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/*
* The MIT License (MIT)
*
* Copyright (c) 2015 Matthias P. Braendli
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <math.h>
#include "stm32f4xx_conf.h"
#include "audio.h"
/* Kernel includes. */
#include "FreeRTOS.h"
#include "task.h"
#include "timers.h"
#include "semphr.h"
#include "cw.h"
#include "pio.h"
#include "i2c.h"
#include "gps.h"
#include "fsm.h"
#include "common.h"
#define GPIOD_BOARD_LED_GREEN GPIO_Pin_12
#define GPIOD_BOARD_LED_ORANGE GPIO_Pin_13
#define GPIOD_BOARD_LED_RED GPIO_Pin_14
#define GPIOD_BOARD_LED_BLUE GPIO_Pin_15
// Private variables
static int tm_trigger = 0;
// Private function prototypes
void init();
// Tasks
static void detect_button_press(void *pvParameters);
static void exercise_fsm(void *pvParameters);
static void gps_monit_task(void *pvParameters);
static void launcher_task(void *pvParameters);
// Audio callback function
static void audio_callback(void* context, int select_buffer);
void vApplicationStackOverflowHook( TaskHandle_t xTask,
signed char *pcTaskName )
{
while (1) {};
}
int main(void) {
init();
TaskHandle_t task_handle;
xTaskCreate(
launcher_task,
"TaskLauncher",
configMINIMAL_STACK_SIZE,
(void*) NULL,
tskIDLE_PRIORITY + 2UL,
&task_handle);
if (!task_handle) {
trigger_fault(FAULT_SOURCE_MAIN);
}
/* Start the RTOS Scheduler */
vTaskStartScheduler();
/* HALT */
while(1);
}
// Launcher task is here to make sure the scheduler is
// already running when calling the init functions.
static void launcher_task(void *pvParameters)
{
cw_psk31_init(16000);
pio_init();
i2c_init();
common_init();
gps_init();
TaskHandle_t task_handle;
xTaskCreate(
detect_button_press,
"TaskButton",
4*configMINIMAL_STACK_SIZE,
(void*) NULL,
tskIDLE_PRIORITY + 2UL,
&task_handle);
if (!task_handle) {
trigger_fault(FAULT_SOURCE_MAIN);
}
xTaskCreate(
exercise_fsm,
"TaskFSM",
4*configMINIMAL_STACK_SIZE,
(void*) NULL,
tskIDLE_PRIORITY + 2UL,
&task_handle);
if (!task_handle) {
trigger_fault(FAULT_SOURCE_MAIN);
}
xTaskCreate(
gps_monit_task,
"TaskGPSMonit",
4*configMINIMAL_STACK_SIZE,
(void*) NULL,
tskIDLE_PRIORITY + 2UL,
&task_handle);
if (!task_handle) {
trigger_fault(FAULT_SOURCE_MAIN);
}
InitializeAudio(Audio16000HzSettings);
SetAudioVolume(210);
PlayAudioWithCallback(audio_callback, NULL);
/* We are done now, suspend this task
* With FreeDOS' heap_1.c, we cannot delete it.
* See freertos.org -> More Advanced... -> Memory Management
* for more info.
