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telemetry driver: clear TC flag before re-enabling TC interrupt

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This prevents the USART TC IRQ handler to trigger right after the DMA request has completed, and thus turning the output OFF before the last byte has been transmitted.

Resolves #801
This commit is contained in:
Raphael Coeffic
2021-09-27 11:05:27 +02:00
committed by Raphael Coeffic
parent 182bc2355e
commit 07d0a66368
3 changed files with 12 additions and 0 deletions
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radio/src/targets/horus/telemetry_driver.cpp
+4
View File
@@ -343,7 +343,11 @@ extern "C" void TELEMETRY_DMA_TX_IRQHandler(void)
DEBUG_INTERRUPT(INT_TELEM_DMA);
if (DMA_GetITStatus(TELEMETRY_DMA_Stream_TX, TELEMETRY_DMA_TX_FLAG_TC)) {
DMA_ClearITPendingBit(TELEMETRY_DMA_Stream_TX, TELEMETRY_DMA_TX_FLAG_TC);
// clear TC flag before enabling interrupt
TELEMETRY_USART->SR &= ~USART_SR_TC;
TELEMETRY_USART->CR1 |= USART_CR1_TCIE;
if (telemetryProtocol == PROTOCOL_TELEMETRY_FRSKY_SPORT) {
outputTelemetryBuffer.reset();
}
radio/src/targets/nv14/telemetry_driver.cpp
+4
View File
@@ -166,7 +166,11 @@ extern "C" void TELEMETRY_DMA_TX_IRQHandler(void)
DEBUG_INTERRUPT(INT_TELEM_DMA);
if (DMA_GetITStatus(TELEMETRY_DMA_Stream_TX, TELEMETRY_DMA_TX_FLAG_TC)) {
DMA_ClearITPendingBit(TELEMETRY_DMA_Stream_TX, TELEMETRY_DMA_TX_FLAG_TC);
// clear TC flag before enabling interrupt
TELEMETRY_USART->SR &= ~USART_SR_TC;
TELEMETRY_USART->CR1 |= USART_CR1_TCIE;
if (telemetryProtocol == PROTOCOL_TELEMETRY_FRSKY_SPORT) {
outputTelemetryBuffer.reset();
}
radio/src/targets/taranis/telemetry_driver.cpp
+4
View File
@@ -314,7 +314,11 @@ extern "C" void TELEMETRY_DMA_TX_IRQHandler(void)
DEBUG_INTERRUPT(INT_TELEM_DMA);
if (DMA_GetITStatus(TELEMETRY_DMA_Stream_TX, TELEMETRY_DMA_TX_FLAG_TC)) {
DMA_ClearITPendingBit(TELEMETRY_DMA_Stream_TX, TELEMETRY_DMA_TX_FLAG_TC);
// clear TC flag before enabling interrupt
TELEMETRY_USART->SR &= ~USART_SR_TC;
TELEMETRY_USART->CR1 |= USART_CR1_TCIE;
if (telemetryProtocol == PROTOCOL_TELEMETRY_FRSKY_SPORT) {
outputTelemetryBuffer.reset();
}