DCS_TEAM
uses pushing box to publish to google spreadsheets with a state machine instead of a while loop
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GSM_PUSHING_BOX_STATE_MACHINE
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DCS_TEAM
Diff: GSMLibrary.cpp
- Revision:
- 16:6807d437cd48
- Parent:
- 15:19ae032e2e54
- Child:
- 17:360afa1e6809
--- a/GSMLibrary.cpp Fri Mar 06 02:45:22 2015 +0000
+++ b/GSMLibrary.cpp Fri Mar 06 22:14:50 2015 +0000
@@ -15,7 +15,7 @@
#define AT_CMGS "AT+CMGS=" RECEIVER_PHONE_NUMBER
#define MESSAGE_BODY "stress test\32\32"
-//Definition for at repsonses
+//Definition for AT repsonses
//Please notice that after ":" the gsm will usually send aditional information
#define AT_OK_RESPONSE "OK" //Response after sending "AT" message
#define AT_CSQ_RESPONSE "+CSQ:" //+CSQ: <arg1>,<arg2> where <arg1> is signal strength arg1 = 0-30 where a number below 10 means low signal strength and 99 is not knwn or detectable signal and arg2 is bit error rate form 0-7, 99 will represent error
@@ -25,196 +25,162 @@
#define AT_SENDSMS_RESPONSE ">" // +CMGS: <id> this will include the message id. CMGS ERROR for error and
#define AT_SUCCESS_REPSONSE "+CMGS:"
-
+//External variables
extern Serial pc;
extern Serial gsm;
extern uint8_t buffer[BUFFER_LENGTH];//buffer storing char
+
+//Internal variables
gsm_states gsm_current_state = GSM_INITIALIZE;
-
char send = 0;
int timeout_count = 0;
-char timeout_limit = TIMEOUTLIMIT;
-void gsm_tick(){
- if(++timeout_count >= timeout_limit){
+void gsm_tick()
+{
+ if (getGSMIdleBit() || gsm_timeOut() || (send && gsm_current_state == GSM_INITIALIZE)) //question with send...
+ {
+ resetGSMIdleBit(); //reset GSM idle bit
+ gsm_nextStateLogic(); //Next state
+ gsm_mealyOutputs(); //Mealy outputs
+ flushQueue(); //Flush the queue
+ }
+}
+
+
+
+//Advance timeout counter; if timeout, return true
+bool gsm_timeOut()
+{
+ if(++timeout_count >= TIMEOUTLIMIT){
timeout_count=0;
gsm_current_state = GSM_INITIALIZE;
+ return true;
}
- switch(gsm_current_state){
- //when send flag is on , send AT_OK message to gsm.
+ else
+ return false;
+}
+
+//Next state logic -----------------------------------------------------
+void gsm_nextStateLogic()
+{
+ printQueue(); //$debug
+
+ switch(gsm_current_state)
+ {
case GSM_INITIALIZE:
- pc.printf("gsm_initilize state\r\n");//&debug
+ pc.printf("gsm_initialize state\r\n");//&debug
timeout_count = 0;
- if(send){ //send first at_ok message
- resetGSMIdleBit();
- pc.printf("sending AT_OK\r\n");//&debug
- gsm.puts(AT_OK);
- gsm.puts("\r\n");
- gsm_current_state = GSM_AT_OK;
- }
- else
- gsm_current_state = GSM_INITIALIZE;
+ if (send)
+ gsm_current_state = GSM_AT_OK; //unconditional (check it)
break;
-
- // check for repsonse to AT and if correct send AT+CSQ message
case GSM_AT_OK:
pc.printf("inside AT_OK state\r\n");//&debug
- if(getGSMIdleBit()){
- printQueue(); //$debug
- if(findInQueue(AT_OK_RESPONSE)){
- resetGSMIdleBit();
- pc.printf("sending AT_CSQ\r\n");//&debug
- gsm.puts(AT_CSQ);
- gsm.puts("\r\n");
- gsm_current_state = GSM_AT_CSQ;
- }
- else{
- resetGSMIdleBit();
- gsm.puts(AT_OK);
- gsm.puts("\r\n");
- }
- }
+ if (findInQueue(AT_OK_RESPONSE))
+ gsm_current_state = GSM_AT_CSQ;
break;
-
- //CHECK FOR RESPOSE TO at+csq AND SEND at+creg
case GSM_AT_CSQ:
