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micropython/ports/nrf/mphalport.c

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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2015 Glenn Ruben Bakke
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <string.h>
#include "py/mpstate.h"
#include "py/mphal.h"
#include "py/mperrno.h"
#include "uart.h"
#include "nrfx_errors.h"
#include "nrfx_config.h"
// this table converts from HAL_StatusTypeDef to POSIX errno
const byte mp_hal_status_to_errno_table[4] = {
[HAL_OK] = 0,
[HAL_ERROR] = MP_EIO,
[HAL_BUSY] = MP_EBUSY,
[HAL_TIMEOUT] = MP_ETIMEDOUT,
};
NORETURN void mp_hal_raise(HAL_StatusTypeDef status) {
nlr_raise(mp_obj_new_exception_arg1(&mp_type_OSError, MP_OBJ_NEW_SMALL_INT(mp_hal_status_to_errno_table[status])));
}
#if !MICROPY_KBD_EXCEPTION
void mp_hal_set_interrupt_char(int c) {
}
#endif
#if !MICROPY_PY_BLE_NUS
int mp_hal_stdin_rx_chr(void) {
for (;;) {
if (MP_STATE_PORT(board_stdio_uart) != NULL && uart_rx_any(MP_STATE_PORT(board_stdio_uart))) {
return uart_rx_char(MP_STATE_PORT(board_stdio_uart));
}
}
return 0;
}
void mp_hal_stdout_tx_strn(const char *str, mp_uint_t len) {
if (MP_STATE_PORT(board_stdio_uart) != NULL) {
uart_tx_strn(MP_STATE_PORT(board_stdio_uart), str, len);
}
}
void mp_hal_stdout_tx_strn_cooked(const char *str, mp_uint_t len) {
if (MP_STATE_PORT(board_stdio_uart) != NULL) {
uart_tx_strn_cooked(MP_STATE_PORT(board_stdio_uart), str, len);
}
}
#endif
void mp_hal_stdout_tx_str(const char *str) {
mp_hal_stdout_tx_strn(str, strlen(str));
}
void mp_hal_delay_us(mp_uint_t us)
{
if (us == 0) {
return;
}
register uint32_t delay __ASM ("r0") = us;
__ASM volatile (
#ifdef NRF51
".syntax unified\n"
#endif
"1:\n"
" SUBS %0, %0, #1\n"
" NOP\n"
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#ifdef NRF52
" NOP\n"
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#endif
" BNE 1b\n"
: "+r" (delay));
}
void mp_hal_delay_ms(mp_uint_t ms)
{
for (mp_uint_t i = 0; i < ms; i++)
{
mp_hal_delay_us(999);
}
}
#if defined(NRFX_LOG_ENABLED) && (NRFX_LOG_ENABLED == 1)
static const char nrfx_error_unknown[1] = "";
static const char nrfx_error_success[] = "NRFX_SUCCESS";
static const char nrfx_error_internal[] = "NRFX_ERROR_INTERNAL";
static const char nrfx_error_no_mem[] = "NRFX_ERROR_NO_MEM";
static const char nrfx_error_not_supported[] = "NRFX_ERROR_NOT_SUPPORTED";
static const char nrfx_error_invalid_param[] = "NRFX_ERROR_INVALID_PARAM";
static const char nrfx_error_invalid_state[] = "NRFX_ERROR_INVALID_STATE";
static const char nrfx_error_invalid_length[] = "NRFX_ERROR_INVALID_LENGTH";
static const char nrfx_error_timeout[] = "NRFX_ERROR_TIMEOUT";
static const char nrfx_error_forbidden[] = "NRFX_ERROR_FORBIDDEN";
static const char nrfx_error_null[] = "NRFX_ERROR_NULL";
static const char nrfx_error_invalid_addr[] = "NRFX_ERROR_INVALID_ADDR";
static const char nrfx_error_busy[] = "NRFX_ERROR_BUSY";
static const char nrfx_error_already_initalized[] = "NRFX_ERROR_ALREADY_INITIALIZED";
static const char * nrfx_error_strings[13] = {
nrfx_error_success,
nrfx_error_internal,
nrfx_error_no_mem,
nrfx_error_not_supported,
nrfx_error_invalid_param,
nrfx_error_invalid_state,
nrfx_error_invalid_length,
nrfx_error_timeout,
nrfx_error_forbidden,
nrfx_error_null,
nrfx_error_invalid_addr,
nrfx_error_busy,
nrfx_error_already_initalized
};
static const char nrfx_drv_error_twi_err_overrun[] = "NRFX_ERROR_DRV_TWI_ERR_OVERRUN";
static const char nrfx_drv_error_twi_err_anack[] = "NRFX_ERROR_DRV_TWI_ERR_ANACK";
static const char nrfx_drv_error_twi_err_dnack[] = "NRFX_ERROR_DRV_TWI_ERR_DNACK";
static const char * nrfx_drv_error_strings[3] = {
nrfx_drv_error_twi_err_overrun,
nrfx_drv_error_twi_err_anack,
nrfx_drv_error_twi_err_dnack
};
const char * nrfx_error_code_lookup(uint32_t err_code) {
if (err_code >= NRFX_ERROR_BASE_NUM && err_code <= NRFX_ERROR_BASE_NUM + 13) {
return nrfx_error_strings[err_code - NRFX_ERROR_BASE_NUM];
} else if (err_code >= NRFX_ERROR_DRIVERS_BASE_NUM && err_code <= NRFX_ERROR_DRIVERS_BASE_NUM + 3) {
return nrfx_drv_error_strings[err_code - NRFX_ERROR_DRIVERS_BASE_NUM];
}
return nrfx_error_unknown;
}
#endif // NRFX_LOG_ENABLED
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