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nrf/uart: Add support for UARTE (EasyDMA).

This commit is contained in:
Glenn Ruben Bakke 2018-12-23 16:31:23 +01:00
parent 02a8c31eef
commit c561ae61a1
1 changed files with 42 additions and 0 deletions
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42
ports/nrf/modules/machine/uart.c
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@ -44,7 +44,12 @@
#include "mpconfigboard.h"
#include "nrf.h"
#include "mphalport.h"
#if NRFX_UART_ENABLED
#include "nrfx_uart.h"
#else
#include "nrfx_uarte.h"
#endif
#if MICROPY_PY_MACHINE_UART
@ -56,6 +61,40 @@ typedef struct _machine_hard_uart_buf_t {
volatile ringbuf_t rx_ringbuf;
} machine_hard_uart_buf_t;
#if NRFX_UARTE_ENABLED
#define nrfx_uart_t nrfx_uarte_t
#define nrfx_uart_config_t nrfx_uarte_config_t
#define nrfx_uart_rx nrfx_uarte_rx
#define nrfx_uart_tx nrfx_uarte_tx
#define nrfx_uart_tx_in_progress nrfx_uarte_tx_in_progress
#define nrfx_uart_init nrfx_uarte_init
#define nrfx_uart_event_t nrfx_uarte_event_t
#define NRFX_UART_INSTANCE NRFX_UARTE_INSTANCE
#define NRF_UART_HWFC_ENABLED NRF_UARTE_HWFC_ENABLED
#define NRF_UART_HWFC_DISABLED NRF_UARTE_HWFC_DISABLED
#define NRF_UART_PARITY_EXCLUDED NRF_UARTE_PARITY_EXCLUDED
#define NRFX_UART_EVT_RX_DONE NRFX_UARTE_EVT_RX_DONE
#define NRF_UART_BAUDRATE_1200 NRF_UARTE_BAUDRATE_1200
#define NRF_UART_BAUDRATE_2400 NRF_UARTE_BAUDRATE_2400
#define NRF_UART_BAUDRATE_4800 NRF_UARTE_BAUDRATE_4800
#define NRF_UART_BAUDRATE_9600 NRF_UARTE_BAUDRATE_9600
#define NRF_UART_BAUDRATE_14400 NRF_UARTE_BAUDRATE_14400
#define NRF_UART_BAUDRATE_19200 NRF_UARTE_BAUDRATE_19200
#define NRF_UART_BAUDRATE_28800 NRF_UARTE_BAUDRATE_28800
#define NRF_UART_BAUDRATE_38400 NRF_UARTE_BAUDRATE_38400
#define NRF_UART_BAUDRATE_57600 NRF_UARTE_BAUDRATE_57600
#define NRF_UART_BAUDRATE_76800 NRF_UARTE_BAUDRATE_76800
#define NRF_UART_BAUDRATE_115200 NRF_UARTE_BAUDRATE_115200
#define NRF_UART_BAUDRATE_230400 NRF_UARTE_BAUDRATE_230400
#define NRF_UART_BAUDRATE_250000 NRF_UARTE_BAUDRATE_250000
#define NRF_UART_BAUDRATE_1000000 NRF_UARTE_BAUDRATE_1000000
#endif
typedef struct _machine_hard_uart_obj_t {
mp_obj_base_t base;
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
// Enable event callback and start asynchronous receive
nrfx_uart_init(self->p_uart, &config, uart_event_handler);
nrfx_uart_rx(self->p_uart, &self->buf->rx_buf[0], 1);
#if NRFX_UART_ENABLED
nrfx_uart_rx_enable(self->p_uart);
#endif
return MP_OBJ_FROM_PTR(self);
}