diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml new file mode 100644 index 0000000..e6d40c2 --- /dev/null +++ b/.github/workflows/build.yml @@ -0,0 +1,68 @@ +name: build-firmware + +on: + push: + branches: [ "main" ] + pull_request: + branches: [ "main" ] + +env: + TOOLCHAIN: "3.7.0.1796" + DFP: "ATtiny_DFP.2.0.368" + DEVICE: "attiny1606" + + +jobs: + build: + runs-on: ubuntu-latest + + steps: + - uses: actions/checkout@v4 + - name: Install zip + run: sudo apt-get install -y zip + - name: install-build-tools + run: | + wget https://ww1.microchip.com/downloads/aemDocuments/documents/DEV/ProductDocuments/SoftwareTools/avr8-gnu-toolchain-${{ env.TOOLCHAIN }}-linux.any.x86_64.tar.gz + tar -xf *.tar.gz + - name: install-dfp-package + run: | + wget http://packs.download.atmel.com/Atmel.${{ env.DFP }}.atpack + unzip *.atpack -d ./DFP + - name: build-tiny0-firmware + run: | + mkdir build + ./avr8-gnu-toolchain-linux_x86_64/bin/avr-gcc -g -x c -O1 -mmcu=${{ env.DEVICE }} -std=gnu99 -B ./DFP/gcc/dev/${{ env.DEVICE }} -I ./DFP/include -c ./library/system/system.c -o ./system.o + + for dir in ./library/*/ + do + name=${dir%*/} + echo "Building ${name##*/}" + + cp ./system.o ./library/${name##*/}/system.o + + ./avr8-gnu-toolchain-linux_x86_64/bin/avr-gcc -g -x c -O1 -mmcu=${{ env.DEVICE }} -std=gnu99 -B ./DFP/gcc/dev/${{ env.DEVICE }} -I ./DFP/include -c ./library/${name##*/}/main.c -o ./library/${name##*/}/main.o + ./avr8-gnu-toolchain-linux_x86_64/bin/avr-gcc -g -x c -O1 -mmcu=${{ env.DEVICE }} -std=gnu99 -B ./DFP/gcc/dev/${{ env.DEVICE }} -I ./DFP/include -c ./library/${name##*/}/${name##*/}.c -o ./library/${name##*/}/${name##*/}.o + + if [ ${name##*/} = "system" ]; then + ./avr8-gnu-toolchain-linux_x86_64/bin/avr-gcc -g -mmcu=${{ env.DEVICE }} -B ./DFP/gcc/dev/${{ env.DEVICE }} -I ./DFP/include -o ./library/${name##*/}/${name##*/}.elf ./library/${name##*/}/main.o ./library/${name##*/}/${name##*/}.o + else + ./avr8-gnu-toolchain-linux_x86_64/bin/avr-gcc -g -mmcu=${{ env.DEVICE }} -B ./DFP/gcc/dev/${{ env.DEVICE }} -I ./DFP/include -o ./library/${name##*/}/${name##*/}.elf ./library/${name##*/}/main.o ./library/${name##*/}/${name##*/}.o ./library/${name##*/}/system.o + fi + + ./avr8-gnu-toolchain-linux_x86_64/bin/avr-objcopy -j .text -j .data -O ihex ./library/${name##*/}/${name##*/}.elf ./build/${name##*/}_demo.hex + ./avr8-gnu-toolchain-linux_x86_64/bin/avr-objcopy -j .eeprom --change-section-lma .eeprom=0 -O ihex ./library/${name##*/}/${name##*/}.elf ./build/${name##*/}_demo.eep + + done + + tar -czvf build.tar.gz ./build + zip -r build.zip ./build + + - name: upload-tiny0-firmware + uses: actions/upload-artifact@v4 + with: + name: attiny1606-demo + path: | + ./build + build.tar.gz + build.zip + retention-days: 5 \ No newline at end of file diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..6ab5cbd --- /dev/null +++ b/.gitignore @@ -0,0 +1,33 @@ +## Ignore Atmel Studio temporary files and build results +# https://www.microchip.com/mplab/avr-support/atmel-studio-7 + +# Atmel Studio is powered by an older version of Visual Studio, +# so most of the project and solution files are the same as VS files, +# only prefixed by an `at`. + +# Visual Studio 2015/2017 cache/options directory +.vs/ + +#Build Directories +[Dd]ebug/ +[Rr]elease/ + +#Build Results +*.o +*.d +*.eep +*.elf +*.hex +*.map +*.srec + +#User Specific Files +*.atsuo + +# Project files +*.atsln +*.cproj +*.xml + +# Solution files +*.atsln \ No newline at end of file diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..f288702 --- /dev/null +++ b/LICENSE @@ -0,0 +1,674 @@ + GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU General Public License is a free, copyleft license for +software and other kinds of works. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. 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Limitation of Liability. + + IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING +WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS +THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY +GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE +USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF +DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD +PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), +EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF +SUCH DAMAGES. + + 17. Interpretation of Sections 15 and 16. + + If the disclaimer of warranty and limitation of liability provided +above cannot be given local legal effect according to their terms, +reviewing courts shall apply local law that most closely approximates +an absolute waiver of all civil liability in connection with the +Program, unless a warranty or assumption of liability accompanies a +copy of the Program in return for a fee. + + END OF TERMS AND CONDITIONS + + How to Apply These Terms to Your New Programs + + If you develop a new program, and you want it to be of the greatest +possible use to the public, the best way to achieve this is to make it +free software which everyone can redistribute and change under these terms. + + To do so, attach the following notices to the program. It is safest +to attach them to the start of each source file to most effectively +state the exclusion of warranty; and