106 lines
2.5 KiB
C
106 lines
2.5 KiB
C
#include "uart.h"
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#include "gpio.h"
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//faire GPIO
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char data1 = 0x00;
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char data2 = 0x00;
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char data3 = 0x00;
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void MyUART_Init(MyUART_Struct_Typedef * UARTStructPtr){
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MyUART_setClockBit(UARTStructPtr->UART);
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UARTStructPtr->UART->BRR = 72000000/(UARTStructPtr->BaudRate);
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UARTStructPtr->UART->CR1 |= ((UARTStructPtr->Wlengh)<<12);
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UARTStructPtr->UART->CR1 |= (0x1<<10);
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if(UARTStructPtr->Wparity == parity_none)
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UARTStructPtr->UART->CR1 &= ~(0x1<<10);
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if(UARTStructPtr->Wparity == parity_odd)
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UARTStructPtr->UART->CR1 |= (0x1<<9);
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if(UARTStructPtr->Wparity == parity_even)
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UARTStructPtr->UART->CR1 &= ~(0x1<<9);
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if(UARTStructPtr->Wstop == stop1b)
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UARTStructPtr->UART->CR2 &= ~(0x3<<12);
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if(UARTStructPtr->Wstop == stop2b){
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UARTStructPtr->UART->CR2 &= ~(0x3<<12);
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UARTStructPtr->UART->CR2 |= (0x1<<13);
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}
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UARTStructPtr->UART->CR1 |= (USART_CR1_TE | USART_CR1_RE | USART_CR1_UE | USART_CR1_RXNEIE);
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NVIC_EnableIRQ(USART1_IRQn);
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}
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int MyUART_setClockBit(USART_TypeDef * UART)
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{
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if (UART == USART1)
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{
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RCC->APB2ENR |= RCC_APB2ENR_USART1EN; //72MHz
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return 0;
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}
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else if (UART == USART2)
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{
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RCC->APB1ENR |= RCC_APB1ENR_USART2EN; //36MHz
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return 0;
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}
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else if (UART == USART3)
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{
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RCC->APB1ENR |= RCC_APB1ENR_USART3EN; //36MHz //Maybe return the clock base mhz ?
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return 0;
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}
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else {
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return 1;
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}
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}
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void USART1_IRQHandler(void)
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{
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// Check if receive data register not empty
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if(USART1->SR & USART_SR_RXNE)
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{
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data1 = USART1->DR; // read received data
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// do something with received data
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}
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}
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void USART2_IRQHandler(void)
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{
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// Check if receive data register not empty
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if(USART2->SR & USART_SR_RXNE)
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{
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data2 = USART2->DR; // read received data
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// do something with received data
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}
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}
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void USART3_IRQHandler(void)
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{
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// Check if receive data register not empty
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if(USART3->SR & USART_SR_RXNE)
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{
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data3 = USART3->DR; // read received data
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// do something with received data
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}
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}
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char MyUART_Read(MyUART_Struct_Typedef * UARTStructPtr)
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{
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if(UARTStructPtr->UART == USART1)
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return data1;
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else if(UARTStructPtr->UART == USART2)
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return data2;
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else if(UARTStructPtr->UART == USART3)
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return data3;
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else
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return 0xFF;
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}
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/* exemple utilisation fonction :
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UART1.UART = USART1; // choix UART (USART1, USART2, USART3)
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UART1.BaudRate = 9600; // Vitesse de communication MAX 118200
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UART1.Wlengh = Wlengh8; // longeur du mot (Wlengh8 ,Wlengh9)
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UART1.Wparity = parity_even; // parit<69> (parity_even, parity_odd, parity_none)
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UART1.Wstop = stop1b; // nombre bit de stop (stop1b, stop2b)
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MyUART_Init(&UART1); // initialisation
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*/
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