circuitpython/drivers/ninaw10/nina_wifi_bsp.c

154 lines
4.5 KiB
C

/*
* This file is part of the OpenMV project, https://openmv.io.
*
* The MIT License (MIT)
*
* Copyright (c) 2013-2021 Ibrahim Abdelkader <iabdalkader@openmv.io>
* Copyright (c) 2013-2021 Kwabena W. Agyeman <kwagyeman@openmv.io>
*
* 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.
*
* NINA-W10 driver BSP implementation.
*/
#include "py/mphal.h"
#if MICROPY_PY_NETWORK_NINAW10
#include <stdint.h>
#include <string.h>
#include "py/runtime.h"
#include "modmachine.h"
#include "extmod/machine_spi.h"
#include "mpconfigboard.h"
#include "nina_bsp.h"
#include "nina_wifi_drv.h"
#if NINA_DEBUG
#define debug_printf(...) mp_printf(&mp_plat_print, __VA_ARGS__)
#else
#define debug_printf(...)
#endif
int nina_bsp_init(void) {
mp_hal_pin_output(MICROPY_HW_NINA_GPIO1);
mp_hal_pin_input(MICROPY_HW_NINA_ACK);
mp_hal_pin_output(MICROPY_HW_NINA_RESET);
mp_hal_pin_output(MICROPY_HW_NINA_GPIO0);
// Reset module in WiFi mode
mp_hal_pin_write(MICROPY_HW_NINA_GPIO1, 1);
mp_hal_pin_write(MICROPY_HW_NINA_GPIO0, 1);
mp_hal_pin_write(MICROPY_HW_NINA_RESET, 0);
mp_hal_delay_ms(100);
mp_hal_pin_write(MICROPY_HW_NINA_RESET, 1);
mp_hal_delay_ms(750);
mp_hal_pin_write(MICROPY_HW_NINA_GPIO0, 0);
mp_hal_pin_input(MICROPY_HW_NINA_GPIO0);
// Initialize SPI.
mp_obj_t args[] = {
MP_OBJ_NEW_SMALL_INT(MICROPY_HW_WIFI_SPI_ID),
MP_OBJ_NEW_SMALL_INT(MICROPY_HW_WIFI_SPI_BAUDRATE),
};
MP_STATE_PORT(mp_wifi_spi) = MP_OBJ_TYPE_GET_SLOT(&machine_spi_type, make_new)((mp_obj_t)&machine_spi_type, 2, 0, args);
return 0;
}
int nina_bsp_deinit(void) {
mp_hal_pin_output(MICROPY_HW_NINA_GPIO1);
mp_hal_pin_write(MICROPY_HW_NINA_GPIO1, 1);
mp_hal_pin_output(MICROPY_HW_NINA_RESET);
mp_hal_pin_write(MICROPY_HW_NINA_RESET, 0);
mp_hal_delay_ms(100);
mp_hal_pin_output(MICROPY_HW_NINA_GPIO0);
mp_hal_pin_write(MICROPY_HW_NINA_GPIO0, 1);
return 0;
}
int nina_bsp_atomic_enter(void) {
#if MICROPY_ENABLE_SCHEDULER
mp_sched_lock();
#endif
return 0;
}
int nina_bsp_atomic_exit(void) {
#if MICROPY_ENABLE_SCHEDULER
mp_sched_unlock();
#endif
return 0;
}
int nina_bsp_read_irq(void) {
return mp_hal_pin_read(MICROPY_HW_NINA_GPIO0);
}
int nina_bsp_spi_slave_select(uint32_t timeout) {
// Wait for ACK to go low.
for (mp_uint_t start = mp_hal_ticks_ms(); mp_hal_pin_read(MICROPY_HW_NINA_ACK) == 1; mp_hal_delay_ms(1)) {
if (timeout && ((mp_hal_ticks_ms() - start) >= timeout)) {
return -1;
}
}
// Chip select.
mp_hal_pin_write(MICROPY_HW_NINA_GPIO1, 0);
// Wait for ACK to go high.
for (mp_uint_t start = mp_hal_ticks_ms(); mp_hal_pin_read(MICROPY_HW_NINA_ACK) == 0; mp_hal_delay_ms(1)) {
if ((mp_hal_ticks_ms() - start) >= 100) {
mp_hal_pin_write(MICROPY_HW_NINA_GPIO1, 1);
return -1;
}
}
return 0;
}
int nina_bsp_spi_slave_deselect(void) {
mp_hal_pin_write(MICROPY_HW_NINA_GPIO1, 1);
return 0;
}
int nina_bsp_spi_transfer(const uint8_t *tx_buf, uint8_t *rx_buf, uint32_t size) {
mp_obj_t mp_wifi_spi = MP_STATE_PORT(mp_wifi_spi);
((mp_machine_spi_p_t *)MP_OBJ_TYPE_GET_SLOT(&machine_spi_type, protocol))->transfer(mp_wifi_spi, size, tx_buf, rx_buf);
#if NINA_DEBUG
for (int i = 0; i < size; i++) {
if (tx_buf) {
debug_printf("0x%x ", tx_buf[i]);
} else {
debug_printf("0x%x ", rx_buf[i]);
}
}
#endif
return 0;
}
#endif // MICROPY_PY_NETWORK_NINAW10