Diff: modbus.cpp

Revision:

1:b50d9b988d1e

Parent:

0:f306cb0263a6

--- a/modbus.cpp	Wed Mar 14 06:17:48 2018 +0000
+++ b/modbus.cpp	Wed Mar 14 14:55:36 2018 +0000
@@ -7,7 +7,7 @@
 enum state {IDLE, RECEPTION, END} protState = IDLE;
 
 int process_buffer(char *buf, uint8_t *frame)
-{
+{printf("Modbus buffer\n");
     int status = 0;
     uint8_t sum = 0;
     uint8_t lrc, i;
@@ -33,12 +33,12 @@
 }
 
 void modbus_init(uint8_t id)
-{
+{printf("Modbus Initial ID\n");
     nodeId = id;
 }
 
 uint16_t modbus_read(uint16_t offset)
-{
+{   printf("Modbus Read\n");
     if (offset < ADDR_RANGE) {
         return regValue[offset];
     } 
@@ -48,7 +48,7 @@
 uint16_t modbus_update(uint8_t offset, uint16_t val)
 {
     uint16_t tmp;
-    
+    printf("Modbus Update\n");
     if (offset < ADDR_RANGE) {
         tmp = regValue[offset];
         regValue[offset] = val;
@@ -69,18 +69,23 @@
                 protState = RECEPTION;
                 idx = 0;
                 status = 0;
+                printf("IDLE case \n");
             }
             break;
         case RECEPTION:
+         printf("Reception case \n");
             if ((ch >= '0') && (ch <= '9')) {
-                buf[idx++] = ch;
+                buf[idx++] = ch; 
+                 printf("character length0-9\n");
             } else if ((ch >= 'a') && (ch <= 'f')) {
                 buf[idx++] = ch;
             } else if ((ch >= 'A') && (ch <= 'F')) {
                 buf[idx++] = ch;
             } else if (ch == '\r') {
+                printf("type \r END \n");
                 buf[idx] = 0;
                 protState = END;
+                
             } else {
                 protState = IDLE;
             }
@@ -90,6 +95,7 @@
                 if (process_buffer(buf, frame)) {
                     if ((frame[0] == nodeId) && (frame[1] == FUNC_CODE)) {
                         status = 1;
+                        printf("END\n");
                     }
                 }
             } 
@@ -100,4 +106,4 @@
     }
     
     return status;
-}
+}
\ No newline at end of file