8000 nrf/uart: Add support for UARTE (EasyDMA). · jimmo/micropython@c561ae6 · GitHub
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nrf/uart: Add support for UARTE (EasyDMA).
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  • ports/nrf/modules/machine

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‎ports/nrf/modules/machine/uart.c

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Original file line numberDiff line numberDiff line change
@@ -44,7 +44,12 @@
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#include "mpconfigboard.h"
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#include "nrf.h"
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#include "mphalport.h"
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#if NRFX_UART_ENABLED
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#include "nrfx_uart.h"
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#else
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#include "nrfx_uarte.h"
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#endif
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#if MICROPY_PY_MACHINE_UART
@@ -56,6 +61,40 @@ typedef struct _machine_hard_uart_buf_t {
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volatile ringbuf_t rx_ringbuf;
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} machine_hard_uart_buf_t;
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#if NRFX_UARTE_ENABLED
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#define nrfx_uart_t nrfx_uarte_t
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#define nrfx_uart_config_t nrfx_uarte_config_t
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#define nrfx_uart_rx nrfx_uarte_rx
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#define nrfx_uart_tx nrfx_uarte_tx
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#define nrfx_uart_tx_in_progress nrfx_uarte_tx_in_progress
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#define nrfx_uart_init nrfx_uarte_init
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#define nrfx_uart_event_t nrfx_uarte_event_t
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#define NRFX_UART_INSTANCE NRFX_UARTE_INSTANCE
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#define NRF_UART_HWFC_ENABLED NRF_UARTE_HWFC_ENABLED
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#define NRF_UART_HWFC_DISABLED NRF_UARTE_HWFC_DISABLED
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#define NRF_UART_PARITY_EXCLUDED NRF_UARTE_PARITY_EXCLUDED
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#define NRFX_UART_EVT_RX_DONE NRFX_UARTE_EVT_RX_DONE
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#define NRF_UART_BAUDRATE_1200 NRF_UARTE_BAUDRATE_1200
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#define NRF_UART_BAUDRATE_2400 NRF_UARTE_BAUDRATE_2400
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#define NRF_UART_BAUDRATE_4800 NRF_UARTE_BAUDRATE_4800
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#define NRF_UART_BAUDRATE_9600 NRF_UARTE_BAUDRATE_9600
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#define NRF_UART_BAUDRATE_14400 NRF_UARTE_BAUDRATE_14400
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#define NRF_UART_BAUDRATE_19200 NRF_UARTE_BAUDRATE_19200
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#define NRF_UART_BAUDRATE_28800 NRF_UARTE_BAUDRATE_28800
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#define NRF_UART_BAUDRATE_38400 NRF_UARTE_BAUDRATE_38400
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#define NRF_UART_BAUDRATE_57600 NRF_UARTE_BAUDRATE_57600
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#define NRF_UART_BAUDRATE_76800 NRF_UARTE_BAUDRATE_76800
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#define NRF_UART_BAUDRATE_115200 NRF_UARTE_BAUDRATE_115200
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#define NRF_UART_BAUDRATE_230400 NRF_UARTE_BAUDRATE_230400
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#define NRF_UART_BAUDRATE_250000 NRF_UARTE_BAUDRATE_250000
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#define NRF_UART_BAUDRATE_1000000 NRF_UARTE_BAUDRATE_1000000
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#endif
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typedef struct _machine_hard_uart_obj_t {
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mp_obj_base_t base;
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const nrfx_uart_t * p_uart; // Driver instance
@@ -210,7 +249,10 @@ STATIC mp_obj_t machine_hard_uart_make_new(const mp_obj_type_t *type, size_t n_a
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// Enable event callback and start asynchronous receive
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nrfx_uart_init(self->p_uart, &config, uart_event_handler);
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nrfx_uart_rx(self->p_uart, &self->buf->rx_buf[0], 1);
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#if NRFX_UART_ENABLED
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nrfx_uart_rx_enable(self->p_uart);
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#endif
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return MP_OBJ_FROM_PTR(self);
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}

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