Вот код:
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Код: Выделить всё
#include "stm32f10x_usart.h"
#include "stm32f10x_rcc.h"
#include "stm32f10x_gpio.h"
#include "misc.h"
int i;
//ErrorStatus HSEStartUpStatus;
void NVIC_Configuration(void);
void GPIO_Configuration(void);
void USART_Configuration(void);
void USART1_IRQHandler(void);
void UARTSend(const unsigned char *pucBuffer, unsigned long ulCount);
void usart_rxtx(void);
int main(void)
{
usart_rxtx();
while(1)
{
UARTSend("Hello!", sizeof("Hello!"));
for(int i = 0; i <= 800000; i++) __nop();
USART_SendData(USART2, 0xFF);
for(int i = 0; i <= 800000; i++) __nop();
}
}
/******************************************************************************/
/* STM32F10x Peripherals Interrupt Handlers */
/******************************************************************************/
/**
* @brief This function handles USARTx global interrupt request
* @param None
* @retval None
*/
void USART1_IRQHandler(void)
{
if ((USART1->SR & USART_FLAG_RXNE) != (u16)RESET)
{
i = USART_ReceiveData(USART1);
if(i == '1'){
GPIO_WriteBit(GPIOC,GPIO_Pin_13,Bit_SET); // Set '1' on PA8
UARTSend("LED ON\r\n",sizeof("LED ON\r\n")); // Send message to UART1
}
else if(i == '0'){
GPIO_WriteBit(GPIOC,GPIO_Pin_13,Bit_RESET); // Set '0' on PA8
UARTSend("LED OFF\r\n",sizeof("LED OFF\r\n"));
}
}
}
void usart_rxtx(void)
{
const unsigned char welcome_str[] = " Welcome to Bluetooth!\r\n";
/* Enable USART1 and GPIOA clock */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE);
/* Remap USART1: TX -> PB6, RX -> PB7 */
GPIO_PinRemapConfig(GPIO_Remap_USART1, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1 | RCC_APB2Periph_GPIOC, ENABLE);
/* NVIC Configuration */
NVIC_Configuration();
/* Configure the GPIOs */
GPIO_Configuration();
/* Configure the USART1 */
USART_Configuration();
/* Enable the USART1 Receive interrupt: this interrupt is generated when the
USART1 receive data register is not empty */
USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);
/* print welcome information */
UARTSend(welcome_str, sizeof(welcome_str));
}
/*******************************************************************************
* Function Name : GPIO_Configuration
* Description : Configures the different GPIO ports
*******************************************************************************/
void GPIO_Configuration(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
/* Configure (PC.13) as output */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(GPIOC, &GPIO_InitStructure); // Save
/* Configure USART1 Tx (PB.06) as alternate function push-pull */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOB, &GPIO_InitStructure);
/* Configure USART1 Rx (PB.07) as input floating */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOB, &GPIO_InitStructure);
}
/*******************************************************************************
* Function Name : USART_Configuration
* Description : Configures the USART1
*******************************************************************************/
void USART_Configuration(void)
{
USART_InitTypeDef USART_InitStructure;
/* USART1 configuration ------------------------------------------------------*/
USART_InitStructure.USART_BaudRate = 9600; // Baud Rate
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_Rx | USART_Mode_Tx;
USART_Init(USART1, &USART_InitStructure);
/* Enable USART1 */
USART_Cmd(USART1, ENABLE);
}
/**
* @brief Configures the nested vectored interrupt controller.
* @param None
* @retval None
*/
void NVIC_Configuration(void)
{
NVIC_InitTypeDef NVIC_InitStructure;
/* Enable the USARTx Interrupt */
NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
}
/*******************************************************************************
* Function Name : UARTSend
* Description : Send a string to the UART.
* Input : - pucBuffer: buffers to be printed.
* : - ulCount : buffer's length
*******************************************************************************/
void UARTSend(const unsigned char *pucBuffer, unsigned long ulCount)
{
//
// Loop while there are more characters to send.
//
while(ulCount--)
{
USART_SendData(USART1, (uint16_t) *pucBuffer++);
/* Loop until the end of transmission */
while(USART_GetFlagStatus(USART1, USART_FLAG_TC) == RESET)
{
}
}
}Кабели не перебиты. Во время соединения Bluetooth модуль HC-05 прерывисто мигает.
Подключал модуль напрямую к плате с МК. Может надо через подтяжку как здесь?
Проверил пайку на плате. Пайка в норме
. То же если их подключить к мк.
