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temtronic
Joined: 01 Jul 2010
Posts: 9243
Location: Greensville,Ontario
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 Posted: Sun Nov 20, 2022 2:53 pm |
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You do understand that CCS default for an integer is UNSIGNED and NOT signed ?
I don't know what the JSON code needs, but if it does need a signed int, you will have to recode to make it so. |
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kmp84
Joined: 02 Feb 2010
Posts: 354
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| Posted: Sun Nov 20, 2022 8:23 pm |
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| I understand you, but it’s Not the problem. Even if the type is wrong the code will compile. I have checked and edit this at the beginning. |
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dyeatman
Joined: 06 Sep 2003
Posts: 1934
Location: Norman, OK
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| Posted: Sun Nov 20, 2022 8:41 pm |
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If you are getting errors it is NOT compiling.
If the code does compile without errors what is it
doing (or not doing) vs what you expect?
_________________
Google and Forum Search are some of your best tools!!!! |
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Ttelmah
Joined: 11 Mar 2010
Posts: 19540
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| Posted: Mon Nov 21, 2022 3:20 am |
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Looking at the code, it is using push and pop functions on a stack.
The PIC16, does not have a software accessible stack. Result not possible.
You could write your own software stack emulation functions, but easier
honestly to not use a stack based approach to do it on this chip. |
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temtronic
Joined: 01 Jul 2010
Posts: 9243
Location: Greensville,Ontario
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| Posted: Mon Nov 21, 2022 6:50 am |
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I went back to the original TBxxxx.PDF. Seems it was written for an AVR not a PIC, under the Microchip compiler and not CCS C.
There is NO way the code,as presented WILL compile for a PIC without a LOT of rewriting/ translation. |
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kmp84
Joined: 02 Feb 2010
Posts: 354
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| Posted: Tue Nov 22, 2022 2:47 pm |
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Hi All,
I have write my simple "JSON" decoder and workaround this unnecessary example.
Best Regards, |
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temtronic
Joined: 01 Jul 2010
Posts: 9243
Location: Greensville,Ontario
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| Posted: Tue Nov 22, 2022 3:49 pm |
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| you should post your program in the code library here for others to see. |
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kmp84
Joined: 02 Feb 2010
Posts: 354
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| Posted: Tue Nov 22, 2022 6:52 pm |
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Hi,
I'm not sure it's for code library because I'm using just "string" library and incremental char pointer to search parts of string, but I'll post here:
| Code: |
#include <16F1459.h>
#device ANSI
#device PASS_STRINGS=IN_RAM
#fuses INTRC_IO,NOPLLEN,NOPROTECT,MCLR,PUT,NOWDT // CLKOUT -> Enable clk/4 out on PIN_A4
#use delay(int=16MHz, clock=24MHz)
#use RS232(DEBUGGER,rcv=PIN_B6,xmit=PIN_B6,stream=STREAM_SERIAL_INPUT)
#define TEST_STRING "{\"yellow\":\"off\",\"red\":\"on\",\"blue\":\"off\",\"green\":\"on\"}"
#define SRC_STRING "\"red\":"
#define RED_LED_ON() output_high(PIN_C5)
#define RED_LED_OFF() output_low(PIN_C5)
#include <string.h>
int1 func(char *buff, char *src){
int1 FL = FALSE;
char *cPtr;
int8 n;
cPtr = strstr (buff, src);
n = strlen(src);
if(cPtr != NULL){
if(memcmp(cPtr+n, "\"on\"", 4) == 0)
FL = TRUE;
}
return FL;
}
void main(void){
delay_ms(100);
delay_ms(100); //StartUp Delay.
setup_adc(ADC_OFF); //Stop ADC.
setup_adc_ports(NO_ANALOGS); //Disable Adc-channels.
setup_comparator(NC_NC_NC_NC);//Disable Comparator module.
printf("\r\nStr1: %s,\r\nStr2: %s", TEST_STRING, SRC_STRING);
if(func(TEST_STRING, SRC_STRING))
RED_LED_ON();
else
RED_LED_OFF();
while(TRUE){
// user code...
