kopia lustrzana https://github.com/sq8vps/vp-digi
228 wiersze
5.3 KiB
C
228 wiersze
5.3 KiB
C
/*
|
|
Copyright 2020-2023 Piotr Wilkon
|
|
This file is part of VP-Digi.
|
|
|
|
VP-Digi is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
VP-Digi is distributed in the hope that it will be useful,
|
|
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 VP-Digi. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "drivers/uart.h"
|
|
#include "drivers/systick.h"
|
|
#include "terminal.h"
|
|
#include "ax25.h"
|
|
#include "common.h"
|
|
#include <string.h>
|
|
#include "digipeater.h"
|
|
#include "kiss.h"
|
|
|
|
Uart Uart1, Uart2, UartUsb;
|
|
|
|
static void handleInterrupt(Uart *port)
|
|
{
|
|
if(port->port->SR & USART_SR_RXNE) //byte received
|
|
{
|
|
port->port->SR &= ~USART_SR_RXNE;
|
|
uint8_t data = port->port->DR;
|
|
port->rxBuffer[port->rxBufferHead++] = data; //store it
|
|
port->rxBufferHead %= UART_BUFFER_SIZE;
|
|
|
|
KissParse(port, data);
|
|
TermHandleSpecial(port);
|
|
|
|
}
|
|
if(port->port->SR & USART_SR_IDLE) //line is idle, end of data reception
|
|
{
|
|
port->port->DR; //reset idle flag by dummy read
|
|
if(port->rxBufferHead != 0)
|
|
{
|
|
if(((port->rxBuffer[port->rxBufferHead - 1] == '\r') || (port->rxBuffer[port->rxBufferHead - 1] == '\n'))) //data ends with \r or \n, process as data
|
|
{
|
|
port->rxType = DATA_TERM;
|
|
}
|
|
}
|
|
}
|
|
if(port->port->SR & USART_SR_TXE) //TX buffer empty
|
|
{
|
|
if((port->txBufferHead != port->txBufferTail) || port->txBufferFull) //if there is anything to transmit
|
|
{
|
|
port->port->DR = port->txBuffer[port->txBufferTail++];
|
|
port->txBufferTail %= UART_BUFFER_SIZE;
|
|
port->txBufferFull = 0;
|
|
}
|
|
else //nothing more to be transmitted
|
|
{
|
|
port->port->CR1 &= ~USART_CR1_TXEIE;
|
|
}
|
|
}
|
|
}
|
|
|
|
void USART1_IRQHandler(void) __attribute__ ((interrupt));
|
|
void USART1_IRQHandler(void)
|
|
{
|
|
handleInterrupt(&Uart1);
|
|
}
|
|
|
|
void USART2_IRQHandler(void) __attribute__ ((interrupt));
|
|
void USART2_IRQHandler(void)
|
|
{
|
|
handleInterrupt(&Uart2);
|
|
}
|
|
|
|
|
|
void UartSendByte(Uart *port, uint8_t data)
|
|
{
|
|
if(!port->enabled)
|
|
return;
|
|
|
|
if(port->isUsb)
|
|
{
|
|
CDC_Transmit_FS(&data, 1);
|
|
}
|
|
else
|
|
{
|
|
while(port->txBufferFull)
|
|
;
|
|
port->txBuffer[port->txBufferHead++] = data;
|
|
port->txBufferHead %= UART_BUFFER_SIZE;
|
|
if(port->txBufferHead == port->txBufferTail)
|
|
port->txBufferFull = 1;
|
|
if(0 == (port->port->CR1 & USART_CR1_TXEIE))
|
|
port->port->CR1 |= USART_CR1_TXEIE;
|
|
}
|
|
}
|
|
|
|
|
|
void UartSendString(Uart *port, void *data, uint16_t len)
|
|
{
|
|
if(0 == len)
|
|
len = strlen((char*)data);
|
|
|
|
for(uint16_t i = 0; i < len; i++)
|
|
{
|
|
UartSendByte(port, ((uint8_t*)data)[i]);
|
|
}
|
|
}
|
|
|
|
|
|
static unsigned int findHighestPosition(unsigned int n)
