Gaston Salazar-Silva
/
mydsc-nonblocking-example
An example with nonblocking communications
main.cpp@1:2cd22f07b879, 2020-02-28 (annotated)
- Committer:
- ghsalazar
- Date:
- Fri Feb 28 20:07:32 2020 +0000
- Revision:
- 1:2cd22f07b879
- Parent:
- 0:46aa79a823ee
- Child:
- 2:f884fffe2c4b
An example for serial communication with terminal interface.
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
ghsalazar | 0:46aa79a823ee | 1 | /** |
ghsalazar | 0:46aa79a823ee | 2 | @file main.cpp |
ghsalazar | 0:46aa79a823ee | 3 | @author Gastón SALAZAR <gaston_salazar@yahoo.com> |
ghsalazar | 0:46aa79a823ee | 4 | */ |
ghsalazar | 0:46aa79a823ee | 5 | |
ghsalazar | 0:46aa79a823ee | 6 | #include "mbed.h" |
ghsalazar | 1:2cd22f07b879 | 7 | #include "stdio.h" |
ghsalazar | 1:2cd22f07b879 | 8 | #include "stdlib.h" |
ghsalazar | 1:2cd22f07b879 | 9 | #include "ctype.h" |
ghsalazar | 0:46aa79a823ee | 10 | |
ghsalazar | 1:2cd22f07b879 | 11 | #include "mydsc_kvp.h" |
ghsalazar | 0:46aa79a823ee | 12 | |
ghsalazar | 1:2cd22f07b879 | 13 | const unsigned VALUE_SIZE = 128; |
ghsalazar | 0:46aa79a823ee | 14 | |
ghsalazar | 1:2cd22f07b879 | 15 | float kp = 0; |
ghsalazar | 1:2cd22f07b879 | 16 | float ki = 0; |
ghsalazar | 1:2cd22f07b879 | 17 | |
ghsalazar | 1:2cd22f07b879 | 18 | char* get_proportional(void) |
ghsalazar | 0:46aa79a823ee | 19 | { |
ghsalazar | 1:2cd22f07b879 | 20 | static char value[VALUE_SIZE]; |
ghsalazar | 1:2cd22f07b879 | 21 | |
ghsalazar | 1:2cd22f07b879 | 22 | sprintf(value, "%f", kp); |
ghsalazar | 1:2cd22f07b879 | 23 | return value; |
ghsalazar | 0:46aa79a823ee | 24 | } |
ghsalazar | 0:46aa79a823ee | 25 | |
ghsalazar | 1:2cd22f07b879 | 26 | int set_proportional(char* value) |
ghsalazar | 0:46aa79a823ee | 27 | { |
ghsalazar | 1:2cd22f07b879 | 28 | sscanf(value, "%f", &kp); |
ghsalazar | 1:2cd22f07b879 | 29 | return MYDSC_KVP_SUCCESS; |
ghsalazar | 1:2cd22f07b879 | 30 | } |
ghsalazar | 0:46aa79a823ee | 31 | |
ghsalazar | 1:2cd22f07b879 | 32 | char* get_integral(void) |
ghsalazar | 1:2cd22f07b879 | 33 | { |
ghsalazar | 1:2cd22f07b879 | 34 | static char value[VALUE_SIZE]; |
ghsalazar | 0:46aa79a823ee | 35 | |
ghsalazar | 1:2cd22f07b879 | 36 | sprintf(value, "%f", ki); |
ghsalazar | 1:2cd22f07b879 | 37 | return value; |
ghsalazar | 1:2cd22f07b879 | 38 | } |
ghsalazar | 1:2cd22f07b879 | 39 | |
ghsalazar | 1:2cd22f07b879 | 40 | int set_integral(char* value) |
ghsalazar | 1:2cd22f07b879 | 41 | { |
ghsalazar | 1:2cd22f07b879 | 42 | sscanf(value, "%f", &kp); |
ghsalazar | 1:2cd22f07b879 | 43 | return MYDSC_KVP_SUCCESS; |
ghsalazar | 0:46aa79a823ee | 44 | } |
ghsalazar | 0:46aa79a823ee | 45 | |
ghsalazar | 0:46aa79a823ee | 46 | int main() |
ghsalazar | 0:46aa79a823ee | 47 | { |
ghsalazar | 1:2cd22f07b879 | 48 | // Setup |
ghsalazar | 1:2cd22f07b879 | 49 | const unsigned short BUFFER_SIZE = 128; |
ghsalazar | 1:2cd22f07b879 | 50 | static char command_buffer[BUFFER_SIZE]; |
ghsalazar | 1:2cd22f07b879 | 51 | static char key_buffer[BUFFER_SIZE]; |
ghsalazar | 1:2cd22f07b879 | 52 | static char value_buffer[BUFFER_SIZE]; |
ghsalazar | 1:2cd22f07b879 | 53 | |
ghsalazar | 1:2cd22f07b879 | 54 | Serial serial(USBTX, USBRX); |
ghsalazar | 1:2cd22f07b879 | 55 | serial.baud(9600); |
ghsalazar | 1:2cd22f07b879 | 56 | serial.format(8, SerialBase::None, 1); |
