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Diffstat (limited to 'ports/stm32/uart.c')
-rw-r--r--ports/stm32/uart.c40
1 files changed, 33 insertions, 7 deletions
diff --git a/ports/stm32/uart.c b/ports/stm32/uart.c
index 63de8cc6f..f1637fd49 100644
--- a/ports/stm32/uart.c
+++ b/ports/stm32/uart.c
@@ -115,6 +115,15 @@
#define USART_CR3_IE_ALL (USART_CR3_IE_BASE | USART_CR3_WUFIE)
#endif
+#elif defined(STM32U5)
+#define USART_CR1_IE_ALL (USART_CR1_IE_BASE | USART_CR1_EOBIE | USART_CR1_RTOIE | USART_CR1_CMIE)
+#define USART_CR2_IE_ALL (USART_CR2_IE_BASE)
+#if defined(USART_CR3_TCBGTIE)
+#define USART_CR3_IE_ALL (USART_CR3_IE_BASE | USART_CR3_TCBGTIE)
+#else
+#define USART_CR3_IE_ALL (USART_CR3_IE_BASE)
+#endif
+
#endif
typedef struct _machine_uart_irq_map_t {
@@ -256,7 +265,7 @@ bool uart_exists(int uart_id) {
// assumes Init parameters have been set up correctly
bool uart_init(machine_uart_obj_t *uart_obj,
- uint32_t baudrate, uint32_t bits, uint32_t parity, uint32_t stop, uint32_t flow) {
+ uint32_t baudrate, uint32_t bits, uint32_t parity, uint32_t stop, uint32_t flow, uint32_t invert) {
USART_TypeDef *UARTx;
IRQn_Type irqn;
uint8_t uart_fn = AF_FN_UART;
@@ -664,6 +673,23 @@ bool uart_init(machine_uart_obj_t *uart_obj,
huart.Init.Mode = UART_MODE_TX_RX;
huart.Init.HwFlowCtl = flow;
huart.Init.OverSampling = UART_OVERSAMPLING_16;
+ #if defined(STM32U5)
+ huart.Init.ClockPrescaler = UART_PRESCALER_DIV16;
+ #endif
+
+ #if defined(STM32H7)
+ huart.AdvancedInit.AdvFeatureInit = (UART_ADVFEATURE_TXINVERT_INIT | UART_ADVFEATURE_RXINVERT_INIT);
+ if (invert & UART_ADVFEATURE_RXINVERT_INIT) {
+ huart.AdvancedInit.RxPinLevelInvert = UART_ADVFEATURE_RXINV_ENABLE;
+ } else {
+ huart.AdvancedInit.RxPinLevelInvert = UART_ADVFEATURE_RXINV_DISABLE;
+ }
+ if (invert & UART_ADVFEATURE_TXINVERT_INIT) {
+ huart.AdvancedInit.TxPinLevelInvert = UART_ADVFEATURE_TXINV_ENABLE;
+ } else {
+ huart.AdvancedInit.TxPinLevelInvert = UART_ADVFEATURE_TXINV_DISABLE;
+ }
+ #endif
#if defined(STM32G4) || defined(STM32H7) || defined(STM32N6) // WB also has a fifo..
