diff options
| author | iabdalkader <i.abdalkader@gmail.com> | 2021-12-10 01:27:45 +0200 |
|---|---|---|
| committer | Damien George <damien@micropython.org> | 2021-12-14 14:59:39 +1100 |
| commit | f21c5655835ba3703deeb1f0fa375d6a706b03cc (patch) | |
| tree | a2334ac2cec5803a534bd3a8be74f686b05ee565 | |
| parent | 5adb1fa40e95d938a713a3ed9a3b80615edf90fa (diff) | |
rp2/machine_uart: Handle and clear UART RX timeout IRQ.
The pico-sdk 1.3.0 update in 97a7cc243b028833bdcb8ce0bc19b2bce7545851
introduced a change that broke RP2 Bluetooth UART, and possibly UART in
general, which stops working right after UART is initialized. The commit
raspberrypi/pico-sdk@2622e9b enables the UART receive timeout (RTIM) IRQ,
which is asserted when the receive FIFO is not empty, and no more
characters are received for a period of time.
This commit makes sure the RTIM IRQ is handled and cleared in
uart_service_interrupt.
| -rw-r--r-- | ports/rp2/machine_uart.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/ports/rp2/machine_uart.c b/ports/rp2/machine_uart.c index a8ec149f4..887954276 100644 --- a/ports/rp2/machine_uart.c +++ b/ports/rp2/machine_uart.c @@ -126,7 +126,7 @@ STATIC void uart_fill_tx_fifo(machine_uart_obj_t *self) { } STATIC inline void uart_service_interrupt(machine_uart_obj_t *self) { - if (uart_get_hw(self->uart)->mis & UART_UARTMIS_RXMIS_BITS) { // rx interrupt? + if (uart_get_hw(self->uart)->mis & (UART_UARTMIS_RXMIS_BITS | UART_UARTMIS_RTMIS_BITS)) { // rx interrupt? // clear all interrupt bits but tx uart_get_hw(self->uart)->icr = UART_UARTICR_BITS & (~UART_UARTICR_TXIC_BITS); if (!self->read_lock) { |