reflow-oven-control-sw/stm-firmware/main.c

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/* Reflow Oven Controller
*
* Copyright (C) 2020 Mario Hüttel <mario.huettel@gmx.net>
*
* This file is part of the Reflow Oven Controller Project.
*
* The reflow oven controller is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* The Reflow Oven Control Firmware is distributed in the hope that it will be useful,
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* 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 the reflow oven controller project.
* If not, see <http://www.gnu.org/licenses/>.
*/
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/**
* @file main.c
* @brief Main file for firmware
*/
#include <stdlib.h>
#include <string.h>
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/* #include <arm_math.h> */
#include <stm32/stm32f4xx.h>
#include <cmsis/core_cm4.h>
#include <setup/system_stm32f4xx.h>
#include <reflow-controller/systick.h>
#include <reflow-controller/adc-meas.h>
#include <reflow-controller/shell.h>
#include <reflow-controller/pid-controller.h>
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#include <reflow-controller/digio.h>
#include "fatfs/shimatta_sdio_driver/shimatta_sdio.h"
#include <reflow-controller/temp-converter.h>
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#include <reflow-controller/rotary-encoder.h>
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#include <stm-periph/stm32-gpio-macros.h>
#include <stm-periph/clock-enable-manager.h>
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#include <stm-periph/uart.h>
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#include <reflow-controller/shell-uart-config.h>
#include <helper-macros/helper-macros.h>
#include <fatfs/ff.h>
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static void setup_nvic_priorities()
{
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/* No sub priorities */
NVIC_SetPriorityGrouping(2);
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/* Setup Priorities */
NVIC_SetPriority(ADC_IRQn, 2);
NVIC_SetPriority(DMA2_Stream0_IRQn, 1);
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NVIC_SetPriority(DMA2_Stream7_IRQn, 3);
}
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static float pt1000_value;
static volatile int pt1000_value_status;
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static uint32_t rot;
static volatile float pid_out;
static volatile float current_temperature;
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FATFS fs;
FATFS *fs_ptr = &fs;
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static inline void uart_gpio_config()
{
#ifdef DEBUGBUILD
rcc_manager_enable_clock(&RCC->AHB1ENR, BITMASK_TO_BITNO(SHELL_UART_PORT_RCC_MASK));
SHELL_UART_PORT->MODER &= MODER_DELETE(SHELL_UART_TX_PIN) & MODER_DELETE(SHELL_UART_RX_PIN);
SHELL_UART_PORT->MODER |= ALTFUNC(SHELL_UART_RX_PIN) | ALTFUNC(SHELL_UART_TX_PIN);
SETAF(SHELL_UART_PORT, SHELL_UART_RX_PIN, SHELL_UART_RX_PIN_ALTFUNC);
SETAF(SHELL_UART_PORT, SHELL_UART_TX_PIN, SHELL_UART_TX_PIN_ALTFUNC);
#endif
}
static char shell_uart_tx_buff[128];
static char shell_uart_rx_buff[32];
struct stm_uart shell_uart;
static shellmatta_retCode_t write_shell_callback(const char *data, uint32_t len)
{
uart_send_array_with_dma(&shell_uart, data, len);
return SHELLMATTA_OK;
}
static inline void setup_sell_uart(struct stm_uart *uart)
{
uart->rx = 1;
uart->tx = 1;
uart->brr_val = SHELL_UART_BRR_REG_VALUE;
uart->rcc_reg = &SHELL_UART_RCC_REG;
uart->rcc_bit_no = BITMASK_TO_BITNO(SHELL_UART_RCC_MASK);
uart->uart_dev = SHELL_UART_PERIPH;
uart->dma_rx_buff = shell_uart_rx_buff;
uart->dma_tx_buff = shell_uart_tx_buff;
uart->rx_buff_count = sizeof(shell_uart_rx_buff);
uart->tx_buff_count = sizeof(shell_uart_tx_buff);
uart->base_dma_num = 2;
uart->dma_rx_stream = SHELL_UART_RECEIVE_DMA_STREAM;
uart->dma_tx_stream = SHELL_UART_SEND_DMA_STREAM;
uart->dma_rx_trigger_channel = SHELL_UART_RX_DMA_TRIGGER;
uart->dma_tx_trigger_channel = SHELL_UART_TX_DMA_TRIGGER;
uart_init(uart);
NVIC_EnableIRQ(DMA2_Stream7_IRQn);
}
static bool mount_sd_card_if_avail(bool mounted)
{
FRESULT res;
if (sdio_check_inserted() && mounted) {
memset(fs_ptr, 0, sizeof(FATFS));
return false;
}
if (!sdio_check_inserted() && !mounted) {
res = f_mount(fs_ptr, "0:/", 1);
if (res == FR_OK) {
return true;
} else {
return false;
}
}
return mounted;
}
const char *oven_controller_hello_world = "Hello world :)\n";
int main()
{
bool sd_card_mounted = false;
FIL test_file;
const char *uart_input;
size_t uart_input_len;
shellmatta_handle_t shell_handle;
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int uart_receive_status;
static struct pid_controller pid;
uint64_t pid_timestamp = 0;
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setup_nvic_priorities();
systick_setup();
adc_pt1000_setup_meas();
digio_setup_default_all();
led_setup();
loudspeaker_setup();
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rotary_encoder_setup();
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uart_gpio_config();
setup_sell_uart(&shell_uart);
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shell_handle = shell_init(write_shell_callback);
shell_print_motd(shell_handle);
if (f_mount(fs_ptr, "0:/", 1) == FR_OK) {
sd_card_mounted = true;
f_open(&test_file, "hello-world.txt", FA_OPEN_APPEND | FA_WRITE);
f_write(&test_file, oven_controller_hello_world, strlen(oven_controller_hello_world), NULL);
f_close(&test_file);
}
pid_init(&pid, 0.1, 0.1, 4.0, 0.0, 100.0, 40.0);
pid_zero(&pid);
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while (1) {
sd_card_mounted = mount_sd_card_if_avail(sd_card_mounted);
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pt1000_value_status = adc_pt1000_get_current_resistance(&pt1000_value);
if (pt1000_value_status >= 0) {
(void)temp_converter_convert_resistance_to_temp(pt1000_value, (float *)&current_temperature);
if ((systick_get_global_tick() - pid_timestamp) >= 250) {
pid_out = pid_sample(&pid, 100.0 - current_temperature);
pid_timestamp = systick_get_global_tick();
}
}
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rot = rotary_encoder_get_abs_val();
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uart_receive_status = uart_receive_data_with_dma(&shell_uart, &uart_input, &uart_input_len);
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if (uart_receive_status >= 1)
shell_handle_input(shell_handle, uart_input, uart_input_len);
}
}
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void sdio_wait_ms(uint32_t ms)
{
systick_wait_ms(ms);
}
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void DMA2_Stream7_IRQHandler()
{
uint32_t hisr = DMA2->HISR;
DMA2->HIFCR = hisr;
if (hisr & DMA_HISR_TCIF7) {
uart_tx_dma_complete_int_callback(&shell_uart);
}
}