You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 
circuitpython/ports/esp8266/esp_mphal.c

207 lines
5.6 KiB

/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2014 Damien P. George
*
* 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 <stdio.h>
#include "ets_sys.h"
#include "etshal.h"
#include "uart.h"
#include "esp_mphal.h"
#include "user_interface.h"
#include "ets_alt_task.h"
#include "py/runtime.h"
#include "extmod/misc.h"
#include "lib/utils/pyexec.h"
STATIC byte stdin_ringbuf_array[256];
ringbuf_t stdin_ringbuf = {stdin_ringbuf_array, sizeof(stdin_ringbuf_array), 0, 0};
void mp_hal_debug_tx_strn_cooked(void *env, const char *str, uint32_t len);
const mp_print_t mp_debug_print = {NULL, mp_hal_debug_tx_strn_cooked};
int uart_attached_to_dupterm;
void mp_hal_init(void) {
//ets_wdt_disable(); // it's a pain while developing
mp_hal_rtc_init();
uart_init(UART_BIT_RATE_115200, UART_BIT_RATE_115200);
uart_attached_to_dupterm = 0;
}
void mp_hal_delay_us(uint32_t us) {
uint32_t start = system_get_time();
while (system_get_time() - start < us) {
ets_event_poll();
}
}
uint32_t mp_hal_get_cpu_freq(void) {
return system_get_cpu_freq() * 1000000;
}
int mp_hal_stdin_rx_chr(void) {
for (;;) {
int c = ringbuf_get(&stdin_ringbuf);
if (c != -1) {
return c;
}
#if 0
// Idles CPU but need more testing before enabling
if (!ets_loop_iter()) {
asm("waiti 0");
}
#else
mp_hal_delay_us(1);
#endif
}
}
#if 0
void mp_hal_debug_str(const char *str) {
while (*str) {
uart_tx_one_char(UART0, *str++);
}
uart_flush(UART0);
}
#endif
void mp_hal_stdout_tx_str(const char *str) {
mp_uos_dupterm_tx_strn(str, strlen(str));
}
void mp_hal_stdout_tx_strn(const char *str, uint32_t len) {
mp_uos_dupterm_tx_strn(str, len);
}
void mp_hal_stdout_tx_strn_cooked(const char *str, uint32_t len) {
const char *last = str;
while (len--) {
if (*str == '\n') {
if (str > last) {
mp_uos_dupterm_tx_strn(last, str - last);
}
mp_uos_dupterm_tx_strn("\r\n", 2);
++str;
last = str;
} else {
++str;
}
}
if (str > last) {
mp_uos_dupterm_tx_strn(last, str - last);
}
}
void mp_hal_debug_tx_strn_cooked(void *env, const char *str, uint32_t len) {
(void)env;
while (len--) {
if (*str == '\n') {
uart_tx_one_char(UART0, '\r');
}
uart_tx_one_char(UART0, *str++);
}
}
uint32_t mp_hal_ticks_ms(void) {
return ((uint64_t)system_time_high_word << 32 | (uint64_t)system_get_time()) / 1000;
}
uint32_t mp_hal_ticks_us(void) {
return system_get_time();
}
void mp_hal_delay_ms(uint32_t delay) {
mp_hal_delay_us(delay * 1000);
}
void ets_event_poll(void) {
ets_loop_iter();
mp_handle_pending();
}
void __assert_func(const char *file, int line, const char *func, const char *expr) {
printf("assert:%s:%d:%s: %s\n", file, line, func, expr);
nlr_raise(mp_obj_new_exception_msg(&mp_type_AssertionError,
"C-level assert"));
}
void mp_hal_signal_input(void) {
#if MICROPY_REPL_EVENT_DRIVEN
system_os_post(UART_TASK_ID, 0, 0);
#endif
}
STATIC void dupterm_task_handler(os_event_t *evt) {
static byte lock;
if (lock) {
return;
}
lock = 1;
while (1) {
int c = mp_uos_dupterm_rx_chr();
if (c < 0) {
break;
}
ringbuf_put(&stdin_ringbuf, c);
}
mp_hal_signal_input();
lock = 0;
}
STATIC os_event_t dupterm_evt_queue[4];
void dupterm_task_init() {
system_os_task(dupterm_task_handler, DUPTERM_TASK_ID, dupterm_evt_queue, MP_ARRAY_SIZE(dupterm_evt_queue));
}
void mp_hal_signal_dupterm_input(void) {
system_os_post(DUPTERM_TASK_ID, 0, 0);
}
// Get pointer to esf_buf bookkeeping structure
void *ets_get_esf_buf_ctlblk(void) {
// Get literal ptr before start of esf_rx_buf_alloc func
extern void *esf_rx_buf_alloc();
return ((void**)esf_rx_buf_alloc)[-1];
}
// Get number of esf_buf free buffers of given type, as encoded by index
// idx 0 corresponds to buf types 1, 2; 1 - 4; 2 - 5; 3 - 7; 4 - 8
// Only following buf types appear to be used:
// 1 - tx buffer, 5 - management frame tx buffer; 8 - rx buffer
int ets_esf_free_bufs(int idx) {
uint32_t *p = ets_get_esf_buf_ctlblk();
uint32_t *b = (uint32_t*)p[idx];
int cnt = 0;
while (b) {
b = (uint32_t*)b[0x20 / 4];
cnt++;
}
return cnt;
}
extern int mp_stream_errno;
int *__errno() {
return &mp_stream_errno;
}