x 過去ログを見よ
x PA_2をOBでGPIOに出来る人むけ
x STM32G031は、秋月で売っているSTM32G031J6M6の事
目的
シリアルのテスト
//HAL_ds1307_S_SER_031_1
#include "mbed.h"
int main()
{
UART_HandleTypeDef hlpuart1;
RCC_PeriphCLKInitTypeDef PeriphClkInit = {0};
PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_LPUART1;
PeriphClkInit.Lpuart1ClockSelection = RCC_LPUART1CLKSOURCE_HSI;
HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit);
__HAL_RCC_GPIOA_CLK_ENABLE();
__HAL_RCC_LPUART1_CLK_ENABLE();
GPIO_InitTypeDef GPIO_InitStruct = {0};
GPIO_InitStruct.Pin = GPIO_PIN_2;
GPIO_InitStruct.Mode = GPIO_MODE_AF_OD;
GPIO_InitStruct.Pull = GPIO_PULLUP;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
GPIO_InitStruct.Alternate = GPIO_AF6_LPUART1;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
hlpuart1.Instance = LPUART1;
hlpuart1.Init.BaudRate = 9600;
hlpuart1.Init.WordLength = UART_WORDLENGTH_8B;
hlpuart1.Init.StopBits = UART_STOPBITS_1;
hlpuart1.Init.Parity = UART_PARITY_NONE;
hlpuart1.Init.Mode = UART_MODE_TX_RX;
hlpuart1.Init.HwFlowCtl = UART_HWCONTROL_NONE;
hlpuart1.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE;
hlpuart1.Init.ClockPrescaler = UART_PRESCALER_DIV1;
hlpuart1.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;
hlpuart1.FifoMode = UART_FIFOMODE_DISABLE;
HAL_HalfDuplex_Init(&hlpuart1);
HAL_UARTEx_SetTxFifoThreshold(&hlpuart1, UART_TXFIFO_THRESHOLD_1_8);
HAL_UARTEx_SetRxFifoThreshold(&hlpuart1, UART_RXFIFO_THRESHOLD_1_8);
HAL_UARTEx_DisableFifoMode(&hlpuart1);
while(1) {
//表示
// 12345678901
HAL_UART_Transmit(&hlpuart1, (uint8_t *)"hello world", 11, 10);
HAL_UART_Transmit(&hlpuart1, (uint8_t *)"\r", 1, 10);
HAL_UART_Transmit(&hlpuart1, (uint8_t *)"\n", 1, 10);
// 1秒待つ
HAL_Delay(1000);
}//while
}//main