huart.FifoMode = UART_FIFOMODE_ENABLE;
@@ -1036,14 +1062,14 @@ uint32_t uart_get_baudrate(machine_uart_obj_t *self) {
#if defined(LPUART1)
if (self->uart_id == PYB_LPUART_1) {
return LL_LPUART_GetBaudRate(self->uartx, uart_get_source_freq(self)
- #if defined(STM32G0) || defined(STM32G4) || defined(STM32H5) || defined(STM32H7) || defined(STM32N6) || defined(STM32WB) || defined(STM32WL)
+ #if defined(STM32G0) || defined(STM32G4) || defined(STM32H5) || defined(STM32H7) || defined(STM32N6) || defined(STM32U5) || defined(STM32WB) || defined(STM32WL)
, self->uartx->PRESC
#endif
);
}
#endif
return LL_USART_GetBaudRate(self->uartx, uart_get_source_freq(self),
- #if defined(STM32G0) || defined(STM32G4) || defined(STM32H5) || defined(STM32H7) || defined(STM32N6) || defined(STM32WB) || defined(STM32WL)
+ #if defined(STM32G0) || defined(STM32G4) || defined(STM32H5) || defined(STM32H7) || defined(STM32N6) || defined(STM32U5) || defined(STM32WB) || defined(STM32WL)
self->uartx->PRESC,
#endif
LL_USART_OVERSAMPLING_16);
@@ -1053,7 +1079,7 @@ void uart_set_baudrate(machine_uart_obj_t *self, uint32_t baudrate) {
#if defined(LPUART1)
if (self->uart_id == PYB_LPUART_1) {
LL_LPUART_SetBaudRate(self->uartx, uart_get_source_freq(self),
- #if defined(STM32G0) || defined(STM32G4) || defined(STM32H5) || defined(STM32H7) || defined(STM32N6) || defined(STM32WB) || defined(STM32WL)
+ #if defined(STM32G0) || defined(STM32G4) || defined(STM32H5) || defined(STM32H7) || defined(STM32N6) || defined(STM32U5) || defined(STM32WB) || defined(STM32WL)
LL_LPUART_PRESCALER_DIV1,
#endif
baudrate);
@@ -1061,7 +1087,7 @@ void uart_set_baudrate(machine_uart_obj_t *self, uint32_t baudrate) {
}
#endif
LL_USART_SetBaudRate(self->uartx, uart_get_source_freq(self),
- #if defined(STM32G0) || defined(STM32G4) || defined(STM32H5) || defined(STM32H7) || defined(STM32N6) || defined(STM32WB) || defined(STM32WL)
+ #if defined(STM32G0) || defined(STM32G4) || defined(STM32H5) || defined(STM32H7) || defined(STM32N6) || defined(STM32U5) || defined(STM32WB) || defined(STM32WL)
LL_USART_PRESCALER_DIV1,
#endif
LL_USART_OVERSAMPLING_16, baudrate);
@@ -1112,7 +1138,7 @@ int uart_rx_char(machine_uart_obj_t *self) {
return data;
} else {
// no buffering
- #if defined(STM32F0) || defined(STM32F7) || defined(STM32G0) || defined(STM32G4) || defined(STM32H5) || defined(STM32L0) || defined(STM32L4) || defined(STM32H7) || defined(STM32N6) || defined(STM32WB) || defined(STM32WL)
+ #if defined(STM32F0) || defined(STM32F7) || defined(STM32G0) || defined(STM32G4) || defined(STM32H5) || defined(STM32L0) || defined(STM32L4) || defined(STM32H7) || defined(STM32N6) || defined(STM32U5) || defined(STM32WB) || defined(STM32WL)
int data = self->uartx->RDR & self->char_mask;
self->uartx->ICR = USART_ICR_ORECF; // clear ORE if it was set
return data;
@@ -1267,7 +1293,7 @@ void uart_irq_handler(mp_uint_t uart_id) {
uint16_t next_head = (self->read_buf_head + 1) % self->read_buf_len;
if (next_head != self->read_buf_tail) {
// only read data if room in buf
- #if defined(STM32F0) || defined(STM32F7) || defined(STM32G0) || defined(STM32G4) || defined(STM32H5) || defined(STM32H7) || defined(STM32L0) || defined(STM32L4) || defined(STM32N6) || defined(STM32WB) || defined(STM32WL)
+ #if defined(STM32F0) || defined(STM32F7) || defined(STM32G0) || defined(STM32G4) || defined(STM32H5) || defined(STM32H7) || defined(STM32L0) || defined(STM32L4) || defined(STM32N6) || defined(STM32U5) || defined(STM32WB) || defined(STM32WL)
int data = self->uartx->RDR; // clears UART_FLAG_RXNE
#else
self->mp_irq_flags = self->uartx->SR; // resample to get any new flags since next read of DR will clear SR
generated by cgit v1.2.3 (git 2.46.0) at 2025-10-31 20:00:34 +0000