|
|
{
|
|
unsigned int i = 1;
|
|
while((i * 10) <= n)
|
|
i *= 10;
|
|
|
|
return i;
|
|
}
|
|
|
|
void UartSendNumber(Uart *port, int32_t n)
|
|
{
|
|
if(n < 0)
|
|
UartSendByte(port, '-');
|
|
n = abs(n);
|
|
unsigned int position = findHighestPosition(n);
|
|
while(position)
|
|
{
|
|
unsigned int number = n / position;
|
|
UartSendByte(port, (number + 48));
|
|
n -= (number * position);
|
|
position /= 10;
|
|
}
|
|
}
|
|
|
|
void UartInit(Uart *port, USART_TypeDef *uart, uint32_t baud)
|
|
{
|
|
port->port = uart;
|
|
port->baudrate = baud;
|
|
port->rxType = DATA_NOTHING;
|
|
port->rxBufferHead = 0;
|
|
port->txBufferHead = 0;
|
|
port->txBufferTail = 0;
|
|
port->txBufferFull = 0;
|
|
port->mode = MODE_KISS;
|
|
port->enabled = 0;
|
|
port->kissBufferHead = 0;
|
|
port->lastRxBufferHead = 0;
|
|
memset(port->rxBuffer, 0, sizeof(port->rxBuffer));
|
|
memset(port->txBuffer, 0, sizeof(port->txBuffer));
|
|
memset(port->kissBuffer, 0, sizeof(port->kissBuffer));
|
|
}
|
|
|
|
|
|
void UartConfig(Uart *port, uint8_t state)
|
|
{
|
|
if(port->port == USART1)
|
|
{
|
|
RCC->APB2ENR |= RCC_APB2ENR_IOPAEN;
|
|
RCC->APB2ENR |= RCC_APB2ENR_USART1EN;
|
|
GPIOA->CRH |= GPIO_CRH_MODE9_1;
|
|
GPIOA->CRH &= ~GPIO_CRH_CNF9_0;
|
|
GPIOA->CRH |= GPIO_CRH_CNF9_1;
|
|
GPIOA->CRH |= GPIO_CRH_CNF10_0;
|
|
GPIOA->CRH &= ~GPIO_CRH_CNF10_1;
|
|
|
|
USART1->BRR = (SystemCoreClock / (port->baudrate));
|
|
|
|
if(state)
|
|
USART1->CR1 |= USART_CR1_RXNEIE | USART_CR1_TE | USART_CR1_RE | USART_CR1_UE | USART_CR1_IDLEIE;
|
|
else
|
|
USART1->CR1 &= (~USART_CR1_RXNEIE) & (~USART_CR1_TE) & (~USART_CR1_RE) & (~USART_CR1_UE) & (~USART_CR1_IDLEIE);
|
|
|
|
NVIC_SetPriority(USART1_IRQn, 2);
|
|
if(state)
|
|
NVIC_EnableIRQ(USART1_IRQn);
|
|
else
|
|
NVIC_DisableIRQ(USART1_IRQn);
|
|
|
|
port->enabled = state > 0;
|
|
port->isUsb = 0;
|
|
}
|
|
else if(port->port == USART2)
|
|
{
|
|
RCC->APB2ENR |= RCC_APB2ENR_IOPAEN;
|
|
RCC->APB1ENR |= RCC_APB1ENR_USART2EN;
|
|
GPIOA->CRL |= GPIO_CRL_MODE2_1;
|
|
GPIOA->CRL &= ~GPIO_CRL_CNF2_0;
|
|
GPIOA->CRL |= GPIO_CRL_CNF2_1;
|
|
GPIOA->CRL |= GPIO_CRL_CNF3_0;
|
|
GPIOA->CRL &= ~GPIO_CRL_CNF3_1;
|
|
|
|
USART2->BRR = (SystemCoreClock / (port->baudrate * 2));
|
|
if(state)
|
|
USART2->CR1 |= USART_CR1_RXNEIE | USART_CR1_TE | USART_CR1_RE | USART_CR1_UE | USART_CR1_IDLEIE;
|
|
else
|
|
USART2->CR1 &= (~USART_CR1_RXNEIE) & (~USART_CR1_TE) & (~USART_CR1_RE) & (~USART_CR1_UE) & (~USART_CR1_IDLEIE);
|
|
|
|
NVIC_SetPriority(USART2_IRQn, 2);
|
|
if(state)
|
|
NVIC_EnableIRQ(USART2_IRQn);
|
|
else
|
|
NVIC_DisableIRQ(USART2_IRQn);
|
|
|
|
port->enabled = state > 0;
|
|
port->isUsb = 0;
|
|
}
|
|
else
|
|
{
|
|
port->isUsb = 1;
|
|
port->enabled = state > 0;
|
|
}
|
|
|
|
}
|
|
|
|
|
|
void UartClearRx(Uart *port)
|
|
{
|
|
port->rxBufferHead = 0;
|
|
port->rxType = DATA_NOTHING;
|
|
}
|
|
|