circuitpython/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
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* Copyright (c) 2018 Artur Pacholec
*
* 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>
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#include "py/mphal.h"
#include "py/mpstate.h"
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#include "py/gc.h"
#if (MICROPY_PY_BLE_NUS == 0)
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#if !defined( NRF52840_XXAA)
int mp_hal_stdin_rx_chr(void) {
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uint8_t data;
nrfx_uarte_rx(&serial_instance, &data, 1);
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return data;
}
bool mp_hal_stdin_any(void) {
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return nrf_uarte_event_check(serial_instance.p_reg, NRF_UARTE_EVENT_RXDRDY);
}
void mp_hal_stdout_tx_strn(const char *str, mp_uint_t len) {
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if (len == 0) {
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return;
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}
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// EasyDMA can only access SRAM
uint8_t * tx_buf = (uint8_t*) str;
if ( !nrfx_is_in_ram(str) ) {
tx_buf = (uint8_t *) gc_alloc(len, false, false);
memcpy(tx_buf, str, len);
}
nrfx_uarte_tx(&serial_instance, tx_buf, len);
if ( !nrfx_is_in_ram(str) ) {
gc_free(tx_buf);
}
}
#else
#include "tusb.h"
int mp_hal_stdin_rx_chr(void) {
for (;;) {
#ifdef MICROPY_VM_HOOK_LOOP
MICROPY_VM_HOOK_LOOP
#endif
// if (reload_requested) {
// return CHAR_CTRL_D;
// }
if (tud_cdc_available()) {
#ifdef MICROPY_HW_LED_RX
gpio_toggle_pin_level(MICROPY_HW_LED_RX);
#endif
return tud_cdc_read_char();
}
}
return 0;
}
bool mp_hal_stdin_any(void) {
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return tud_cdc_available() > 0;
}
void mp_hal_stdout_tx_strn(const char *str, mp_uint_t len) {
#ifdef MICROPY_HW_LED_TX
gpio_toggle_pin_level(MICROPY_HW_LED_TX);
#endif
#ifdef CIRCUITPY_BOOT_OUTPUT_FILE
if (boot_output_file != NULL) {
UINT bytes_written = 0;
f_write(boot_output_file, str, len, &bytes_written);
}
#endif
tud_cdc_write(str, len);
}
#endif // USB
#endif // NUS
/*------------------------------------------------------------------*/
/* delay
*------------------------------------------------------------------*/
void mp_hal_delay_ms(mp_uint_t delay) {
uint64_t start_tick = ticks_ms;
uint64_t duration = 0;
while (duration < delay) {
#ifdef MICROPY_VM_HOOK_LOOP
MICROPY_VM_HOOK_LOOP
#endif
// Check to see if we've been CTRL-Ced by autoreload or the user.
if(MP_STATE_VM(mp_pending_exception) == MP_OBJ_FROM_PTR(&MP_STATE_VM(mp_kbd_exception))) {
break;
}
duration = (ticks_ms - start_tick);
// TODO(tannewt): Go to sleep for a little while while we wait.
}
}