generated from hulk/gd32e23x_template
93 lines
1.9 KiB
C
93 lines
1.9 KiB
C
/*!
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\file main.c
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\brief led spark with systick, USART print and key example
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\version 2024-02-22, V2.1.0, firmware for GD32E23x
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*/
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#include "main.h"
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#include <stdio.h>
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#include "gd32e23x.h"
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#include "systick.h"
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#include "gd32e23x_libopt.h"
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#include "rs485.h"
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#include "led.h"
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#include "i2c.h"
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#include "ldc1612.h"
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#include "board_config.h"
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#ifdef SOFTWARE_IIC
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#include "soft_i2c.h"
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#else
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#include "i2c.h"
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#endif
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void watchdog_init(void) {
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/* Enable the LSI clock */
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rcu_osci_on(RCU_IRC40K);
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rcu_osci_stab_wait(RCU_IRC40K);
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/* Configure FWDGT counter clock: 40KHz(IRC40K) / 64 = 0.625 KHz */
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fwdgt_config(625, FWDGT_PSC_DIV64); // Set timeout to 1 seconds (625 / 0.625 KHz)
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/* Enable FWDGT */
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fwdgt_enable();
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}
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void reset_mcu(void) {
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/* Enable the write access to the FWDGT_CTL register */
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FWDGT_CTL = FWDGT_WRITEACCESS_ENABLE;
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/* Configure FWDGT to trigger a system reset */
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fwdgt_config(50, FWDGT_PSC_DIV4);
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/* Reload the counter to trigger the reset */
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fwdgt_counter_reload();
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}
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/*!
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\brief main function
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\param[in] none
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\param[out] none
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\retval none
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*/
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int main(void) {
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setbuf(stdout, NULL);
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/* configure systick */
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systick_config();
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/* configure USART */
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rs485_config();
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/* configure LED */
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led_config();
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/* configure I2C */
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#ifdef SOFTWARE_IIC
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soft_i2c_config();
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#else
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i2c_config();
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#endif
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#ifdef DEBUG_VERBOES
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ldc1612_iic_get_sensor_infomation();
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#endif
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/* configure LDC1612 */
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ldc1612_single_ch0_config();
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/* Initialize watchdog */
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watchdog_init();
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while (1) {
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delay_ms(99);
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fwdgt_counter_reload();
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}
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}
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/* retarget the C library printf function to the USART */
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int _write(int fd, char *pBuffer, int size) {
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for (int i = 0; i < size; i++) {
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usart_data_transmit(USART0, (uint8_t) pBuffer[i]);
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while (RESET == usart_flag_get(USART0, USART_FLAG_TBE));
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}
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return size;
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}
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