each file should have at least +the "copyright" line and a pointer to where the full notice is found. + + + Copyright (C) + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . + +Also add information on how to contact you by electronic and paper mail. + + If the program does terminal interaction, make it output a short +notice like this when it starts in an interactive mode: + + Copyright (C) + This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, your program's commands +might be different; for a GUI interface, you would use an "about box". + + You should also get your employer (if you work as a programmer) or school, +if any, to sign a "copyright disclaimer" for the program, if necessary. +For more information on this, and how to apply and follow the GNU GPL, see +. + + The GNU General Public License does not permit incorporating your program +into proprietary programs. If your program is a subroutine library, you +may consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. But first, please read +. diff --git a/README.md b/README.md new file mode 100644 index 0000000..2a72711 --- /dev/null +++ b/README.md @@ -0,0 +1,75 @@ +[![Version: 1.0 Release](https://img.shields.io/badge/Version-1.0%20Release-green.svg)](https://github.com/0x007e/tiny0) ![Build](https://github.com/0x007e/tiny0/actions/workflows/build.yml/badge.svg?branch=main) [![License: GPL v3](https://img.shields.io/badge/License-GPL%20v3-blue.svg)](https://www.gnu.org/licenses/gpl-3.0) + +# ATTiny 0/1/2 series peripheral libraries + +This project includes some easy to use libraries. They can be found in the [library](./library/) directory. They are designed for the ATTiny 0/1/2 series for fast initializing `system clock`/`twi`/`uart`/`spi`/`analog` hardware parts of the ATTiny controllers. Every library has a `main.c` where a description how to use the library can be found. + +--- + +# UPDI Programming with `avr-dude` + +## Serial-UPDI Hardware + +For Programming the device with `serialupdi` a `USB/UART` bridge is necessary and a simple adapter pcb. + +[USB/UART Bridge from RS-Components](https://at.rs-online.com/web/p/entwicklungstools-kommunikation-und-drahtlos/7916390?gb=s) + +![UPDI Adapter bottom](./images/UPDI.png) + +| Top | Bottom | +|:---------:|:-------:| +|![UPDI Adapter top](./images/UPDI-Adapter_Top.jpg) | ![UPDI Adapter bottom](./images/UPDI-Adapter_Bottom.jpg) | + +## UPDI programming (over USB/UART) with Microchip Studio + +Download Avr Dude [`avrdude-v?.?-windows-x64.zip`](https://www.microchip.com/mplab/avr-support/atmel-studio-7) and [Microchip Studio 7](https://www.microchip.com/mplab/avr-support/atmel-studio-7) + +Copy avr-dude to a preferred path (e.g. `C:\Tools\avrdude`) and setup external tools in Microchip Studio 7. + +![External Tools in Microchip Studio](./images/microchip-studio-external-tools.png) + +![Setup AVR Dude in Microchip Studio](./images/microchip-studio-avr-dude.png) + +``` bash +# Title +AVR Dude t1606 FLASH +# Command +C:\Tools\avrdude\avrdude.exe +# Arguments !PORT! +-c serialupdi -p t1606 -b 57600 -P COM? -U flash:w:"$(TargetDir)$(TargetName).hex":a -v + +# Arguments +``` + +``` bash +# Title +AVR Dude t1606 FLASH + EEPROM +# Command +C:\Tools\avrdude\avrdude.exe +# Arguments !PORT! +-c serialupdi -p t1606 -b 57600 -P COM? -U flash:w:"$(TargetDir)$(TargetName).hex":a -U eeprom:w:"$(TargetDir)$(TargetName).eep":a -v + +# Arguments +``` + +> Important: It is necessary to setup the right COM-Port! + +![Windows Hardware Manager](./images/win-hardware-manager.png) + +Now projects can be programmed with `avr-dude` and `serialupdi` after the project was built. + +![Windows Hardware Manager](./images/atmelstudio.png) + +--- + +## Software + +Additional software that needs to be installed: + +* [Microchip Studio 7](https://www.microchip.com/mplab/avr-support/atmel-studio-7) +* [TeraTerm](https://teratermproject.github.io/index-en.html) +* [AVRdude](https://github.com/avrdudes/avrdude/releases) + +--- + +**R. GAECHTER** \ No newline at end of file diff --git a/images/UPDI-Adapter_Bottom.jpg b/images/UPDI-Adapter_Bottom.jpg new file mode 100644 index 0000000..1ab90fc Binary files /dev/null and b/images/UPDI-Adapter_Bottom.jpg differ diff --git a/images/UPDI-Adapter_Top.jpg b/images/UPDI-Adapter_Top.jpg new file mode 100644 index 0000000..58b1931 Binary files /dev/null and b/images/UPDI-Adapter_Top.jpg differ diff --git a/images/UPDI.png b/images/UPDI.png new file mode 100644 index 0000000..0810713 Binary files /dev/null and b/images/UPDI.png differ diff --git a/images/UPDI.svg b/images/UPDI.svg new file mode 100644 index 0000000..6c9636a --- /dev/null +++ b/images/UPDI.svg @@ -0,0 +1,3 @@ + + +
USB
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Adapterplatine
