262 lines
7.4 KiB
C
262 lines
7.4 KiB
C
/*
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* This file is part of the Micro Python project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2014 Damien P. George
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <stdio.h>
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#include "ets_sys.h"
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#include "etshal.h"
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#include "uart.h"
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#include "esp_mphal.h"
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#include "user_interface.h"
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#include "ets_alt_task.h"
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#include "py/obj.h"
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#include "py/mpstate.h"
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#include "extmod/misc.h"
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#include "lib/utils/pyexec.h"
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extern void ets_wdt_disable(void);
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extern void wdt_feed(void);
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extern void ets_delay_us();
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STATIC byte input_buf_array[256];
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ringbuf_t input_buf = {input_buf_array, sizeof(input_buf_array)};
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void mp_hal_debug_tx_strn_cooked(void *env, const char *str, uint32_t len);
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const mp_print_t mp_debug_print = {NULL, mp_hal_debug_tx_strn_cooked};
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void mp_hal_init(void) {
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ets_wdt_disable(); // it's a pain while developing
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mp_hal_rtc_init();
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uart_init(UART_BIT_RATE_115200, UART_BIT_RATE_115200);
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}
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void mp_hal_delay_us(uint32_t us) {
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uint32_t start = system_get_time();
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while (system_get_time() - start < us) {
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ets_event_poll();
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}
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}
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int mp_hal_stdin_rx_chr(void) {
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for (;;) {
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int c = ringbuf_get(&input_buf);
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if (c != -1) {
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return c;
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}
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mp_hal_delay_us(1);
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}
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}
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void mp_hal_stdout_tx_char(char c) {
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uart_tx_one_char(UART0, c);
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mp_uos_dupterm_tx_strn(&c, 1);
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}
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#if 0
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void mp_hal_debug_str(const char *str) {
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while (*str) {
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uart_tx_one_char(UART0, *str++);
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}
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uart_flush(UART0);
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}
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#endif
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void mp_hal_stdout_tx_str(const char *str) {
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while (*str) {
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mp_hal_stdout_tx_char(*str++);
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}
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}
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void mp_hal_stdout_tx_strn(const char *str, uint32_t len) {
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while (len--) {
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mp_hal_stdout_tx_char(*str++);
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}
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}
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void mp_hal_stdout_tx_strn_cooked(const char *str, uint32_t len) {
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while (len--) {
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if (*str == '\n') {
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mp_hal_stdout_tx_char('\r');
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}
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mp_hal_stdout_tx_char(*str++);
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}
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}
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void mp_hal_debug_tx_strn_cooked(void *env, const char *str, uint32_t len) {
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(void)env;
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while (len--) {
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if (*str == '\n') {
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uart_tx_one_char(UART0, '\r');
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}
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uart_tx_one_char(UART0, *str++);
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}
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}
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uint32_t mp_hal_ticks_ms(void) {
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return system_get_time() / 1000;
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}
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uint32_t mp_hal_ticks_us(void) {
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return system_get_time();
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}
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void mp_hal_delay_ms(uint32_t delay) {
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mp_hal_delay_us(delay * 1000);
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}
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void mp_hal_set_interrupt_char(int c) {
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if (c != -1) {
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mp_obj_exception_clear_traceback(MP_STATE_PORT(mp_kbd_exception));
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}
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extern int interrupt_char;
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interrupt_char = c;
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}
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void ets_event_poll(void) {
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ets_loop_iter();
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if (MP_STATE_VM(mp_pending_exception) != NULL) {
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mp_obj_t obj = MP_STATE_VM(mp_pending_exception);
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MP_STATE_VM(mp_pending_exception) = MP_OBJ_NULL;
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nlr_raise(obj);
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}
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}
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void __assert_func(const char *file, int line, const char *func, const char *expr) {
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printf("assert:%s:%d:%s: %s\n", file, line, func, expr);
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nlr_raise(mp_obj_new_exception_msg(&mp_type_AssertionError,