}
} |
Best Regards, |
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densimitre
Joined: 21 Dec 2004
Posts: 45
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| Posted: Mon Nov 28, 2022 4:53 pm |
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| kmp84 wrote: | Hi,
I'm not sure it's for code library because I'm using just "string" library and incremental char pointer to search parts of string, but I'll post here:
| Code: |
#include <16F1459.h>
#device ANSI
#device PASS_STRINGS=IN_RAM
#fuses INTRC_IO,NOPLLEN,NOPROTECT,MCLR,PUT,NOWDT // CLKOUT -> Enable clk/4 out on PIN_A4
#use delay(int=16MHz, clock=24MHz)
#use RS232(DEBUGGER,rcv=PIN_B6,xmit=PIN_B6,stream=STREAM_SERIAL_INPUT)
#define TEST_STRING "{\"yellow\":\"off\",\"red\":\"on\",\"blue\":\"off\",\"green\":\"on\"}"
#define SRC_STRING "\"red\":"
#define RED_LED_ON() output_high(PIN_C5)
#define RED_LED_OFF() output_low(PIN_C5)
#include <string.h>
int1 func(char *buff, char *src){
int1 FL = FALSE;
char *cPtr;
int8 n;
cPtr = strstr (buff, src);
n = strlen(src);
if(cPtr != NULL){
if(memcmp(cPtr+n, "\"on\"", 4) == 0)
FL = TRUE;
}
return FL;
}
void main(void){
delay_ms(100);
delay_ms(100); //StartUp Delay.
setup_adc(ADC_OFF); //Stop ADC.
setup_adc_ports(NO_ANALOGS); //Disable Adc-channels.
setup_comparator(NC_NC_NC_NC);//Disable Comparator module.
printf("\r\nStr1: %s,\r\nStr2: %s", TEST_STRING, SRC_STRING);
if(func(TEST_STRING, SRC_STRING))
RED_LED_ON();
else
RED_LED_OFF();
while(TRUE){
// user code...
}
} |
Best Regards, |
Here you have a simple mqtt/json parser code (part of it) with printf() outputs for debugging purposes:
JSON MQTT data is coming from SIM7600 board. You can use ex_sisr.c in order to implement ring_buffer with enough size.
Data from YAT 2.1 terminal (for debug)
| Code: |
+CMQTTRXSTART: 0,15,52<CR><LF> (24)
+CMQTTRXTOPIC: 0,15<CR><LF> (21)
8680200310XXXXX<CR><LF> (17)
+CMQTTRXPAYLOAD: 0,52<CR><LF> (23)
{"action":"post", "resource":"relay_0","state":"on"}<CR><LF> (54)
+CMQTTRXEND: 0<CR><LF> (16)
<CR><LF> (2)
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I hope this be useful
in rx_buffer you can store data from rda_isr for post processing, using strstr to find key string position and strtok to get the data.
With a hard and dedicated work, you can make it real...
