122 lines
3.3 KiB
C
122 lines
3.3 KiB
C
/* Serial terminal example
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* UART RX is interrupt driven
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* Implements a simple GPIO terminal for setting and clearing GPIOs
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*
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* This sample code is in the public domain.
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*/
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#include <stdint.h>
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#include <sys/types.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include <esp8266.h>
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#include <esp/uart.h>
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#include <stdio.h>
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#include "FreeRTOS.h"
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#include "task.h"
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#define MAX_ARGC (10)
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static void cmd_on(uint32_t argc, char *argv[])
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{
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if (argc >= 2) {
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for(int i=1; i<argc; i++) {
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uint8_t gpio_num = atoi(argv[i]);
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gpio_enable(gpio_num, GPIO_OUTPUT);
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gpio_write(gpio_num, true);
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printf("On %d\n", gpio_num);
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}
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} else {
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printf("Error: missing gpio number.\n");
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}
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}
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static void cmd_off(uint32_t argc, char *argv[])
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{
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if (argc >= 2) {
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for(int i=1; i<argc; i++) {
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uint8_t gpio_num = atoi(argv[i]);
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gpio_enable(gpio_num, GPIO_OUTPUT);
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gpio_write(gpio_num, false);
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printf("Off %d\n", gpio_num);
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}
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} else {
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printf("Error: missing gpio number.\n");
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}
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}
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static void cmd_help(uint32_t argc, char *argv[])
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{
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printf("on <gpio number> [ <gpio number>]+ Set gpio to 1\n");
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printf("off <gpio number> [ <gpio number>]+ Set gpio to 0\n");
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printf("sleep Take a nap\n");
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printf("\nExample:\n");
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printf(" on 0<enter> switches on gpio 0\n");
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printf(" on 0 2 4<enter> switches on gpios 0, 2 and 4\n");
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}
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static void cmd_sleep(uint32_t argc, char *argv[])
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{
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printf("Type away while I take a 2 second nap (ie. let you test the UART HW FIFO\n");
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vTaskDelay(2000 / portTICK_PERIOD_MS);
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}
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static void handle_command(char *cmd)
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{
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char *argv[MAX_ARGC];
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int argc = 1;
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char *temp, *rover;
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memset((void*) argv, 0, sizeof(argv));
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argv[0] = cmd;
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rover = cmd;
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// Split string "<command> <argument 1> <argument 2> ... <argument N>"
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// into argv, argc style
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while(argc < MAX_ARGC && (temp = strstr(rover, " "))) {
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rover = &(temp[1]);
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argv[argc++] = rover;
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*temp = 0;
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}
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if (strlen(argv[0]) > 0) {
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if (strcmp(argv[0], "help") == 0) cmd_help(argc, argv);
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else if (strcmp(argv[0], "on") == 0) cmd_on(argc, argv);
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else if (strcmp(argv[0], "off") == 0) cmd_off(argc, argv);
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else if (strcmp(argv[0], "sleep") == 0) cmd_sleep(argc, argv);
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else printf("Unknown command %s, try 'help'\n", argv[0]);
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}
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}
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static void gpiomon()
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{
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char ch;
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char cmd[81];
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int i = 0;
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printf("\n\n\nWelcome to gpiomon. Type 'help<enter>' for, well, help\n");
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printf("%% ");
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fflush(stdout); // stdout is line buffered
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while(1) {
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if (read(0, (void*)&ch, 1)) { // 0 is stdin
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printf("%c", ch);
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fflush(stdout);
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if (ch == '\n' || ch == '\r') {
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cmd[i] = 0;
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i = 0;
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printf("\n");
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handle_command((char*) cmd);
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printf("%% ");
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fflush(stdout);
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} else {
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if (i < sizeof(cmd)) cmd[i++] = ch;
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}
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} else {
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printf("You will never see this print as read(...) is blocking\n");
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}
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}
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}
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void user_init(void)
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{
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uart_set_baud(0, 115200);
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gpiomon();
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}
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