Adapterp... \ No newline at end of file diff --git a/images/atmelstudio.png b/images/atmelstudio.png new file mode 100644 index 0000000..d2c364d Binary files /dev/null and b/images/atmelstudio.png differ diff --git a/images/microchip-studio-avr-dude.png b/images/microchip-studio-avr-dude.png new file mode 100644 index 0000000..033d3a7 Binary files /dev/null and b/images/microchip-studio-avr-dude.png differ diff --git a/images/microchip-studio-external-tools.png b/images/microchip-studio-external-tools.png new file mode 100644 index 0000000..b3f7da9 Binary files /dev/null and b/images/microchip-studio-external-tools.png differ diff --git a/images/win-hardware-manager.png b/images/win-hardware-manager.png new file mode 100644 index 0000000..76a14ea Binary files /dev/null and b/images/win-hardware-manager.png differ diff --git a/library/adc/adc.c b/library/adc/adc.c new file mode 100644 index 0000000..9835dae --- /dev/null +++ b/library/adc/adc.c @@ -0,0 +1,72 @@ +/* ----------------------------------------- + * G.Raf^engineering + * www.sunriax.at (github.com/0x007e) + * ----------------------------------------- + * Platform: Independent + * Hardware: ATTiny406/1606/... + * ----------------------------------------- + * Version: 1.0 Release + * Author: G.Raf + * Description: + * Library for initializing A/D converter + * ----------------------------------------- + */ + +#include "adc.h" + +void adc_init(void) +{ + ADC0.CTRLC = (ADC_CAPACITANCE< 10-Bit + // ADC_RESSEL_8BIT_gc -> 8-Bit + #define ADC_RESOLUTION ADC_RESSEL_8BIT_gc + #endif + + #ifndef ADC_CAPACITANCE + // 0 -> Recommended for reference voltage values below 1V + // 1 -> Recommended for higher reference voltages + #define ADC_CAPACITANCE 1 + #endif + + #ifndef ADC_REFERENCE + // ADC_REFSEL_INTREF_gc -> Internal reference + // ADC_REFSEL_VDDREF_gc -> VDD reference + #define ADC_REFERENCE ADC_REFSEL_VDDREF_gc + #endif + + #ifndef ADC_PRESCALER + // !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! + // !!! The prescaler settings should be setup !!! + // !!! to a value that the ADC clock is between !!! + // !!! 50 - 1500 kHz (for fully 10 bit mode) !!! + // !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! + + // +-----------------------------------+ + // | Prescaler | + // +---------------------+-------------+ + // | ADC_PRESC_DIV2_gc | F_PER / 2 | + // | ADC_PRESC_DIV4_gc | F_PER / 4 | + // | ADC_PRESC_DIV8_gc | F_PER / 8 | + // | ADC_PRESC_DIV16_gc | F_PER / 16 | + // | ADC_PRESC_DIV32_gc | F_PER / 32 | + // | ADC_PRESC_DIV64_gc | F_PER / 64 | + // | ADC_PRESC_DIV128_gc | F_PER / 128 | + // | ADC_PRESC_DIV256_gc | F_PER / 256 | + // +---------------------+-------------+ + #define ADC_PRESCALER ADC_PRESC_DIV64_gc + + #endif + + #ifndef ADC_INIT_DELAY + // +-----------------------------+ + // | ADC CLK delay before conv. | + // +-----------------------+-----+ + // | ADC_INITDLY_DLY0_gc | 0 | + // | ADC_INITDLY_DLY16_gc | 16 | + // | ADC_INITDLY_DLY32_gc | 32 | + // | ADC_INITDLY_DLY64_gc | 64 | + // | ADC_INITDLY_DLY128_gc | 128 | + // | ADC_INITDLY_DLY256_gc | 256 | + // +-----------------------+-----+ + #define ADC_INIT_DELAY ADC_INITDLY_DLY0_gc + #endif + + #ifndef ADC_SAMPLE_DELAY_VARIATION + // ADC_ASDV_ASVOFF_gc -> OFF + // ADC_ASDV_ASVON_gc -> ON + #define ADC_SAMPLE_DELAY_VARIATION ADC_ASDV_ASVOFF_gc + #endif + + #ifndef ADC_SAMPLE_DELAY + // Value -> 0 - 15 + #define ADC_SAMPLE_DELAY 8 + #endif + + #ifndef ADC_SAMPLE_LENGTH + // Value -> 0 - 31 + #define ADC_SAMPLE_LENGTH 8 + #endif + + // Definition of ADC processing (Enabled = Interrupt/Disabled = Polling) + + // !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! + // !!! Interrupts are not included in this library !!! + // !!! The interrupt vector should be placed in the !!! + // !!! main.c file !!! + // !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! + + // #ifndef ADC_ADIE + // #define ADC_ADIE + // #endif + + #include + + enum ADC_Accumulation_t + { + ADC_Sample_None=ADC_SAMPNUM_ACC1_gc, + ADC_Sample_2=ADC_SAMPNUM_ACC2_gc, + ADC_Sample_4=ADC_SAMPNUM_ACC4_gc, + ADC_Sample_8=ADC_SAMPNUM_ACC8_gc, + ADC_Sample_16=ADC_SAMPNUM_ACC16_gc, + ADC_Sample_32=ADC_SAMPNUM_ACC32_gc, + ADC_Sample_64=ADC_SAMPNUM_ACC64_gc + }; + typedef enum ADC_Accumulation_t ADC_Accumulation; + + enum ADC_Channel_t + { + ADC_CH0=ADC_MUXPOS_AIN0_gc, + ADC_CH1=ADC_MUXPOS_AIN1_gc, + ADC_CH2=ADC_MUXPOS_AIN2_gc, + ADC_CH3=ADC_MUXPOS_AIN3_gc, + ADC_CH4=ADC_MUXPOS_AIN4_gc, + ADC_CH5=ADC_MUXPOS_AIN5_gc, + ADC_CH6=ADC_MUXPOS_AIN6_gc, + ADC_CH7=ADC_MUXPOS_AIN7_gc, + ADC_CH8=ADC_MUXPOS_AIN8_gc, + ADC_CH9=ADC_MUXPOS_AIN9_gc, + ADC_CH10=ADC_MUXPOS_AIN10_gc, + ADC_CH11=ADC_MUXPOS_AIN11_gc, + ADC_INTREF=ADC_MUXPOS_INTREF_gc, + ADC_GND=ADC_MUXPOS_GND_gc + }; + typedef enum ADC_Channel_t ADC_Channel; + + void adc_init(void); + void adc_channel(ADC_Channel channel); + void adc_accumulation(ADC_Accumulation samples); + void adc_disable(void); + + #ifndef ADC_ADIE + unsigned int adc_read(void); + unsigned int adc_average(unsigned char samples); + #endif + +#endif /* ADC_H_ */ \ No newline at end of file diff --git a/library/adc/main.c b/library/adc/main.c new file mode 100644 index 0000000..48338ed --- /dev/null +++ b/library/adc/main.c @@ -0,0 +1,60 @@ +/* ----------------------------------------- +* G.Raf^engineering +* www.sunriax.at (github.com/0x007e) +* ----------------------------------------- +* Platform: Independent +* Hardware: ATTiny406/1606/... +* ----------------------------------------- +* Version: 1.0 Release +* Author: G.Raf +* Description: +* Sample for initializing A/D converter +* ----------------------------------------- +*/ + +#define F_CPU 20000000UL + +// System libraries +#include +#include + +// User libraries +#include "adc.h" +#include "../system/system.h" + +int