128 lines
4.1 KiB
C
128 lines
4.1 KiB
C
/*
|
|
* This file is part of the MicroPython project, http://micropython.org/
|
|
*
|
|
* The MIT License (MIT)
|
|
*
|
|
* Copyright (c) 2016 Scott Shawcroft
|
|
*
|
|
* 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 "lib/mp-readline/readline.h"
|
|
#include "lib/utils/interrupt_char.h"
|
|
#include "py/mphal.h"
|
|
#include "py/mpstate.h"
|
|
#include "py/runtime.h"
|
|
#include "py/smallint.h"
|
|
#include "shared-bindings/microcontroller/__init__.h"
|
|
#include "shared-bindings/time/__init__.h"
|
|
#include "supervisor/shared/autoreload.h"
|
|
|
|
#include "hal/include/hal_atomic.h"
|
|
#include "hal/include/hal_delay.h"
|
|
#include "hal/include/hal_gpio.h"
|
|
#include "hal/include/hal_sleep.h"
|
|
#include "sam.h"
|
|
|
|
#include "mpconfigboard.h"
|
|
#include "mphalport.h"
|
|
#include "reset.h"
|
|
#include "tick.h"
|
|
#include "usb.h"
|
|
|
|
extern struct usart_module usart_instance;
|
|
extern uint32_t common_hal_mcu_processor_get_frequency(void);
|
|
|
|
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 (usb_bytes_available()) {
|
|
#ifdef MICROPY_HW_LED_RX
|
|
gpio_toggle_pin_level(MICROPY_HW_LED_RX);
|
|
#endif
|
|
return usb_read();
|
|
}
|
|
}
|
|
}
|
|
|
|
void mp_hal_stdout_tx_strn(const char *str, size_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
|
|
|
|
usb_write(str, len);
|
|
}
|
|
|
|
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.
|
|
}
|
|
}
|
|
|
|
// Use mp_hal_delay_us() for timing of less than 1ms.
|
|
// Do a simple timing loop to wait for a certain number of microseconds.
|
|
// Can be used when interrupts are disabled, which makes tick_delay() unreliable.
|
|
//
|
|
// Testing done at 48 MHz on SAMD21 and 120 MHz on SAMD51, multiplication and division cancel out.
|
|
// But get the frequency just in case.
|
|
#ifdef SAMD21
|
|
#define DELAY_LOOP_ITERATIONS_PER_US ( (10U*48000000U) / common_hal_mcu_processor_get_frequency())
|
|
#endif
|
|
#ifdef SAMD51
|
|
#define DELAY_LOOP_ITERATIONS_PER_US ( (30U*120000000U) / common_hal_mcu_processor_get_frequency())
|
|
#endif
|
|
|
|
void mp_hal_delay_us(mp_uint_t delay) {
|
|
for (uint32_t i = delay*DELAY_LOOP_ITERATIONS_PER_US; i > 0; i--) {
|
|
asm volatile("nop");
|
|
}
|
|
}
|
|
|
|
void mp_hal_disable_all_interrupts(void) {
|
|
common_hal_mcu_disable_interrupts();
|
|
}
|
|
|
|
void mp_hal_enable_all_interrupts(void) {
|
|
common_hal_mcu_enable_interrupts();
|
|
}
|