some work done..

cm_nmea_decoder.c

@@ -6,20 +6,46 @@
  */
 
 #include "cm_nmea_decoder.h"
+#include <stdlib.h>
 #include <string.h>
 #define MAX_NMEA_MSG_TYPES 2
 const char *nmea_msg_types[MAX_NMEA_MSG_TYPES] = {"$GPGLL", "$GPGFF"};
 typedef int (*nmeaDecoder_Evt_fpt)(cm_nmea_msg_t *inst, char *str);
 
-static int sGPGLL_decode(char *str){
+static int findLenToChar(const char *str, const char character){
+
+	int i = 0;
+
+	while((str[i] != character) && (str[i] != '\0')) i++;
+
+	return i;
+}
+
+static int sGPGLL_decode(cm_nmea_msg_t *inst, char *str){
 
 	//Move pointer until we meet a "," or NULL!
-	while((*str != ",") && (*str != NULL)) str++;
+	while((str != NULL) && (*str != ',')) str++;
+
+	// Move past ','
+	if (*str == ',') str++;
+
+	// Find comma
+	int comma_idx = findLenToChar(str, '.');
+
+	// Replace with '\0'
+	str[comma_idx] = '\0';
+
+	// Decode first part of latitude
+	inst->gpgll_msg.coordinates.deg = atoi(str);
+
+	printf("deg: %d, str: %s \r\n ",comma_idx,str);
+
+	return 0;
 }
 
 
 nmeaDecoder_Evt_fpt nmea_decodeFuncs[1] = {
-
+		(void *)&sGPGLL_decode,
 };
 
 static int sNMEA_getMsgType(char *str){
@@ -34,12 +60,12 @@ static int sNMEA_getMsgType(char *str){
 
 int cm_nmea_characterDecode(char in){
 
-
+return 0;
 
 }
 
 // This function returns the message type, so the user knows which message has been decoded!
-int cm_nmea_stringDecode(char *str){
+int cm_nmea_stringDecode(cm_nmea_msg_t *inst, char *str){
 
 	// Find which type of message we need to decode.
 	int nmea_msg_idx = sNMEA_getMsgType(str);
@@ -48,6 +74,8 @@ int cm_nmea_stringDecode(char *str){
 	if(nmea_msg_idx == -1) return nmea_msg_idx;
 
 	// Use the correct function to decode!
-	if(nmea_msg_idx >= 0) nmea_msg_types[nmea_msg](str);
+	if(nmea_msg_idx >= 0) nmea_decodeFuncs[nmea_msg_idx](inst,str);
+
+	return nmea_msg_idx;
 
 }