main(void) +{ + // Define output port + PORTC.DIRSET = PIN3_bm | PIN2_bm | PIN1_bm | PIN0_bm; + + // Initialize clock system + system_init(); + + // Initialize A/D converter + // Resolution: 10 bit + // Samplerate: 156.25ksps + adc_init(); + + // Select A/D channel 1 (PA1) -> 10k potentiometer + adc_channel(ADC_CH1); + + while (1) + { + // Write converted value to PORTC + // PORT only has 4 Bit so the lower bits are thrown away + PORTC.OUT = (adc_read()>>6); + + // To build an average there are two possible solutions + // Use 10 samples and build an average in software: + PORTC.OUT = (adc_average(10)>>6); + + // Accumulate 8 samples in hardware: + adc_accumulation(ADC_Sample_8); + + PORTC.OUT = (adc_read()>>6); + + adc_accumulation(ADC_Sample_None); + + _delay_ms(100); + } +} \ No newline at end of file diff --git a/library/spi/main.c b/library/spi/main.c new file mode 100644 index 0000000..31a5cc8 --- /dev/null +++ b/library/spi/main.c @@ -0,0 +1,60 @@ +/* ----------------------------------------- +* G.Raf^engineering +* www.sunriax.at (github.com/0x007e) +* ----------------------------------------- +* Platform: Independent +* Hardware: ATTiny406/1606/... +* ----------------------------------------- +* Version: 1.0 Release +* Author: G.Raf +* Description: +* Sample for initializing spi bus +* ----------------------------------------- +*/ + +#define F_CPU 20000000UL + +// System libraries +#include +#include + +// User libraries +#include "spi.h" +#include "../system/system.h" + +int main(void) +{ + // Define input port + PORTB.DIRCLR = PIN3_bm | PIN2_bm | PIN1_bm | PIN0_bm; + PORTB.PIN0CTRL = PORT_PULLUPEN_bm; + PORTB.PIN1CTRL = PORT_PULLUPEN_bm; + PORTB.PIN2CTRL = PORT_PULLUPEN_bm; + PORTB.PIN3CTRL = PORT_PULLUPEN_bm; + + // Define output port + PORTC.DIRSET = PIN3_bm | PIN2_bm | PIN1_bm | PIN0_bm; + + // Initialize clock system + system_init(); + + // SPI Initialization + // Mode: Master + // Direction: MSB + // Transfer: SPI_Rising/SPI_Rising + // + // Details can be found in spi.c + spi_init(SPI_MSB, SPI_Rising, SPI_Rising); + + while (1) + { + // Use a simple loopback mode (connect MOSI to MISO) + // to check the function of the SPI bus. There are 4 Switches + // connected to PORTB (3:0). If one or more switches are + // pressed the status LEDs on PORTC should remain the status + // of the switches. If the connection between MOSI and MISO + // is removed the status LEDs should all be HIGH (active) + // because of the activated pull-up on MISO!!! + PORTC.OUT = spi_transfer(~(0x0F & PORTB.IN)); + _delay_ms(1000); + } +} \ No newline at end of file diff --git a/library/spi/spi.c b/library/spi/spi.c new file mode 100644 index 0000000..ef4a7bb --- /dev/null +++ b/library/spi/spi.c @@ -0,0 +1,89 @@ +/* ----------------------------------------- + * G.Raf^engineering + * www.sunriax.at (github.com/0x007e) + * ----------------------------------------- + * Platform: Independent + * Hardware: ATTiny406/1606/... + * ----------------------------------------- + * Version: 1.0 Release + * Author: G.Raf + * Description: + * Library for initializing spi bus + * ----------------------------------------- + */ + +#include "spi.h" + +void spi_init(SPI_Direction direction, SPI_Polarity setup, SPI_Phase sample) +{ + #ifdef SPI_ALTERNATE_PORT + PORTMUX.CTRLB = PORTMUX_SPI0_ALTERNATE_gc; + #endif + + // !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! + // !!! SPECIAL FUNCTION !!! + // !!! If during initialisation SS !!! + // !!! pin is LOW, SPI controller !!! + // !!! will be configured as slave. !!! + // !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! + PORTA.DIRCLR = SPI_MOSI | SPI_MISO | SPI_SCK | SPI_SS; + PORTA.SPI_MISO_PINCTRL = PORT_PULLUPEN_bm; + PORTA.SPI_SS_PINCTRL = PORT_PULLUPEN_bm; + + SPI0.CTRLA = SPI_MASTER_bm + #ifdef SPI2X + | SPI_CLK2X_bm + #endif + + #ifdef SPI_CLOCK + | SPI_CLOCK + #endif + | ((0x01 & direction)<<6); + + SPI0.CTRLB |= ((0x01 & setup)<<1) | ((0x01 & sample)<<0); + + #ifdef SPI_SPIE + SPI0.INTCTRL |= SPI_IE_bm; + #endif + + SPI0.CTRLA |= SPI_ENABLE_bm; + + // Setup SCK, MOSI and SS as output + // PORT configuration gets overwritten from SPI controller + PORTA.DIR |= SPI_MOSI | SPI_MISO | SPI_SCK | SPI_SS; +} + +#ifndef SPI_SPIE + + void spi_select(SPI_Select mode) + { + switch(mode) + { + case SPI_Enable : PORTA.OUTCLR = SPI_SS; break; + default : PORTA.OUTSET = SPI_SS; break; + } + } + + unsigned char spi_transfer(unsigned char data) + { + SPI0.DATA = data; + + while (!(SPI0.INTFLAGS & SPI_IF_bm)) + { + ; + } + return SPI0.DATA; + } + +#endif + +void spi_disable(void) +{ + // Disable SPI + SPI0.CTRLA &= ~SPI_ENABLE_bm; + PORTA.DIRCLR = PIN4_bm | PIN3_bm | PIN2_bm | PIN1_bm; + + #ifdef SPI_SPIE + SPI0.INTCTRL &= ~SPI_IE_bm; + #endif +} \ No newline at end of file diff --git a/library/spi/spi.h b/library/spi/spi.h new file mode 100644 index 0000000..7066027 --- /dev/null +++ b/library/spi/spi.h @@ -0,0 +1,124 @@ +/* ----------------------------------------- + * G.Raf^engineering + * www.sunriax.at (github.com/0x007e) + * ----------------------------------------- + * Platform: Independent + * Hardware: ATTiny406/1606/... + * ----------------------------------------- + * Version: 1.0 Release + * Author: G.Raf + * Description: + * Header for initializing spi bus + * ----------------------------------------- + */ + +#ifndef SPI_H_ +#define SPI_H_ + + // !