ghsalazar | 1:2cd22f07b879 | 57 | serial.printf("\r\nHello, world!"); |
ghsalazar | 1:2cd22f07b879 | 58 | |
ghsalazar | 1:2cd22f07b879 | 59 | mydsc_kvp_t kvp; |
ghsalazar | 1:2cd22f07b879 | 60 | mydsc_kvp_init(&kvp); |
ghsalazar | 1:2cd22f07b879 | 61 | mydsc_kvp_append(&kvp, "proportional", &get_proportional, |
ghsalazar | 1:2cd22f07b879 | 62 | &set_proportional); |
ghsalazar | 1:2cd22f07b879 | 63 | mydsc_kvp_append(&kvp, "integral", &get_integral, &set_integral); |
ghsalazar | 1:2cd22f07b879 | 64 | serial.printf("\r\nVersion:\t%s", mydsc_kvp_get_value(&kvp, "version")); |
ghsalazar | 1:2cd22f07b879 | 65 | |
ghsalazar | 1:2cd22f07b879 | 66 | while(1) { |
ghsalazar | 1:2cd22f07b879 | 67 | // Loop |
ghsalazar | 1:2cd22f07b879 | 68 | int result = 0; |
ghsalazar | 1:2cd22f07b879 | 69 | char* value = ""; |
ghsalazar | 1:2cd22f07b879 | 70 | |
ghsalazar | 1:2cd22f07b879 | 71 | serial.printf("\r\n> "); |
ghsalazar | 1:2cd22f07b879 | 72 | |
ghsalazar | 1:2cd22f07b879 | 73 | serial.scanf("%s",command_buffer); |
ghsalazar | 1:2cd22f07b879 | 74 | if (strcmp(command_buffer, "set") == 0) { |
ghsalazar | 1:2cd22f07b879 | 75 | serial.scanf("%s",key_buffer); |
ghsalazar | 1:2cd22f07b879 | 76 | serial.scanf("%s",value_buffer); |
ghsalazar | 1:2cd22f07b879 | 77 | result = mydsc_kvp_set_value(&kvp, key_buffer, value_buffer); |
ghsalazar | 1:2cd22f07b879 | 78 | |
ghsalazar | 1:2cd22f07b879 | 79 | if (result == MYDSC_KVP_SUCCESS) |
ghsalazar | 1:2cd22f07b879 | 80 | serial.printf("\r\nOk"); |
ghsalazar | 1:2cd22f07b879 | 81 | else if (result == MYDSC_KVP_NO_SET) |
ghsalazar | 1:2cd22f07b879 | 82 | serial.printf("\r\nError: Value can't be changed"); |
ghsalazar | 1:2cd22f07b879 | 83 | else if (result == MYDSC_KVP_NO_KEY) |
ghsalazar | 1:2cd22f07b879 | 84 | serial.printf("\r\nError: There isn't such setting"); |
ghsalazar | 1:2cd22f07b879 | 85 | else if (result == MYDSC_KVP_WRONG_VALUE) |
ghsalazar | 1:2cd22f07b879 | 86 | serial.printf("\r\nError: The value is wrong"); |
ghsalazar | 1:2cd22f07b879 | 87 | else |
ghsalazar | 1:2cd22f07b879 | 88 | serial.printf("\r\nError: Unknown error"); |
ghsalazar | 1:2cd22f07b879 | 89 | } |
ghsalazar | 1:2cd22f07b879 | 90 | |
ghsalazar | 1:2cd22f07b879 | 91 | else if (strcmp(command_buffer,"get") == 0) { |
ghsalazar | 1:2cd22f07b879 | 92 | serial.scanf("%s",key_buffer); |
ghsalazar | 1:2cd22f07b879 | 93 | value = mydsc_kvp_get_value(&kvp,key_buffer); |
ghsalazar | 1:2cd22f07b879 | 94 | if (NULL != value) |
ghsalazar | 1:2cd22f07b879 | 95 | serial.printf("\r\n%s", value); |
ghsalazar | 1:2cd22f07b879 | 96 | else |
ghsalazar | 1:2cd22f07b879 | 97 | serial.printf("\r\nError: There isn't such setting"); |
ghsalazar | 1:2cd22f07b879 | 98 | serial.printf("\r\nOk"); |
ghsalazar | 1:2cd22f07b879 | 99 | } |
ghsalazar | 1:2cd22f07b879 | 100 | else if (strcmp(command_buffer,"help") == 0) { |
ghsalazar | 1:2cd22f07b879 | 101 | serial.printf("\r\nAvailable commands are: get help set"); |
ghsalazar | 1:2cd22f07b879 | 102 | serial.printf("\r\nOk"); |
ghsalazar | 1:2cd22f07b879 | 103 | } |
ghsalazar | 1:2cd22f07b879 | 104 | else |
ghsalazar | 1:2cd22f07b879 | 105 | serial.printf("\r\nError: %s doesn't exist\r\n", command_buffer); |
ghsalazar | 1:2cd22f07b879 | 106 | } |
ghsalazar | 0:46aa79a823ee | 107 | } |