pc.printf("inside AT_CSQ state \r\n");//&debug
- if(getGSMIdleBit()){
- printQueue(); //$debug
- if(findInQueue(AT_CSQ_RESPONSE)){
- if(parseInt() > 9){
- resetGSMIdleBit();
- pc.printf("sending AT_CREG\r\n");//&debug
- gsm.puts(AT_CREG);
- gsm.puts("\r\n");
- gsm_current_state = GSM_AT_CREG;
- }
- }
- else{
- resetGSMIdleBit();
- gsm.puts(AT_CSQ);
- gsm.puts("\r\n");
- }
- }
+ if(findInQueue(AT_CSQ_RESPONSE))
+ gsm_current_state = GSM_AT_CREG;
break;
-
- //check for AT creg and if correct send AT+CMGF
case GSM_AT_CREG:
pc.printf("gsm_creg state\r\n");//&debug
- if(getGSMIdleBit()){
- printQueue(); //$debug
- if(findInQueue(AT_CREG_RESPONSE)){
- pc.printf("creg parse Int1: %d\r\n",parseInt());//&debug
- int q = parseInt();
- pc.printf("creg parse Int2: %d\r\n",q);//&debug
- if(q == 1){
- resetGSMIdleBit();
- pc.printf("sending AT_CMGF\r\n");//&debug
- gsm.puts(AT_CMGF);
- gsm.puts("\r\n");
- gsm_current_state = GSM_AT_CMGF;
- }
- }
- if(gsm_current_state == GSM_AT_CREG){
- resetGSMIdleBit();
- gsm.puts(AT_CREG);
- gsm.puts("\r\n");
- }
+ if(findInQueue(AT_CREG_RESPONSE))
+ {
+ pc.printf("creg parse Int1: %d\r\n",parseInt());//&debug
+ int q = parseInt();
+ pc.printf("creg parse Int2: %d\r\n",q);//&debug
+ if(q == 1)
+ gsm_current_state = GSM_AT_CMGF;
}
break;
-
- //check for cmgf esponse and if correct go to at_cmgs
case GSM_AT_CMGF:
pc.printf("gsm_cmgf state\r\n");//&debug
- if(getGSMIdleBit()){
- printQueue(); //$debug
- if(findInQueue(AT_CMGF_RESPONSE)){
- resetGSMIdleBit();
- pc.printf("sending AT_CMGS\r\n");//&debug
- gsm.puts(AT_CMGS);
- gsm.puts("\r\n");
- gsm_current_state = GSM_AT_CMGS;
- }
- else{
- resetGSMIdleBit();
- gsm.puts(AT_CMGF);
- gsm.puts("\r\n");
- }
- }
+ if(findInQueue(AT_CMGF_RESPONSE))
+ gsm_current_state = GSM_AT_CMGS;
break;
-
- //check cmgs response if correct send SMS
case GSM_AT_CMGS:
- pc.printf("gsm_cmgs state\r\n");//&debug
- if(getGSMIdleBit()){
- printQueue(); //$debug
- if(findInQueue(AT_CMGS_RESPONSE)){
- resetGSMIdleBit();
- pc.printf("sending MESSAGE_BODY\r\n");//&debug
- gsm.puts(MESSAGE_BODY); //substitute
- gsm.puts("\r\n");
- flushQueue();
- gsm_current_state = GSM_AT_SENDSMS;
- }
- else
- {
- resetGSMIdleBit();
- gsm.puts(AT_CMGS);
- gsm.puts("\r\n");
- }
- }
+ pc.printf("gsm_cmgs state\r\n");//&debug
+ if(findInQueue(AT_CMGS_RESPONSE))
+ gsm_current_state = GSM_AT_SENDSMS;
break;
-
- //check if message was sent correctly and if so
case GSM_AT_SENDSMS:
pc.printf("gsm_send_sms state\r\n");//&debug
- if(getGSMIdleBit()){
- printQueue(); //$debug
-
- if(findInQueue(AT_SENDSMS_RESPONSE)){
- resetGSMIdleBit();
- gsm_current_state = GSM_SUCCESS;
- }
- else
- {
- resetGSMIdleBit();
- gsm.puts(AT_CMGF);
- gsm.puts("\r\n");
- gsm_current_state = GSM_AT_CMGS;
- }
- }
+ if(findInQueue(AT_SENDSMS_RESPONSE))
+ gsm_current_state = GSM_SUCCESS;
+ else
+ gsm_current_state = GSM_AT_CMGS; //The only spot we can go backwards
break;
-
-
case GSM_SUCCESS:
pc.printf("gsm_success state\r\n");//&debug
- if(findInQueue(AT_SENDSMS_RESPONSE)){
- pc.printf("sending message ID: %iY\r\n",parseInt());//&debug
- pc.printf("Message SENT!\r\n");//&debug
- }
- resetGSMIdleBit();
- gsm.puts(AT_CMGS);
- gsm.puts("\r\n");
- gsm_current_state = GSM_AT_CMGS;
+ if(findInQueue(AT_SENDSMS_RESPONSE)) //This appears to be a bug. It was in Danilo's original code as well.