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! + // !!! When device is configured as !!! + // !!! slave the system clock has to !!! + // !!! be 4 times higher then the !!! + // !!! SPI clock f_CPU > 4 * f_SPI !!! + // !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! + + //#ifndef SPI2X // Double speed mode + //#define SPI2X + //#endif + + #ifndef SPI_CLOCK + // +------------------------------+-------+------+ + // | SPI2X | 0 | 1 | + // +------------------------------+-------+------+ + // | SPI_PRESC_DIV4_gc -> F_PER | / 4 | / 2 | + // | SPI_PRESC_DIV16_gc -> F_PER | / 16 | / 8 | + // | SPI_PRESC_DIV64_gc -> F_PER | / 64 | / 32 | + // | SPI_PRESC_DIV128_gc -> F_PER | / 128 | / 64 | + // +------------------------------+-------+------+ + #define SPI_CLOCK SPI_PRESC_DIV4_gc + + #endif + + //#ifndef SPI_ALTERNATE_PORT + //#define SPI_ALTERNATE_PORT + //#endif + + // !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! + // !!! When using the alternate port !!! + // !!! pins have to be modified! !!! + // !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! + #ifndef SPI_PORT + #define SPI_PORT PORTA + #endif + + #ifndef SPI_MOSI + #define SPI_MOSI PIN1_bm + #endif + + #ifndef SPI_MISO + #define SPI_MISO PIN2_bm + #define SPI_MISO_PINCTRL PIN2CTRL + #endif + + #ifndef SPI_SCK + #define SPI_SCK PIN3_bm + #endif + + #ifndef SPI_SS + #define SPI_SS PIN4_bm + #define SPI_SS_PINCTRL PIN4CTRL + #endif + + // Definition of SPI processing (Enabled = Interrupt/Disabled = Polling) + + // !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! + // !!! Interrupts are not included in this library !!! + // !!! If interrupts are used, disable the polling !!! + // !!! by uncommenting the next lines !!! + // !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! + + //#ifndef SPI_SPIE // SPI Interrupt based processing + // #define SPI_SPIE + //#endif + + #include + + enum SPI_Direction_t + { + SPI_MSB=0, + SPI_LSB + }; + typedef enum SPI_Direction_t SPI_Direction; + + enum SPI_Edge_t + { + SPI_Rising=0, + SPI_Falling + }; + typedef enum SPI_Edge_t SPI_Polarity; + typedef enum SPI_Edge_t SPI_Phase; + + enum SPI_Select_t + { + SPI_Disable=0, + SPI_Enable + }; + typedef enum SPI_Select_t SPI_Select; + + enum SPI_Status_t + { + SPI_Received=0, + SPI_Collision, + SPI_None + }; + typedef enum SPI_Status_t SPI_Status; + + void spi_init(SPI_Direction direction, SPI_Polarity setup, SPI_Phase sample); + void spi_disable(void); + void spi_select(SPI_Select mode); + + #ifndef SPI_SPIE + unsigned char spi_transfer(unsigned char data); + #endif + +#endif /* SPI_H_ */ \ No newline at end of file diff --git a/library/system/main.c b/library/system/main.c new file mode 100644 index 0000000..605bcbc --- /dev/null +++ b/library/system/main.c @@ -0,0 +1,37 @@ +/* ----------------------------------------- + * G.Raf^engineering + * www.sunriax.at (github.com/0x007e) + * ----------------------------------------- + * Platform: Independent + * Hardware: ATTiny406/1606/... + * ----------------------------------------- + * Version: 1.0 Release + * Author: G.Raf + * Description: + * Sample for initializing system clock + * ----------------------------------------- + */ + +#define F_CPU 20000000UL + +// System libraries +#include +#include + +// User libraries +#include "system.h" + +int main(void) +{ + // Define signal port + PORTA.DIR = PIN1_bm; + + // Initialize clock system + system_init(); + + while (1) + { + PORTA.OUTTGL = PIN1_bm; + _delay_ms(1000); + } +} \ No newline at end of file diff --git a/library/system/system.c b/library/system/system.c new file mode 100644 index 0000000..88491e7 --- /dev/null +++ b/library/system/system.c @@ -0,0 +1,35 @@ +/* ----------------------------------------- + * G.Raf^engineering + * www.sunriax.at (github.com/0x007e) + * ----------------------------------------- + * Platform: Independent + * Hardware: ATTiny406/1606/... + * ----------------------------------------- + * Version: 1.0 Release + * Author: G.Raf + * Description: + * Library for initializing system clock + * ----------------------------------------- + */ + +#include "system.h" + +void system_init(void) +{ + CCP = CCP_IOREG_gc; + CLKCTRL.MCLKCTRLA = SYSTEM_CLOCK; + while(!(CLKCTRL.MCLKSTATUS & SYSTEM_CLOCK_BIT)) + { + ; + } + + #ifdef SYSTEM_PER_CLOCK_PRESCALER + CCP = CCP_IOREG_gc; + CLKCTRL.MCLKCTRLB = SYSTEM_PER_CLOCK_PRESCALER | CLKCTRL_PEN_bm; + #endif + + #if SYSTEM_CLOCK == CLKCTRL_CLKSEL_OSC20M_gc + CCP = CCP_IOREG_gc; + CLKCTRL.OSC20MCTRLA = CLKCTRL_RUNSTDBY_bm; + #endif +} \ No newline at end of file diff --git a/library/system/system.h b/library/system/system.h new file mode 100644 index 0000000..133a602 --- /dev/null +++ b/library/system/system.h @@ -0,0 +1,53 @@ +/* ----------------------------------------- + * G.Raf^engineering + * www.sunriax.at (github.com/0x007e) + * ----------------------------------------- + * Platform: Independent + * Hardware: ATTiny406/1606/... + * ----------------------------------------- + * Version: 1.0 Release + * Author: G.Raf + * Description: + * Header for initializing system clock + * ----------------------------------------- + */ + +#ifndef SYSTEM_H_ +#define