for incomming messages, poll the rx_buffer
| Code: |
uint8_t mqtt_loop() {
byte ret_val = AT_RESP_ERR_DIF_RESP; //default value (not open)
/* # Chars
+CMQTTRXSTART: 14
+CMQTTRXTOPIC: 14
< > XX // Topic name
+CMQTTRXPAYLOAD: 16
< > XX // Payload data
+CMQTTRXEND: 12
Total 56
*/
fprintf(pc,"MQTT Loop: srtlen(rx_buffer): %lu \r\n", strlen(rx_buffer));
if( (strlen(rx_buffer)>56) && isStringReceived("START:") && isStringReceived("END: ") ) { // Valid MQTT received packet
fprintf(pc,"There are JSON/MQTT data\r\n");
ret_val=TRUE;
}
return(ret_val);
}
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You can make a customized function for testing any string in the rx_buffer with strstr()
isStringReceived() is strstr() based on, like arduino SIMCOM modules code
| Code: |
uint8_t get_mqtt_message() {
fprintf(pc,"get_mqtt_message(): RX_Buffer:%s\r\n",rx_buffer);
p_aux = strstr( rx_buffer,"START:"); // get starting pos of mqtt msj
//strtok(rx_buffer,"\r\n"); // discard first LINE
strtok(p_aux,"\r\n"); // discard first LINE
//strtok(rx_buffer,"\r\n"); // discard TOPIC specs
strtok(NULL,"\r\n"); // discard TOPIC specs
//topic = strtok(NULL,"\r\n"); // store TOPIC name
strcpy(topic,strtok(NULL,"\r\n"));
fprintf(pc,"TOPIC NAME:%s\r\n",topic);
//p_aux = strtok(NULL,"\r\n"); // discard PAYLOAD specs
strtok(NULL,"\r\n"); // discard PAYLOAD specs
//rx_payload = strtok(NULL,"\r\n"); // store PAYLOAD DATA.
strcpy(rx_json_payload,strtok(NULL,"\r\n"));
fprintf(pc,"JSON PAYLOAD:%s\r\n",rx_json_payload);
buffer_flush(); //clear rx_buffer
}
uint8_t process_mqtt_message(void) {
// Topic is device ID
// Actions and Status instrucctions are included inside JSON Payload
// Each actions/status commands have responses from device
if(strcmp(topic,IMEI)==0) {
fprintf(pc,"MQTT MESSAGE PROCESSING.....\r\n");
/* JSON MQTT Message
{"action":"post",
"resource":"relay_x", //X=0,1,2,3:
"state":"on"}
*/
// Parse rx_payload data
char action[10];
char resource[10];
char state[4];
char *action_p = strstr(rx_json_payload,"\"action\"");
char *resource_p = strstr(rx_json_payload,"\"resource\"");
char *state_p = strstr(rx_json_payload,"\"state\"");
//Action
strtok(action_p,":"); // discard first LINE
strcpy(action,strtok(NULL,",")); // get action name "get" or "post"
fprintf(pc,"MQTT MESSAGE: \"Action\": %s\r\n", action);
//Resource
strtok(resource_p,":"); // discard first LINE
strcpy(resource,strtok(NULL,",")); // get action name "get" or "post"
fprintf(pc,"MQTT MESSAGE: \"Resource\": %s\r\n", resource);
//State
strtok(state_p,":"); // discard first LINE
strcpy(state,strtok(NULL,"}")); // get action name "get" or "post"
fprintf(pc,"MQTT MESSAGE: \"State\": %s\r\n", state);
//fprintf(pc,"STRCMP: ACTION vs POST: %u\r\n", strcmp(action,"\"post\""));
if( strcmp(action,"\"post\"")==0) {
if (strcmp(state,"\"on\"")==0) {
if(strcmp(resource,"\"relay_0\"")==0) {
sprintf(tx_json_payload,"{\"report\":\"state\",\"relay_0\":\"on\"}");
output_high(relay_0);
mqtt_publish(IMEI, tx_json_payload, 0, 60, 0); // send a feedback about the control action status to the remote controller (MQTT client or any other control platform)
memset(tx_json_payload, '\0', 128);
buffer_flush();
}
}
if (strcmp(state,"\"off\"")==0) {
if(strcmp(resource,"\"relay_0\"")==0) {
sprintf(tx_json_payload,"{\"report\":\"state\",\"relay_0\":\"off\"}");
output_low(relay_0);
mqtt_publish(IMEI, tx_json_payload, 0, 60, 0); // send a feedback about the control action status to the remote controller (MQTT client or any other control platform)
memset(tx_json_payload, '\0', 128);
buffer_flush();
}
} //if (strcmp(state,"\"on\"")
} //if( strcmp(action,"\"post\"")==0)
} // if (IMEI)
} //process_mqtt_message(void)
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KR |
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