veles_labs/iaq_sensor_wired
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Implemented UART communication (initial version). Needs more testing and make the buffer smaller to save space. RX and TX have been swapped in the system for debug (bad solder joint).

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This commit is contained in:
David Žaitlík
2021-07-19 17:30:47 +02:00
parent 35e0e1fadc
commit 23f1f27c0e
3 changed files with 25 additions and 31 deletions
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31
fw/Core/Src/main.c
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@@ -47,8 +47,8 @@
* Desired interrupt period 60s
*/
const uint16_t tim21_prescaler = 60000-1; // 100Hz
const uint16_t tim21_period = 12000-1; // 60s
//const uint16_t tim21_period = 1200-1; // 6s
//const uint16_t tim21_period = 12000-1; // 60s
const uint16_t tim21_period = 1200-1; // 6s
//const uint16_t tim21_period = 200-1; // 1s
/* USER CODE END PV */
@@ -158,6 +158,11 @@ int main(void)
if (lpuart1_rx_done == 1)
{
/* Process the message */
uint8_t buff_pom[255];
for (uint8_t j = 0; j < lpuart1_rx_message_len; j ++)
{
buff_pom[j] = lpuart1_rx_message[j];
}
/* process_modbus_message(lpuart1_rx_message, lpuart1_rx_message_len); */
/* Reset the RX DONE flag */
@@ -193,6 +198,9 @@ int main(void)
tim21_elapsed_period = 0;
}
/* TEST START */
//LL_LPUART_TransmitData9(LPUART1, 0x69);
//LL_mDelay(250);
/* TODO: DELETE TEST */
/* RS485 test */
@@ -350,11 +358,9 @@ static void MX_LPUART1_UART_Init(void)
LL_APB1_GRP1_EnableClock(LL_APB1_GRP1_PERIPH_LPUART1);
LL_IOP_GRP1_EnableClock(LL_IOP_GRP1_PERIPH_GPIOA);
LL_IOP_GRP1_EnableClock(LL_IOP_GRP1_PERIPH_GPIOB);
/**LPUART1 GPIO Configuration
PA0-CK_IN ------> LPUART1_RX
PA1 ------> LPUART1_TX
PB1 ------> LPUART1_DE
*/
GPIO_InitStruct.Pin = LL_GPIO_PIN_0;
GPIO_InitStruct.Mode = LL_GPIO_MODE_ALTERNATE;
@@ -372,14 +378,6 @@ static void MX_LPUART1_UART_Init(void)
GPIO_InitStruct.Alternate = LL_GPIO_AF_6;
LL_GPIO_Init(GPIOA, &GPIO_InitStruct);
GPIO_InitStruct.Pin = LL_GPIO_PIN_1;
GPIO_InitStruct.Mode = LL_GPIO_MODE_ALTERNATE;
GPIO_InitStruct.Speed = LL_GPIO_SPEED_FREQ_VERY_HIGH;
GPIO_InitStruct.OutputType = LL_GPIO_OUTPUT_PUSHPULL;
GPIO_InitStruct.Pull = LL_GPIO_PULL_NO;
GPIO_InitStruct.Alternate = LL_GPIO_AF_4;
LL_GPIO_Init(GPIOB, &GPIO_InitStruct);
/* LPUART1 interrupt Init */
NVIC_SetPriority(LPUART1_IRQn, 0);
NVIC_EnableIRQ(LPUART1_IRQn);
@@ -394,10 +392,7 @@ static void MX_LPUART1_UART_Init(void)
LPUART_InitStruct.TransferDirection = LL_LPUART_DIRECTION_TX_RX;
LPUART_InitStruct.HardwareFlowControl = LL_LPUART_HWCONTROL_NONE;
LL_LPUART_Init(LPUART1, &LPUART_InitStruct);
LL_LPUART_EnableDEMode(LPUART1);
LL_LPUART_SetDESignalPolarity(LPUART1, LL_LPUART_DE_POLARITY_HIGH);
LL_LPUART_SetDEAssertionTime(LPUART1, 0);
LL_LPUART_SetDEDeassertionTime(LPUART1, 0);
LL_LPUART_SetTXRXSwap(LPUART1, LL_LPUART_TXRX_SWAPPED);
/* USER CODE BEGIN LPUART1_Init 2 */
/* Enable IDLE Interrupt */
@@ -406,6 +401,9 @@ static void MX_LPUART1_UART_Init(void)
/* Enable RX Not Empty Interrupt */
LL_LPUART_EnableIT_RXNE(LPUART1);
LL_LPUART_EnableDirectionRx(LPUART1);
LL_LPUART_EnableDirectionTx(LPUART1);
LL_LPUART_Enable(LPUART1);
/* USER CODE END LPUART1_Init 2 */
}
@@ -460,7 +458,6 @@ static void MX_GPIO_Init(void)
/* GPIO Ports Clock Enable */
LL_IOP_GRP1_EnableClock(LL_IOP_GRP1_PERIPH_GPIOA);
LL_IOP_GRP1_EnableClock(LL_IOP_GRP1_PERIPH_GPIOB);
/**/
LL_GPIO_SetOutputPin(LED_B_GPIO_Port, LED_B_Pin);

4
fw/Core/Src/stm32l0xx_it.c
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@@ -179,13 +179,13 @@ void LPUART1_IRQHandler(void)
/* USER CODE END LPUART1_IRQn 0 */
/* USER CODE BEGIN LPUART1_IRQn 1 */
/* If the IDLE flag is active */
if (LL_LPUART_IsActiveFlag_IDLE(LPUART1) == 1)
if (LL_LPUART_IsActiveFlag_IDLE(LPUART1) && LL_LPUART_IsEnabledIT_IDLE(LPUART1))
{
/* Clear the IDLE flag */
LL_LPUART_ClearFlag_IDLE(LPUART1);
/* Reset the buffer index */
lpuart1_rx_message_len = lpuart1_rx_message_index + 1;
lpuart1_rx_message_len = lpuart1_rx_message_index;
lpuart1_rx_message_index = 0;
lpuart1_rx_done = 1;
}