SYSTEM_H_ + + #ifndef SYSTEM_CLOCK + // +-----------------------------+--------------------+------+--------+ + // | SYSTEM_CLOCK | SYSTEM_CLOCK_BIT | Type | Freq. | + // +-----------------------------+--------------------+------+--------+ + // | CLKCTRL_CLKSEL_OSC20M_gc | CLKCTRL_OSC20MS_bm | Int. | 20 MHz | + // | CLKCTRL_CLKSEL_OSCULP32K_gc | CLKCTRL_OSC32KS_bm | Int. | 32 kHz | + // | CLKCTRL_CLKSEL_EXTCLK_gc | CLKCTRL_EXTS_bm |Ext. | ?? | + // +-----------------------------+--------------------+------+--------+ + #define SYSTEM_CLOCK CLKCTRL_CLKSEL_OSC20M_gc + #define SYSTEM_CLOCK_BIT CLKCTRL_OSC20MS_bm + #endif + + #ifndef SYSTEM_PER_CLOCK_PRESCALER + // +------------------------------+------+ + // | Possible definitions | | + // +------------------------------+------+ + // | // undefine -> F_CPU | / 1 | + // | CLKCTRL_PDIV_2X_gc -> F_CPU | / 2 | + // | CLKCTRL_PDIV_4X_gc -> F_CPU | / 4 | + // | CLKCTRL_PDIV_8X_gc -> F_CPU | / 8 | + // | CLKCTRL_PDIV_16X_gc -> F_CPU | / 16 | + // | CLKCTRL_PDIV_32X_gc -> F_CPU | / 32 | + // | CLKCTRL_PDIV_64X_gc -> F_CPU | / 64 | + // | CLKCTRL_PDIV_6X_gc -> F_CPU | / 6 | + // | CLKCTRL_PDIV_10X_gc -> F_CPU | / 10 | + // | CLKCTRL_PDIV_24X_gc -> F_CPU | / 24 | + // | CLKCTRL_PDIV_48X_gc -> F_CPU | / 48 | + // +------------------------------+------+ + #define SYSTEM_PER_CLOCK_PRESCALER CLKCTRL_PDIV_2X_gc + #endif + + #include + + void system_init(void); + +#endif /* SYSTEM_H_ */ \ No newline at end of file diff --git a/library/twi/main.c b/library/twi/main.c new file mode 100644 index 0000000..2f20363 --- /dev/null +++ b/library/twi/main.c @@ -0,0 +1,108 @@ +/* ----------------------------------------- +* G.Raf^engineering +* www.sunriax.at (github.com/0x007e) +* ----------------------------------------- +* Platform: Independent +* Hardware: ATTiny406/1606/... +* ----------------------------------------- +* Version: 1.0 Release +* Author: G.Raf +* Description: +* Sample for initializing twi bus +* ----------------------------------------- +*/ + +// !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! +// Hardware setup +// +// +-----+ +// | P | +// +-----------+ D +-------+ AT24C02 +// | A | I | | +-----------+ +// | T +-----+ +---+ +> VCC ---- VCC <+ | E | +// | I | P | | | | E | +// | N | O |+++ +++| P | +// | Y | R || | 10k 10k | || R | +// | * | T || | | || O | +// | 0 | B |+++ +++| M | +// | 6 | | | | | | +// | | | |-> PB1 -- SDA <-+ | | +// | | | +-> PB0 -- SCL <-- | | +// | +---+ -> GND -- GND <- | | +// +~~~~~~~~~~~~~~~~~~~~~~~~~+ +-----------+ +// +// !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! + +#define F_CPU 20000000UL + +// EEPROM settings +#define SLAVE_ADDR 0x42 // TWI_Slave address of the EEPROM +#define EEPROM_ADDR 0xF0 // EEPROM memory address +#define EEPROM_DATA 0xF0 // EEPROM test data + +// System libraries +#include +#include + +// User libraries +#include "twi.h" +#include "../system/system.h" + +int main(void) +{ + // Define input port + PORTB.DIRCLR = PIN1_bm | PIN0_bm; + + // Enable pull-up on SCL and SDA if no external pull-ups are present. + // !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! + // !!! INFORMATION !!! + // !!! If the pullup resistor on !!! + // !!! SCL/SDA has a very high !!! + // !!! resistance, it could be !!! + // !!! necessary to slow down the !!! + // !!! TWI clock speed or manually !!! + // !!! mount 10k resistors between !!! + // !!! SCL -> VCC and SDA -> VCC !!! + // !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! + //PORTB.PIN0CTRL = PORT_PULLUPEN_bm; + //PORTB.PIN1CTRL = PORT_PULLUPEN_bm; + + // Define output port + PORTC.DIRSET = PIN0_bm; + + // Initialize clock system + system_init(); + + // Initialize TWI + // Mode: Master + // Speed: 100kHz + // + // Details can be found in twi.c + twi_init(); + + // EEPROM WRITE routine + twi_start(); + twi_address(SLAVE_ADDR, TWI_Write); + twi_set(EEPROM_ADDR); + twi_set(EEPROM_DATA); + twi_stop(); + _delay_ms(5); + + while(1) + { + unsigned char data; + + // EEPROM READ routine + twi_start(); + twi_address(SLAVE_ADDR, TWI_Write); + twi_set(EEPROM_ADDR); + twi_start(); + twi_address(SLAVE_ADDR, TWI_Read); + twi_get(&data, TWI_NACK); + twi_stop(); + + // Check if data written to EEPROM is same as data that was received + if(EEPROM_DATA == data) + PORTC.OUTSET = PIN0_bm; + } +} \ No newline at end of file diff --git a/library/twi/twi.c b/library/twi/twi.c new file mode 100644 index 0000000..a55bdac --- /dev/null +++ b/library/twi/twi.c @@ -0,0 +1,126 @@ +/* ----------------------------------------- + * G.Raf^engineering + * www.sunriax.at (github.com/0x007e) + * ----------------------------------------- + * Platform: Independent + * Hardware: ATTiny406/1606/... + * ----------------------------------------- + * Version: 1.0 Release + * Author: G.Raf + * Description: + * Library for initializing twi bus + * ----------------------------------------- + */ + +#include "twi.h" + +void twi_init(void) +{ + TWI0.MBAUD = (unsigned char)TWI_BAUD_RATE(F_TWI); + TWI0.MCTRLA = (1<>1)) + #endif + + #ifndef TWI_PRESCALE // TWI TWSR register prescaler (0-3) + #define TWI_PRESCALE 0 + #endif + + #ifndef TWI_WRITE // TWI write command + #define TWI_WRITE 0x00 + #endif + + #ifndef TWI_READ // TWI read command + #define TWI_READ 0x01 + #endif + + // Definition of TWI processing (Enabled = Interrupt/Disabled = Polling) + + // !