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"C-level assert"));
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}
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void mp_hal_signal_input(void) {
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#if MICROPY_REPL_EVENT_DRIVEN
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system_os_post(UART_TASK_ID, 0, 0);
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#endif
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}
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static int call_dupterm_read(void) {
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if (MP_STATE_PORT(term_obj) == NULL) {
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return -1;
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}
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nlr_buf_t nlr;
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if (nlr_push(&nlr) == 0) {
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mp_obj_t read_m[3];
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mp_load_method(MP_STATE_PORT(term_obj), MP_QSTR_read, read_m);
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read_m[2] = MP_OBJ_NEW_SMALL_INT(1);
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mp_obj_t res = mp_call_method_n_kw(1, 0, read_m);
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if (res == mp_const_none) {
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nlr_pop();
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return -2;
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}
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mp_buffer_info_t bufinfo;
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mp_get_buffer_raise(res, &bufinfo, MP_BUFFER_READ);
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if (bufinfo.len == 0) {
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mp_uos_deactivate("dupterm: EOF received, deactivating\n", MP_OBJ_NULL);
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nlr_pop();
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return -1;
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}
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nlr_pop();
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if (*(byte*)bufinfo.buf == interrupt_char) {
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mp_keyboard_interrupt();
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return -2;
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}
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return *(byte*)bufinfo.buf;
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} else {
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mp_uos_deactivate("dupterm: Exception in read() method, deactivating: ", nlr.ret_val);
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}
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return -1;
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}
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STATIC void dupterm_task_handler(os_event_t *evt) {
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static byte lock;
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if (lock) {
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return;
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}
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lock = 1;
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while (1) {
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int c = call_dupterm_read();
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if (c < 0) {
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break;
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}
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ringbuf_put(&input_buf, c);
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}
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mp_hal_signal_input();
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lock = 0;
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}
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STATIC os_event_t dupterm_evt_queue[4];
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void dupterm_task_init() {
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system_os_task(dupterm_task_handler, DUPTERM_TASK_ID, dupterm_evt_queue, MP_ARRAY_SIZE(dupterm_evt_queue));
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}
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void mp_hal_signal_dupterm_input(void) {
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system_os_post(DUPTERM_TASK_ID, 0, 0);
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}
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void mp_hal_pin_config_od(mp_hal_pin_obj_t pin_id) {
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const pyb_pin_obj_t *pin = &pyb_pin_obj[pin_id];
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if (pin->phys_port == 16) {
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// configure GPIO16 as input with output register holding 0
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WRITE_PERI_REG(PAD_XPD_DCDC_CONF, (READ_PERI_REG(PAD_XPD_DCDC_CONF) & 0xffffffbc) | 1);
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WRITE_PERI_REG(RTC_GPIO_CONF, READ_PERI_REG(RTC_GPIO_CONF) & ~1);
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WRITE_PERI_REG(RTC_GPIO_ENABLE, (READ_PERI_REG(RTC_GPIO_ENABLE) & ~1)); // input
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WRITE_PERI_REG(RTC_GPIO_OUT, (READ_PERI_REG(RTC_GPIO_OUT) & ~1)); // out=0
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return;
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}
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ETS_GPIO_INTR_DISABLE();
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PIN_FUNC_SELECT(pin->periph, pin->func);
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GPIO_REG_WRITE(GPIO_PIN_ADDR(GPIO_ID_PIN(pin->phys_port)),
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GPIO_REG_READ(GPIO_PIN_ADDR(GPIO_ID_PIN(pin->phys_port)))
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| GPIO_PIN_PAD_DRIVER_SET(GPIO_PAD_DRIVER_ENABLE)); // open drain
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GPIO_REG_WRITE(GPIO_ENABLE_ADDRESS,
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GPIO_REG_READ(GPIO_ENABLE_ADDRESS) | (1 << pin->phys_port));
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ETS_GPIO_INTR_ENABLE();
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}
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// Get pointer to esf_buf bookkeeping structure
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void *ets_get_esf_buf_ctlblk(void) {
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// Get literal ptr before start of esf_rx_buf_alloc func
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extern void *esf_rx_buf_alloc();
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return ((void**)esf_rx_buf_alloc)[-1];
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}
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// Get number of esf_buf free buffers of given type, as encoded by index
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// idx 0 corresponds to buf types 1, 2; 1 - 4; 2 - 5; 3 - 7; 4 - 8
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// Only following buf types appear to be used:
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// 1 - tx buffer, 5 - management frame tx buffer; 8 - rx buffer
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int ets_esf_free_bufs(int idx) {
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uint32_t *p = ets_get_esf_buf_ctlblk();
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uint32_t *b = (uint32_t*)p[idx];
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int cnt = 0;
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while (b) {
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b = (uint32_t*)b[0x20 / 4];
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cnt++;
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}
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return cnt;
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}
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