+ pc.printf("Message SENT! msgID: %iY\r\n",parseInt());//&debug
+ gsm_current_state = GSM_AT_CMGS; //Confusing part. Do we always go backwards here?
break;
default:
pc.printf("This is a state error");
}
-
}
+
+//Mealy output logic ------------------------------------------------------
+void gsm_mealyOutputs()
+{
+ switch(gsm_current_state)
+ {
+ case GSM_INITIALIZE:
+ pc.printf("No Mealy initialize state output\r\n");//&debug
+ break;
+ case GSM_AT_OK:
+ pc.printf("sending AT_OK\r\n");//&debug
+ gsm.puts(AT_OK);
+ gsm.puts("\r\n");
+ break;
+ case GSM_AT_CSQ:
+ pc.printf("sending AT_CSQ\r\n");//&debug
+ gsm.puts(AT_CSQ);
+ gsm.puts("\r\n");
+ break;
+ case GSM_AT_CREG:
+ pc.printf("sending AT_CREG\r\n");//&debug
+ gsm.puts(AT_CREG);
+ gsm.puts("\r\n");
+ break;
+ case GSM_AT_CMGF:
+ pc.printf("sending AT_CMGF\r\n");//&debug
+ gsm.puts(AT_CMGF);
+ gsm.puts("\r\n");
+ break;
+ case GSM_AT_CMGS:
+ pc.printf("sending AT_CMGS\r\n");//&debug
+ gsm.puts(AT_CMGS);
+ gsm.puts("\r\n");
+ break;
+ case GSM_AT_SENDSMS:
+ pc.printf("sending MESSAGE_BODY\r\n");//&debug
+ gsm.puts(MESSAGE_BODY); //substitute char included
+ gsm.puts("\r\n");
+ break;
+ case GSM_SUCCESS:
+ pc.printf("No Mealy success state output\r\n");//&debug
+ default:
+ pc.printf("This is a state error");
+ }
+}
+
//set send falg on
void gsm_send_sms(){
send = 1;
}
+
//
void gsm_reset();
//
-void gsm_initialize(){
+void gsm_initialize(){
SIM_SCGC6 |= SIM_SCGC6_DMAMUX_MASK; //enabling dmamux clock
SIM_SCGC7 |= SIM_SCGC7_DMA_MASK; // enebaling dma clock
- pc.printf("initializing tregisters...!\r\n");
+ pc.printf("initializing registers...!\r\n");
// control register mux, enabling uart3 receive
DMAMUX_CHCFG0 |= DMAMUX_CHCFG_ENBL_MASK|DMAMUX_CHCFG_SOURCE(8);
@@ -243,8 +209,8 @@
DMA_TCD0_BITER_ELINKNO = DMA_BITER_ELINKNO_BITER(BUFFER_LENGTH);
// Adjustment value used to restore the source and destiny address to the initial value
// After reading 'len' number of times, the DMA goes back to the beginning by subtracting len*2 from the address (going back to the original address)
- DMA_TCD0_SLAST = 0; // Source address adjustment
- DMA_TCD0_DLASTSGA = -BUFFER_LENGTH; // Destination address adjustment
+ DMA_TCD0_SLAST = 0; // Source address adjustment
+ DMA_TCD0_DLASTSGA = -BUFFER_LENGTH; // Destination address adjustment
// Setup control and status register
DMA_TCD0_CSR = 0;
@@ -293,14 +259,14 @@
pc.printf("UART_C1_REG: %08x\r\n",UART_C1_REG(UART3));
pc.printf("UART_C2_REG: %08x\r\n",UART_C2_REG(UART3));
pc.printf("UART_S1_REG: %08x\r\n",UART_S1_REG(UART3));
- pc.printf("UART_s2_REG: %08x\r\n",UART_S2_REG(UART3));
+ pc.printf("UART_s2_REG: %08x\r\n",UART_S2_REG(UART3));
pc.printf("UART_C3_REG: %08x\r\n",UART_C3_REG(UART3));
pc.printf("UART_D_REG: %08x\r\n",UART_D_REG(UART3));
pc.printf("UART_MA1_REG: %08x\r\n",UART_MA1_REG(UART3));
pc.printf("UART_MA2_REG: %08x\r\n",UART_MA2_REG(UART3));
pc.printf("UART_C4_REG: %08x\r\n",UART_C4_REG(UART3));
pc.printf("UART_C5_REG: %08x\r\n",UART_C5_REG(UART3));
- pc.printf("UART_ED_REG: %08x\r\n",UART_ED_REG(UART3));
+ pc.printf("UART_ED_REG: %08x\r\n",UART_ED_REG(UART3));
pc.printf("UART_MODEM_REG: %08x\r\n",UART_MODEM_REG(UART3));
pc.printf("UART_IR_REG: %08x\r\n",UART_IR_REG(UART3));
pc.printf("UART_PFIFO_REG: %08x\r\n",UART_PFIFO_REG(UART3));