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! + // !!! Interrupts are not included in this library !!! + // !!! If interrupts are used, polling will be !!! + // !!! disabled !!! + // !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! + + //#ifndef TWI_TWIE // TWI Interrupt based processing + // #define TWI_TWIE + //#endif + + #include + + enum TWI_Operation_t + { + TWI_Write=TWI_WRITE, + TWI_Read=TWI_READ + }; + typedef enum TWI_Operation_t TWI_Operation; + + enum TWI_Acknowledge_t + { + TWI_NACK=0, + TWI_ACK + }; + typedef enum TWI_Acknowledge_t TWI_Acknowledge; + + enum TWI_Status_t + { + TWI_None=0, + TWI_NAck, + TWI_Ready, + TWI_Arbitration, + TWI_Error + }; + typedef enum TWI_Status_t TWI_Status; + + void twi_init(void); + void twi_disable(void); + TWI_Status twi_status(void); + + #ifndef TWI_TWIE + void twi_start(void); + void twi_stop(void); + TWI_Status twi_address(unsigned char address, TWI_Operation operation); + TWI_Status twi_set(unsigned char data); + TWI_Status twi_get(unsigned char *data, TWI_Acknowledge ack); + #endif + + +#endif /* TWI_H_ */ \ No newline at end of file diff --git a/library/uart/main.c b/library/uart/main.c new file mode 100644 index 0000000..3bfd0ba --- /dev/null +++ b/library/uart/main.c @@ -0,0 +1,132 @@ + +/* ----------------------------------------- +* G.Raf^engineering +* www.sunriax.at (github.com/0x007e) +* ----------------------------------------- +* Platform: Independent +* Hardware: ATTiny406/1606/... +* ----------------------------------------- +* Version: 1.0 Release +* Author: G.Raf +* Description: +* Sample for initializing uart +* ----------------------------------------- +*/ + +#define F_CPU 20000000UL + +// System libraries +#include +#include +#include + +// User libraries +#include "uart.h" +#include "../system/system.h" + +// Static test variables for printf +static unsigned int x = 123; // Numeric +static unsigned char a = 'A'; // Character +static unsigned char str[] = "Test"; // String +static double z = 123.43; // Floating Point + +int main(void) +{ + // Initialize UART + // Baud: 9600 + // Parity: None + // Stopbit(s): 1 + uart_init(); + + // Put a single char without printf + uart_putchar('0'); + uart_putchar('x'); + uart_putchar('0'); + uart_putchar('0'); + uart_putchar('7'); + uart_putchar('E'); + uart_putchar('\n'); + uart_putchar('\r'); + + // Print a String + printf("Hello, world!\n\r"); + + // Print different variables + printf("Variables -> %d, %c, %s\n\r", x, a, str); + + // Linker parameter necessary: + // -> Libraries: libprintf_flt + // -> General: Use vprintf + // -> Miscellaneous: -Wl,-u,vfprintf -lprintf_flt -lm + printf("Variable y: %f\n\n\r", z); + + while (1) + { + // Scan for a char blocking + UART_Data status; + uart_putchar(uart_getchar(&status)); + + // Scan for a char non-blocking + printf("\n\rPress a key to abort: "); + + for (unsigned char i=0; i < 50; i++) + { + uart_putchar('+'); + + char temp; + + if(uart_scanchar(&temp) == UART_Received) + { + break; + } + } + uart_putchar('\n'); + uart_putchar('\r'); + + // Make a request from console + printf("Please enter a number: "); + unsigned int zahl1; + + if(scanf("%3u", &zahl1) == 1) + { + printf("\n\n\rThe result of %u * 5 equals: %u\n\n\r", zahl1, (zahl1 * 5)); + } + else + { + uart_clear(); + printf("\n\rInput error!\n\n\r"); + } + + printf("Please insert 10 characters: "); + char test[11]; + + if(scanf("%10s", test) != 0) + { + printf("\n\n\rInput result: %s\n\n\r", test); + } + else + { + uart_clear(); + printf("\n\rInput error!\n\n\r"); + } + + printf("Please enter a decimal number: "); + float zahl2; + + // Linker parameter necessary: + // -> Libraries: libscanf_flt + // -> General: Use vprintf + // -> Miscellaneous: -Wl,-u,vfscanf -lscanf_flt -lm + if(scanf("%f", &zahl2) == 1) + { + printf("\n\n\rThe result of %f * 5.23 equals: %f\n\n\r", zahl2, (zahl2 * 5.23)); + } + else + { + uart_clear(); + printf("\n\rInput error!\n\n\r"); + } + + _delay_ms(1000); + } +} \ No newline at end of file diff --git a/library/uart/uart.c b/library/uart/uart.c new file mode 100644 index 0000000..6206149 --- /dev/null +++ b/library/uart/uart.c @@ -0,0 +1,252 @@ +/* ----------------------------------------- + * G.Raf^engineering + * www.sunriax.at (github.com/0x007e) + * ----------------------------------------- + * Platform: Independent + * Hardware: ATTiny406/1606/... + * ----------------------------------------- + * Version: 1.0 Release + * Author: G.Raf + * Description: + * Library for initializing uart + * ----------------------------------------- + */ + +#include "uart.h" + +#if UART_STDMODE > 0 + // Initialize FILE stream + #if !defined(UART_TXCIE) && !defined(UART_UDRIE) && !defined(UART_RXCIE) && UART_STDMODE == 1 + static FILE std_uart = FDEV_SETUP_STREAM(uart_printf, uart_scanf, _FDEV_SETUP_RW); + #elif !defined(UART_TXCIE) && !defined(UART_UDRIE) && UART_STDMODE == 2 + static FILE std_uart = FDEV_SETUP_STREAM(uart_printf, NULL, _FDEV_SETUP_WRITE); + #elif !defined(UART_RXCIE) && UART_STDMODE == 3 + static FILE std_uart = FDEV_SETUP_STREAM(NULL, uart_scanf, _FDEV_SETUP_READ); + #endif +#endif + +#if !defined(UART_RXCIE) && !defined(UART_TXCIE) && !defined(UART_UDRIE) + #if