*/
while (1) {
vTaskSuspend(NULL);
}
}
static void detect_button_press(void *pvParameters)
{
int pin_high_count = 0;
const int pin_high_thresh = 10;
while (1) {
if (GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_0) == Bit_SET) {
if (pin_high_count < pin_high_thresh) {
pin_high_count++;
}
}
else {
if (pin_high_count > 0) {
pin_high_count--;
}
}
vTaskDelay(10 / portTICK_RATE_MS); /* Debounce Delay */
if (pin_high_count == pin_high_thresh) {
tm_trigger = 1;
}
else if (pin_high_count == 0) {
tm_trigger = 0;
}
}
}
static void audio_callback(void* context, int select_buffer)
{
static int16_t audio_buffer0[AUDIO_BUF_LEN];
static int16_t audio_buffer1[AUDIO_BUF_LEN];
int16_t *samples;
if (select_buffer == 0) {
samples = audio_buffer0;
GPIO_ResetBits(GPIOD, GPIOD_BOARD_LED_RED);
select_buffer = 1;
} else {
samples = audio_buffer1;
GPIO_SetBits(GPIOD, GPIOD_BOARD_LED_RED);
select_buffer = 0;
}
size_t samples_len = cw_psk31_fill_buffer(samples, AUDIO_BUF_LEN);
if (samples_len == 0) {
for (int i = 0; i < AUDIO_BUF_LEN; i++) {
samples[i] = 0;
}
samples_len = AUDIO_BUF_LEN;
}
ProvideAudioBufferWithoutBlocking(samples, samples_len);
}
static struct gps_time_s gps_time;
static void gps_monit_task(void *pvParameters)
{
GPIO_SetBits(GPIOD, GPIOD_BOARD_LED_BLUE);
while (1) {
if (gps_locked()) {
gps_utctime(&gps_time);
if (gps_time.sec % 4 >= 2) {
GPIO_SetBits(GPIOD, GPIOD_BOARD_LED_BLUE);
}
else {
GPIO_ResetBits(GPIOD, GPIOD_BOARD_LED_BLUE);
}
}
vTaskDelay(100 / portTICK_RATE_MS);
}
}
static struct fsm_input_signals_t fsm_input;
static void exercise_fsm(void *pvParameters)
{
int cw_last_trigger = 0;
int last_tm_trigger = 0;
fsm_input.humidity = 0;
fsm_input.temp = 15;
fsm_input.swr_high = 0;
fsm_input.sstv_mode = 0;
fsm_input.wind_generator_ok = 1;
while (1) {
vTaskDelay(10 / portTICK_RATE_MS);
pio_set_fsm_signals(&fsm_input);
fsm_input.start_tm = (tm_trigger == 1 && last_tm_trigger == 0) ? 1 : 0;
last_tm_trigger = tm_trigger;
fsm_input.sq = fsm_input.carrier; // TODO clarify
fsm_input.cw_psk31_done = !cw_psk31_busy();
if (fsm_input.cw_psk31_done) {
GPIO_ResetBits(GPIOD, GPIOD_BOARD_LED_ORANGE);
}
else {
GPIO_SetBits(GPIOD, GPIOD_BOARD_LED_ORANGE);
}
fsm_update_inputs(&fsm_input);
fsm_update();
struct fsm_output_signals_t fsm_out;
fsm_get_outputs(&fsm_out);
pio_set_led_red(fsm_out.tx_on);
pio_set_led_yel(fsm_out.modulation);
pio_set_led_grn(fsm_input.carrier);
// Add message to CW generator only on rising edge of trigger
if (fsm_out.cw_psk31_trigger && !cw_last_trigger) {
cw_psk31_push_message(fsm_out.msg, fsm_out.cw_dit_duration, fsm_out.msg_frequency);
}
cw_last_trigger = fsm_out.cw_psk31_trigger;
}
}
void init() {
GPIO_InitTypeDef GPIO_InitStructure;
USART_InitTypeDef USART_InitStructure;
// ---------- SysTick timer -------- //
if (SysTick_Config(SystemCoreClock / 1000)) {
// Capture error
while (1){};
}
// Enable full access to FPU (Should be done automatically in system_stm32f4xx.c):
//SCB->CPACR |= ((3UL << 10*2)|(3UL << 11*2)); // set CP10 and CP11 Full Access
// GPIOD Periph clock enable
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOB, ENABLE);
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOC, ENABLE);
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOD, ENABLE);
// Configure PD12, PD13, PD14 and PD15 in output pushpull mode
GPIO_InitStructure.GPIO_Pin =
GPIOD_BOARD_LED_GREEN |
GPIOD_BOARD_LED_ORANGE |
GPIOD_BOARD_LED_RED |
GPIOD_BOARD_LED_BLUE;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(GPIOD, &GPIO_InitStructure);
// Init PushButton
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_Init(GPIOA, &GPIO_InitStructure);
// ------ UART ------ //
// Clock
RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE);
// IO
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5 | GPIO_Pin_6;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
GPIO_Init(GPIOD, &GPIO_InitStructure);
GPIO_PinAFConfig(GPIOD, GPIO_PinSource5, GPIO_AF_USART1);
GPIO_PinAFConfig(GPIOD, GPIO_PinSource6, GPIO_AF_USART1);
// Conf
USART_InitStructure.USART_BaudRate = 115200;
USART_InitStructure.USART_WordLength = USART_WordLength_8b;
USART_InitStructure.USART_StopBits = USART_StopBits_1;
USART_InitStructure.USART_Parity = USART_Parity_No;
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
USART_InitStructure.USART_Mode = USART_Mode_Tx | USART_Mode_Rx;
USART_Init(USART2, &USART_InitStructure);
// Enable
USART_Cmd(USART2, ENABLE);
}
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