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Merge pull request #5834 from adafruit/rpi-uart-claim-later

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raspberrypi: Claim UART after checking pins
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Scott Shawcroft 2022-01-12 10:46:39 -08:00 committed by GitHub
commit 46c0436b1b
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1 changed files with 3 additions and 3 deletions
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6
ports/raspberrypi/common-hal/busio/UART.c
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@ -120,14 +120,14 @@ void common_hal_busio_uart_construct(busio_uart_obj_t *self,
if (uart_status[uart_id] != STATUS_FREE) { if (uart_status[uart_id] != STATUS_FREE) {
mp_raise_RuntimeError(translate("All UART peripherals are in use")); mp_raise_RuntimeError(translate("All UART peripherals are in use"));
} else {
uart_status[uart_id] = STATUS_BUSY;
} }
// These may raise exceptions if pins are already in use.
self->tx_pin = pin_init(uart_id, tx, 0); self->tx_pin = pin_init(uart_id, tx, 0);
self->rx_pin = pin_init(uart_id, rx, 1); self->rx_pin = pin_init(uart_id, rx, 1);
self->cts_pin = pin_init(uart_id, cts, 2); self->cts_pin = pin_init(uart_id, cts, 2);
self->rts_pin = pin_init(uart_id, rts, 3); self->rts_pin = pin_init(uart_id, rts, 3);
uart_status[uart_id] = STATUS_BUSY;
self->uart = UART_INST(uart_id); self->uart = UART_INST(uart_id);
self->uart_id = uart_id; self->uart_id = uart_id;