UART_HANDSHAKE > 0 + static UART_Handshake uart_handshake_sending = UART_Ready; + #endif +#endif + +void uart_init(void) +{ + // UART PORT settings + #ifdef UART_ALTERNATE_PORT + PORTMUX.CTRLB = PORTMUX_USART0_ALTERNATE_gc; + #endif + + UART_PORT.DIRSET = UART_TX_PIN; + UART_PORT.DIRCLR = UART_RX_PIN; + + // Check if hardware flow control is enabled + #if UART_HANDSHAKE == 2 + // Setup RTS (output)/CTS (input) + UART_HANDSHAKE_PORT.DIRSET = UART_HANDSHAKE_RTS; + UART_HANDSHAKE_PORT.DIRCLR = UART_HANDSHAKE_CTS; + #endif + + // Check which bit sampling mode should be activated + #if UART_SAMPLE == 1 + USART0.CTRLB |= (UART_SAMPLE<<1); // Setup 8 samples/bit + #else + USART0.CTRLB &= ~(UART_SAMPLE<<1); // Setup 16 samples/bit + #endif + + USART0.BAUD = (unsigned int)UART_BAUD_RATE(BAUDRATE); + USART0.CTRLC = (0x03 & (UART_DATASIZE - 5)); // Setup data size + + #if UART_PARITY > 0 + USART0.CTRLC |= (0x30 & ((UART_PARITY + 1)<<4)); // UART_Parity Mode + #endif + + #if UART_STOPBITS > 1 + USART0.CTRLC |= (0x08 & (UART_STOPBITS<<3)); // Setup stop bits + #endif + + // Interrupt control + USART0.CTRLA = 0x00; + + // Enable transmitter/receiver + USART0.CTRLB |= USART_TXEN_bm | USART_RXEN_bm; + + // Receiver interrupt setup + #ifdef UART_RXCIE + USART0.CTRLA |= USART_RXCIE_bm; + #endif + + // Transmitter interrupt setup + #if defined(UART_TXCIE) && !defined(UART_UDRIE) + USART0.CTRLA |= USART_TXCIE_bm; + #endif + + // Transmitter interrupt setup + #if !defined(UART_TXCIE) && defined(UART_UDRIE) + USART0.CTRLA |= USART_DREIE_bm; + #endif + + #if !defined(UART_TXCIE) && !defined(UART_UDRIE) && (UART_STDMODE == 1 || UART_STDMODE == 2) + stdout = &std_uart; + #endif + + #if !defined(UART_RXCIE) && UART_STDMODE == 1 || UART_STDMODE == 3 + stdin = &std_uart; + #endif +} + +void uart_disable(void) +{ + USART0.CTRLB &= ~(USART_TXEN_bm | USART_RXEN_bm); + USART0.CTRLA &= ~(USART_RXCIE_bm | USART_TXCIE_bm | USART_DREIE_bm); +} + +#if !defined(UART_TXCIE) && !defined(UART_UDRIE) + char uart_putchar(char data) + { + // Wait until last transmission completed + while (!(USART0.STATUS & USART_DREIF_bm)) + { + ; + } + USART0.TXDATAL = data; // Write data to transmission register + + return 0; // Return that there was no fault + } + + #if (UART_STDMODE == 1 || UART_STDMODE == 2) + int uart_printf(char data, FILE *stream) + { + return uart_putchar(data); + } + #endif + +#endif + +#if !defined(UART_RXCIE) + UART_Data uart_scanchar(char *data) + { + // If data has been received + if(USART0.STATUS & USART_RXCIF_bm) + { + // Check if an error during receiving data occurred + if(uart_error_flags() != UART_None) + { + *data = 0; + return UART_Fault; + } + + #if UART_HANDSHAKE == 1 + if (*data == UART_HANDSHAKE_XON) + { + uart_handshake_sending = UART_Ready; + return UART_Empty; + } + else if (*data == UART_HANDSHAKE_XOFF) + { + uart_handshake_sending = UART_Pause; + return UART_Empty; + } + #endif + + *data = USART0.RXDATAL; + + #if defined(UART_RXC_ECHO) && !defined(UART_TXCIE) && !defined(UART_UDRIE) + // Send echo of received data to UART + uart_putchar(*data); + #endif + + return UART_Received; + } + return UART_Empty; + } + + char uart_getchar(UART_Data *status) + { + char data; + + // Wait until data has been received or an error occurred + do + { + *status = uart_scanchar(&data); + } while (*status == UART_Empty); + + return data; + } + + #if (UART_STDMODE == 1 || UART_STDMODE == 3) + int uart_scanf(FILE *stream) + { + UART_Data temp; + + return (int)uart_getchar(&temp); + } + + void uart_clear(void) + { + clearerr(stdin); // Clear error on stream + getchar(); // Remove character from stream + } + + UART_Error uart_error_flags(void) + { + // UART_Frame error + if(USART0.RXDATAH & USART_FERR_bm) + { + USART0.RXDATAL; // Clear UART data register + return UART_Frame; // Return NUL + } + // Data UART_Buffer overflow error + else if(USART0.RXDATAH & USART_BUFOVF_bm) + { + USART0.RXDATAL; // Clear UART data register + return UART_Overrun; // Return NUL + } + // UART_Parity error + else if(USART0.RXDATAH & USART_PERR_bm) + { + USART0.RXDATAL; // Clear UART data register + return UART_Parity; // Return NUL + } + return UART_None; + } + #endif +#endif + +#if !defined(UART_RXCIE) && !defined(UART_TXCIE) && !defined(UART_UDRIE) + #if UART_HANDSHAKE > 0 + UART_Handshake uart_handshake(UART_Handshake status) + { + if(status == UART_Ready) + { + #if UART_HANDSHAKE == 1 + uart_putchar(UART_HANDSHAKE_XON); + #elif UART_HANDSHAKE == 2 + UART_HANDSHAKE_PORT &= ~(1< + #include + + void uart_init(void); + void uart_disable(void); + + #if !defined(UART_TXCIE) && !defined(UART_UDRIE) + char uart_putchar(char data); + + #if UART_STDMODE == 1 || UART_STDMODE == 2 + int uart_printf(char data, FILE *stream); + #endif + #endif + + #if !defined(UART_RXCIE) + char uart_getchar(UART_Data *status); + UART_Data uart_scanchar(char *data); + UART_Error uart_error_flags(void); + + #if UART_STDMODE == 1 || UART_STDMODE == 3 + int uart_scanf(FILE *stream); + void uart_clear(void); + #endif + #endif + + #if !defined(UART_TXCIE) && !defined(UART_UDRIE) && !defined(UART_RXCIE) + #if UART_HANDSHAKE > 0 + UART_Handshake uart_handshake(UART_Handshake status); + #endif + #endif + +#endif /* UART_H_ */ \ No newline at end of file