Taras Popiv
Use STM32 platform, install FreeRTOS, implement UART CLI for next functionality: - light on LED for specified period in seconds, other commands are available while LED is ON. When after specified period led is off - notify user with text message on same console - set/get brightness for LED - return state of user button - enable/disable button monitoring, asynchronously monitor state of button and if it's state changed(pressed/unpressed) notify user with text message on same console - help CLI must be user friendly as much as possible. Result: you can connect device to PC and work with CLI
Diff: main.cpp
- Revision:
- 4:d4aeacb47955
- Parent:
- 3:dd96529b7ae9
- Child:
- 5:5195884584d6
--- a/main.cpp Sat Dec 09 16:18:22 2017 +0000
+++ b/main.cpp Sun Dec 10 13:50:11 2017 +0000
@@ -1,66 +1,297 @@
#include "mbed.h"
-void print_char(char c = '*')
+void timer();
+void led_off();
+
+void print_help() //help message
{
- printf("%c", c);
- fflush(stdout);
+printf("\r\n");
+printf("***********************************************************\r\n");
+printf("* LEDON:x - set time for LED to be ON *\r\n");
+printf("* - x - time in seconds (range 1-1000) *\r\n");
+printf("* LEDOFF - turn LED off *\r\n");
+printf("* LEDSTATE - print current LED state *\r\n");
+printf("* BRIGHTSET:x - set LED brightnes *\r\n");
+printf("* x - range 0-7 (0 - low, 7 - high) *\r\n");
+printf("* BRIGHTGET - get LED brightnes *\r\n");
+printf("* BUTTONGET - get user button monitorring state *\r\n");
+printf("* BUTTONSTATE - get user button state *\r\n");
+printf("* BUTTONENABLE - enable button monitorring *\r\n");
+printf("* BUTTONDISABLE - enable button monitorring *\r\n");
+printf("* HELP - print available list of commands *\r\n");
+printf("***********************************************************\r\n");
}
-Thread thread;
-Thread thread1;
+void print_welcome() //welcome message
+{
+printf("\r\n");
+printf("***********************************************************\r\n");
+printf("* *\r\n");
+printf("* WELCOME! *\r\n");
+printf("* *\r\n");
+printf("* To turn LED on for X seconds type: *\r\n");
+printf("* LEDON:x where [x] is specified period of seconds *\r\n");
+printf("* x range 1-1000 *\r\n");
+printf("* *\r\n");
+printf("***********************************************************\r\n");
+}
+
+void print_fc_off() //fault code message when LED is off
+{
+printf("\r\nWRONG INPUT\r\n");
+printf(" To turn LED on type: \r\n");
+printf(" LEDON:x where [x] is specified period of seconds \r\n");
+printf(" x range 1-1000 \r\n");
+}
+
+void print_fc_on() //fault code message when LED is on
+{
+printf("\r\nWRONG INPUT\r\n");
+printf(" To see available list of commands type HELP\r\n");
+}
+
+//const
+ int const LED_ON = 1;
+ int const BRIGHT = 2;
+ int const ON = 1;
+ int const OFF = 0;
+ int const B_ON = 0;
+ int const B_OFF = 1;
+
+//threads
+Thread lamp_thread;
+Thread timer_thread;
+
+//variables
int print = 1;
char input [64];
-int lamp = 50;
+int lamp_bright = 4;
+bool lamp_state = false;
+int lamp_time;
+int state = OFF;
+int b_state = OFF;
+int b_push = B_OFF;
-//DigitalOut led1(LED1);
+//interfaces
+DigitalIn button(PC_13);
+DigitalOut led2(LED1);
PwmOut led1(D11);
-//PwmOut led2(D13);
-void print_thread()
+//pow
+int power(int x, int n) {
+ if(n == 0) return 1;
+ return x * power(x, n - 1);
+ }
+
+// parse string and calculate input integer data
+int strtoint(char instring[64], int slogan)
{
- while (true) {
-
- if (print == 1) {
-// printf("\r\n*** Do you love me too? ***\r\n");
- printf("\r\nLamp is ON\r\n");
- printf("\r\nPlese type + or - to change brightness\r\n");
- print = 0;
+ int str_len = strlen(instring);
+ int result = 0;
+ switch (slogan){
+ case LED_ON: // "LEDON:"
+ if (str_len > 10) return -2; // too long time
+ for(int i = 6; i < str_len; i++)
+ {
+ if(instring[i] > 47 && instring[i] < 58) // if input is digit
+ {
+ result = (result * 10) + instring[i] - 48;
}
- scanf("%s",input);
- printf("\r\n* %s *\r\n",input);
- if (!strcmp(input,"-")){
- if (lamp < 90) lamp = lamp + 10;
- else if (lamp < 100) lamp = lamp + 1;
- printf("\r\n*** Lamp brightness is %d ***\r\n", lamp);
+ else // not a digit
+ {
+ result = -1;
