Gaston Salazar-Silva
/
mydsc-nonblocking-example
An example with nonblocking communications
main.cpp
- Committer:
- ghsalazar
- Date:
- 2020-03-04
- Revision:
- 2:f884fffe2c4b
- Parent:
- 1:2cd22f07b879
- Child:
- 4:e315db7c4dea
File content as of revision 2:f884fffe2c4b:
/** @file main.cpp @author Gastón SALAZAR <gaston_salazar@yahoo.com> */ #include "mbed.h" #include "stdio.h" #include "stdlib.h" #include "ctype.h" #include "mydsc_kvp.h" const unsigned VALUE_SIZE = 128; float kp = 0; float ki = 0; char* get_proportional(void) { static char value[VALUE_SIZE]; sprintf(value, "%f", kp); return value; } int set_proportional(char* value) { sscanf(value, "%f", &kp); return MYDSC_KVP_SUCCESS; } char* get_integral(void) { static char value[VALUE_SIZE]; sprintf(value, "%f", ki); return value; } int set_integral(char* value) { sscanf(value, "%f", &ki); return MYDSC_KVP_SUCCESS; } int main() { // Setup const unsigned short BUFFER_SIZE = 128; static char command_buffer[BUFFER_SIZE]; static char key_buffer[BUFFER_SIZE]; static char value_buffer[BUFFER_SIZE]; Serial serial(USBTX, USBRX); serial.baud(9600); serial.format(8, SerialBase::None, 1); serial.printf("\r\nHello, world!"); mydsc_kvp_t kvp; mydsc_kvp_init(&kvp); mydsc_kvp_append(&kvp, "proportional", &get_proportional, &set_proportional); mydsc_kvp_append(&kvp, "integral", &get_integral, &set_integral); serial.printf("\r\nVersion:\t%s", mydsc_kvp_get_value(&kvp, "version")); while(1) { // Loop int result = 0; char* value = ""; serial.printf("\r\n> "); serial.scanf("%s",command_buffer); if (strcmp(command_buffer, "set") == 0) { serial.scanf("%s",key_buffer); serial.scanf("%s",value_buffer); result = mydsc_kvp_set_value(&kvp, key_buffer, value_buffer); if (result == MYDSC_KVP_SUCCESS) serial.printf("\r\nOk"); else if (result == MYDSC_KVP_NO_SET) serial.printf("\r\nError: Value can't be changed"); else if (result == MYDSC_KVP_NO_KEY) serial.printf("\r\nError: There isn't such setting"); else if (result == MYDSC_KVP_WRONG_VALUE) serial.printf("\r\nError: The value is wrong"); else serial.printf("\r\nError: Unknown error"); } else if (strcmp(command_buffer,"get") == 0) { serial.scanf("%s",key_buffer); value = mydsc_kvp_get_value(&kvp,key_buffer); if (NULL != value) serial.printf("\r\n%s", value); else serial.printf("\r\nError: There isn't such setting"); serial.printf("\r\nOk"); } else if (strcmp(command_buffer,"help") == 0) { serial.printf("\r\nAvailable commands are: get help set"); serial.printf("\r\nOk"); } else serial.printf("\r\nError: %s doesn't exist\r\n", command_buffer); } }