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multipointcom.cpp
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multipointcom.cpp
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/*
* Water Tower Monitor
*
* Copyright (c) 2015, longfeng.xiao <[email protected]>
*
* 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 2 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, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#include <cmsis_os.h> // CMSIS RTOS header file
#include <stdio.h>
#include "stm32f10x_gpio.h"
#include "si4432.h"
#include "common.h"
// #define DISTANCE_TEST
#define DEBUG
/* Protocol data frame format
* | Addr[1] | Protocol Field[1] | Data Field[n] | CRC[1] |
* Len: data frame length, must be less than or equal 64 bytes.
*/
static const uint8_t MultiPointComMaximumQuantity = 16;
static const uint8_t MultiPointComIdentityBase = 0x10;
static uint8_t multiPointComIdentity = MultiPointComIdentityBase;
static Si4432 *radio;
static bool radioInitialize = false;
static uint8_t sampleInterval = 10;
static uint32_t connectedTick;
static uint32_t disconnectCount = 1;
static byte response[64];
static byte request[64];
void multiPointCom (void const *argument); // thread function
osThreadId tidMultiPointCom; // thread id
osThreadDef (multiPointCom, osPriorityNormal, 1, 0); // thread object
static void sendResponse(int id)
{
uint32_t sample = getUltrasonicRangingSample(id & 0x01);
response[0] = id;
response[1] = 0;
response[2] = (sample >> 0) & 0xFF;
response[3] = (sample >> 8) & 0xFF;
response[4] = (sample >> 16) & 0xFF;
response[5] = (sample >> 24) & 0xFF;
radio->sendPacket(6, response);
}
void setMultiPointComIdentity(uint8_t id)
{
if (id > MultiPointComMaximumQuantity)
printf("Set watertower identity %d error!\n", id);
multiPointComIdentity = MultiPointComIdentityBase + id;
printf("Multi point com identity 0x%02x\n", multiPointComIdentity);
}
uint8_t readChipAddress(void)
{
GPIO_InitTypeDef gpioInitStructure;
gpioInitStructure.GPIO_Pin = GPIO_Pin_0;
gpioInitStructure.GPIO_Speed = GPIO_Speed_2MHz;
gpioInitStructure.GPIO_Mode = GPIO_Mode_IPU;
GPIO_Init(GPIOC, &gpioInitStructure);
gpioInitStructure.GPIO_Pin = GPIO_Pin_1;
gpioInitStructure.GPIO_Speed = GPIO_Speed_2MHz;
gpioInitStructure.GPIO_Mode = GPIO_Mode_IPU;
GPIO_Init(GPIOC, &gpioInitStructure);
gpioInitStructure.GPIO_Pin = GPIO_Pin_2;
gpioInitStructure.GPIO_Speed = GPIO_Speed_2MHz;
gpioInitStructure.GPIO_Mode = GPIO_Mode_IPU;
GPIO_Init(GPIOC, &gpioInitStructure);
gpioInitStructure.GPIO_Pin = GPIO_Pin_3;
gpioInitStructure.GPIO_Speed = GPIO_Speed_2MHz;
gpioInitStructure.GPIO_Mode = GPIO_Mode_IPU;
GPIO_Init(GPIOC, &gpioInitStructure);
return (GPIO_ReadInputData(GPIOC) & 0x0f) << 1;
}
int multiPointComInit(void)
{
tidMultiPointCom = osThreadCreate (osThread(multiPointCom), NULL);
if(!tidMultiPointCom) return(-1);
radio = new Si4432();
return(0);
}
void multiPointCom (void const *argument)
{
bool pkg;
setUltrasonicRangingSampleInterval(sampleInterval);
setMultiPointComIdentity(readChipAddress());
radio->init();
#ifdef DISTANCE_TEST
if (!radioInitialize) {
printf("Radio initializing ...\n");
radioInitialize = true;
radio->hardReset();
radio->startListening();
connectedTick = osKernelSysTick();
setBlinkyMode(0);
}
if (multiPointComIdentity == MultiPointComIdentityBase) {
/* Host */
printf("I'm the host device\n");
while (1) {
byte resLen = 0;
int i;
pkg = radio->sendPacket(32, request, true, 100, &resLen, response);
if (pkg) {
printf("RSSI %d\n", radioReadReg(0x26));
printf("Response packet received <%d>: ", resLen);
for (i = 0; i < resLen; i++) {
printf("%x ", response[i]);
}
printf("\n");
}
osDelay(1000);
}
} else {
/* Slave */
printf("I'm the slave device\n");
while (1) {
pkg = radio->isPacketReceived();
if (pkg) {
byte len = 0;
int id;
uint8_t protocol;
radio->getPacketReceived(&len, request);
printf("RSSI %d\n", radioReadReg(0x26));
{
int i;
printf("Packet received <%d>: ", len);
for (i = 0; i < len; i++) {
printf("%x ", request[i]);
}
printf("\n");
}
radio->sendPacket(6, request);
radio->startListening();
connectedTick = osKernelSysTick();
setBlinkyMode(1);
} else {
if (osKernelSysTick() - connectedTick > osKernelSysTickMicroSec((3 * 1000) * 1000)) {
printf("Radio %d disconnected more than 3 second\n", disconnectCount++);
connectedTick = osKernelSysTick();
setBlinkyMode(0);
}
osThreadYield();
}
}
}
#else
while (1) {
if (!radioInitialize) {
printf("Radio initializing ...\n");
radioInitialize = true;
radio->hardReset();
radio->startListening();
connectedTick = osKernelSysTick();
setBlinkyMode(0);
}
pkg = radio->isPacketReceived();
if (pkg) {
byte len = 0;
int id;
uint8_t protocol;
radio->getPacketReceived(&len, request);
#ifdef DEBUG
if (0) {
int i;
printf("Packet received <%d>: ", len);
for (i = 0; i < len; i++) {
printf("%x ", request[i]);
}
printf("\n");
}
#endif
id = request[0];
if ((id & ~0x01) != multiPointComIdentity) {
radio->startListening();
continue;
}
#ifdef DEBUG
printf("%d: RSSI %d\n", id, radioReadReg(0x26));
#endif
switch (len) {
case 3:
protocol = request[1]; /* alway zero */
sampleInterval = request[2];
setUltrasonicRangingSampleInterval(sampleInterval);
break;
default:
continue;
}
sendResponse(id);
radio->startListening();
connectedTick = osKernelSysTick();
setBlinkyMode(1);
} else {
if (osKernelSysTick() - connectedTick > osKernelSysTickMicroSec((sampleInterval * 5 * 1000) * 1000)) {
printf("Radio %d disconnected more than %d second\n", disconnectCount++, sampleInterval * 5);
sampleInterval = 10;
connectedTick = osKernelSysTick();
setBlinkyMode(0);
radioInitialize = false;
}
osThreadYield();
}
}
#endif
}
void radioReset(void)
{
radioInitialize = false;
}
void radioDumpReg(void)
{
radio->readAll();
}
uint8_t radioReadReg(uint8_t reg)
{
return radio->readReg(reg);
}
void radioWriteReg(uint8_t reg, uint8_t value)
{
radio->writeReg(reg, value);
}