+ break;
+ }
+ }
+ if (result > 1000) result = -2;
+ break;
+
+ case BRIGHT: //BRIGHTSET:
+ if (str_len > 11) return -2; // too long time
+ if(instring[10] > 55) return -2; // too long time
+ if(instring[10] > 47 && instring[10] < 58) // if input is digit
+ result = instring[10] - 48;
+ else // not a digit
+ result = -1;
+ break;
+ default:
+ break;
+ }
+ return result;
+}
+
+//translate to CAPS
+void caps()
+{
+ for(int i = 0; i < 63; i++)
+ {
+ if(input[i] > 96 && input[i] < 123)
+ input[i] = input[i] - 32;
+ }
+ printf("\r\n<%s\r\n",input);
+}
+
+//thread lamp, while led is off
+void led_off()
+{
+ if (!strncmp (input,"LEDON:",6))
+ {
+ lamp_time = strtoint(input, LED_ON);
+ switch (lamp_time){
+ case 0:
+ case -2: // wrong time time
+ printf("WRONG TIME IS SPECIFIED. RANGE IS 1-1000\r\n");
+ break;
+ case -1:
+ printf("PLEASE USE DIGITS FOR TIME SPECIFICATION.\r\n");
+ break;
+ default:
+ printf("LED IS ON FOR %d SECONDS\r\n",lamp_time);
+ led1 = power(2,lamp_bright) * 0.01;
+ state = ON;
+ }
+ }
+ else
+ {
+ print_fc_off();
}
- else if (!strcmp(input,"+")){
- printf("\r\n*** %d ***\r\n", lamp);
- if (lamp > 10) lamp = lamp - 10;
- else if (lamp > 0) lamp = lamp - 1;
- printf("\r\n*** Lamp brightness is %d ***\r\n", lamp);
+}
+
+//thread lamp, while led is on
+void led_on()
+{
+ if (!strcmp (input,"LEDOFF")) //turn led off
+ {
+ lamp_time = 1;
+ }
+ else if(!strcmp (input,"LEDSTATE")) //print LED state
+ {
+ printf("LED IS ON FOR %d SECONDS\r\n",lamp_time);
+ }
+ else if(!strncmp(input,"BRIGHTSET:",10)) //BRIGHTSET:x
+ {
+ int bright = strtoint(input, BRIGHT);
+ switch (bright){
+ case -2: // wrong brightness
+ printf("WRONG BRIGHTNESS IS SPECIFIED. RANGE IS 0-7\r\n");
+ break;
+ case -1:
+ printf("PLEASE USE DIGITS FOR BRIGHTNESS SPECIFICATION.\r\n");
+ break;
+ default:
+ lamp_bright = bright;
+ led1 = power(2,lamp_bright) * 0.01;
+ printf("BRIGHTNESS IS SET TO %d\r\n",lamp_bright);
+ }
+ }
+ else if(!strcmp (input,"BRIGHTGET")) //print brightness level
+ {
+ printf("BRIGHTNESS IS SET TO %d\r\n",lamp_bright);
+ }
+ else if(!strcmp (input,"BUTTONGET")) //print user button state
+ {
+ printf("BUTTON MONITORRING IS SET TO %s\r\n",b_state?"ON":"OFF");
+ }
+ else if(!strcmp (input,"BUTTONENABLE")) //enable button monitoring
+ {
+ b_state = ON;
+ printf("BUTTON MONITORRING IS SET TO ON\r\n");
+ }
+ else if(!strcmp (input,"BUTTONDISABLE")) //disable button monitoring
+ {
+ b_state = OFF;
+ printf("BUTTON MONITORRING IS SET TO OFF\r\n");
+ }
+ else if(!strcmp (input,"BUTTONSTATE")) //get button state
+ {
+ printf("BUTTON IS %sPUSHED\r\n",button?"NOT ":"");
+ }
+ else if(!strcmp (input,"HELP")) //print help message
+ {
+ print_help();
+ }
+ else if (!strncmp (input,"LEDON:",6)) // reinit led timer
+ {
+ lamp_time = strtoint(input, LED_ON);
+ switch (lamp_time){
+ case 0:
+ case -2: // wrong time time
+ printf("WRONG TIME IS SPECIFIED. RANGE IS 1-1000\r\n");
+ break;
+ case -1:
+ printf("PLEASE USE DIGITS FOR TIME SPECIFICATION.\r\n");
+ break;
+ default:
+ printf("LED IS ON FOR %d SECONDS\r\n",lamp_time);
+ led1 = power(2,lamp_bright) * 0.01;
+ state = ON;
}
- else {
- printf("\r\n(plese type + or -)\r\n");
- }
+ }
+ else // wrong input
+ {
+ print_fc_on();
}
}
+//thread lamp, main function
+void led()
+{
+ while (true)
+ {
+ scanf("%s",input);
+ caps();
+ switch (state){
+ case OFF:
+ led_off();
+ break;
+ case ON:
+ led_on();
+ break;
+ default:
+ break;
+ }
+ }
+}
+
+//thread timer, main function
+void timer()
+{
+ while(true){
+ while(state == ON)
+ {
+ lamp_time --;
+ if (lamp_time == 0)
+ {
+ led1 = 0;
+ printf("LED IS TURNED OFF\r\n");
+ lamp_thread.start(led_off);
+ state = OFF;
+ b_state = OFF;
+ }
+ wait(1);
+ }
+ wait(1);
+ }
+}
+
+
int main()
{
- printf("\r\n*** Welcome ***\n\r");
-
- thread.start(print_thread);
-
+ print_welcome();
+ lamp_thread.start(led);
+ timer_thread.start(timer);
while (true) {
- led1 = (0.01 * lamp);
-// led2 = !led2;
+
+ if (state == ON && b_state == ON)
+ {
+ if (button != b_push)
+ {
+ b_push = button;
+ printf("BUTTON IS %sPUSHED\r\n",b_push?"NOT ":"");
+ }
+ }
wait(0.2);
-// led1 = led1 + 0.01;
-// wait(0.2);
-// if(led1 == 1.0) {
-// led1 = 0;
-// }
}