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swap TXRX to avoid DFU hijacking

This commit is contained in:
Hugo Chiang 2022-12-28 22:09:46 +08:00
parent 26e13e9d60
commit effce3772d
1 changed files with 28 additions and 26 deletions
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54
src/main/drivers/serial_uart_at32bsp.c
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@ -63,33 +63,32 @@ static void usartConfigurePinInversion(uartPort_t *uartPort) {
#endif #endif
} }
static uartDevice_t *uartFindDevice(uartPort_t *uartPort)
{
for (uint32_t i = 0; i < UARTDEV_COUNT_MAX; i++) {
uartDevice_t *candidate = uartDevmap[i];
if (&candidate->port == uartPort) {
return candidate;
}
}
return NULL;
}
static void uartConfigurePinSwap(uartPort_t *uartPort)
{
uartDevice_t *uartDevice = uartFindDevice(uartPort);
if (!uartDevice) {
return;
}
if (uartDevice->pinSwap) {
usart_transmit_receive_pin_swap(uartDevice->port.USARTx,TRUE);
}
}
void uartReconfigure(uartPort_t *uartPort) void uartReconfigure(uartPort_t *uartPort)
{ {
// USART_InitTypeDef USART_InitStructure;
// USART_Cmd(uartPort->USARTx, DISABLE);
// USART_InitStructure.USART_BaudRate = uartPort->port.baudRate;
// according to the stm32 documentation wordlen has to be 9 for parity bits
// this does not seem to matter for rx but will give bad data on tx!
// This seems to cause RX to break on STM32F1, see https://github.com/betaflight/betaflight/pull/1654
// if ( (uartPort->port.options & SERIAL_PARITY_EVEN)) {
// USART_InitStructure.USART_WordLength = USART_WordLength_9b;
// } else {
// USART_InitStructure.USART_WordLength = USART_WordLength_8b;
// }
// USART_InitStructure.USART_StopBits = (uartPort->port.options & SERIAL_STOPBITS_2) ? USART_StopBits_2 : USART_StopBits_1;
// USART_InitStructure.USART_Parity = (uartPort->port.options & SERIAL_PARITY_EVEN) ? USART_Parity_Even : USART_Parity_No;
//
// USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
// USART_InitStructure.USART_Mode = 0;
// if (uartPort->port.mode & MODE_RX)
// USART_InitStructure.USART_Mode |= USART_Mode_Rx;
// if (uartPort->port.mode & MODE_TX)
// USART_InitStructure.USART_Mode |= USART_Mode_Tx;
//
// USART_Init(uartPort->USARTx, &USART_InitStructure);
// void usart_init(usart_type* usart_x, uint32_t baud_rate, usart_data_bit_num_type data_bit, usart_stop_bit_num_type stop_bit)
usart_enable(uartPort->USARTx,DISABLE); usart_enable(uartPort->USARTx,DISABLE);
//init //init
@ -111,9 +110,12 @@ void uartReconfigure(uartPort_t *uartPort)
if (uartPort->port.mode & MODE_TX) if (uartPort->port.mode & MODE_TX)
usart_transmitter_enable(uartPort->USARTx,TRUE); usart_transmitter_enable(uartPort->USARTx,TRUE);
//config pin swap //config pin inverter
usartConfigurePinInversion(uartPort); usartConfigurePinInversion(uartPort);
//config pin swap
uartConfigurePinSwap(uartPort);
if (uartPort->port.options & SERIAL_BIDIR) if (uartPort->port.options & SERIAL_BIDIR)
// USART_HalfDuplexCmd(uartPort->USARTx, ENABLE); // USART_HalfDuplexCmd(uartPort->USARTx, ENABLE);
usart_single_line_halfduplex_select(uartPort->USARTx, TRUE); usart_single_line_halfduplex_select(uartPort->USARTx, TRUE);