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stm32/uart: Add support for LPUART1 on L0, L4, H7 and WB MCUs.

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Add LPUART1 as a standard UART.  No low power features are supported, yet.
LPUART1 is enabled as the next available UART after the standard U(S)ARTs:

    STM32WB:      LPUART1 = UART(2)
    STM32L0:      LPUART1 = UART(6)
    STM32L4:      LPUART1 = UART(6)
    STM32H7:      LPUART1 = UART(9)

On all ports: LPUART1 = machine.UART('LP1')

LPUART1 is enabled by defining MICROPY_HW_LPUART1_TX and
MICROPY_HW_LPUART1_RX in mpconfigboard.h.

Signed-off-by: Chris Mason <c.mason@inchipdesign.com.au>
This commit is contained in:
Chris Mason
2021-02-17 11:07:34 +11:00
committed by Damien George
parent 1342debb9b
commit 9d674cf7ab
8 changed files with 108 additions and 7 deletions
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18
ports/stm32/stm32_it.c
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@@ -742,11 +742,13 @@ void USART1_IRQHandler(void) {
IRQ_EXIT(USART1_IRQn);
}
#if defined(USART2)
void USART2_IRQHandler(void) {
IRQ_ENTER(USART2_IRQn);
uart_irq_handler(2);
IRQ_EXIT(USART2_IRQn);
}
#endif
#if defined(STM32F0)
@@ -772,29 +774,37 @@ void USART4_5_IRQHandler(void) {
#else
#if defined(USART3)
void USART3_IRQHandler(void) {
IRQ_ENTER(USART3_IRQn);
uart_irq_handler(3);
IRQ_EXIT(USART3_IRQn);
}
#endif
#if defined(UART4)
void UART4_IRQHandler(void) {
IRQ_ENTER(UART4_IRQn);
uart_irq_handler(4);
IRQ_EXIT(UART4_IRQn);
}
#endif
#if defined(UART5)
void UART5_IRQHandler(void) {
IRQ_ENTER(UART5_IRQn);
uart_irq_handler(5);
IRQ_EXIT(UART5_IRQn);
}
#endif
#if defined(USART6)
void USART6_IRQHandler(void) {
IRQ_ENTER(USART6_IRQn);
uart_irq_handler(6);
IRQ_EXIT(USART6_IRQn);
}
#endif
#if defined(UART7)
void UART7_IRQHandler(void) {
@@ -830,6 +840,14 @@ void UART10_IRQHandler(void) {
#endif
#if defined(LPUART1)
void LPUART1_IRQHandler(void) {
IRQ_ENTER(LPUART1_IRQn);
uart_irq_handler(PYB_LPUART_1);
IRQ_EXIT(LPUART1_IRQn);
}
#endif
#if MICROPY_PY_PYB_LEGACY
#if defined(MICROPY_HW_I2C1_SCL)