Jean Mercier
Generate up to 8 different digital waeforms from serial port
Diff: jmPulse.c
- Revision:
- 0:374d47623fab
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/jmPulse.c Sat Feb 12 16:41:07 2011 +0000
@@ -0,0 +1,247 @@
+/**
+ * @file jmPulse.c
+ * @version 1.0
+ * @date Feb 12, 2011
+ */
+
+#include "jmPulse.h"
+#include "jmRingBuffer.h"
+#include "LPC17xx.h"
+#include "main.h"
+#include "jmCommands.h"
+#include "jmMessages.h"
+#include "jmRingBuffer.h"
+#include "stdio.h"
+
+#ifndef nonStop
+ #define nonStop 65535 // for continuous mode operation
+#endif
+
+// output defenitions
+#define Low 0
+#define High 1
+#define StatusOffset 3
+
+// State definitions
+#define puNotInit 0
+#define puStopped 2
+#define Pulse 1
+
+struct StructPulse sPulse[pulseQty]; // static creation
+
+/** Module Data Structure Initialization
+ * @brief All State Machines put to sleep.
+ * @param[in] none
+ * @returns none
+ */
+void PulseInit(void){
+ int i;
+ for(i=0;i<pulseQty;i++){
+ sPulse[i].state = puNotInit;
+ }
+}
+
+/**
+ * @brief Stop one or all pulse Machines
+ * @param[in] Extracted from command line (Pulse Number)0..7 255 for all
+ * @returns Return Message: GPPP0 id pin tOn tOff status
+ */
+void cli_PulseStop(void){
+ unsigned int id,i;
+
+ if(ExtractUInteger(pLine,&id,0,255)){ // extract pulseNumber
+ // put id pulse machine to sleep
+ if(id < pulseQty){
+ sPulse[id].cycles = 0;
+ sPulse[id].state = puStopped;
+ rGPPP0(id);
+ return;
+ }
+
+ if(id == 255){
+ // stop all controllers
+ for(i=0;i<pulseQty;i++){
+ sPulse[i].cycles = 0;
+ sPulse[i].state = puStopped;
+ }
+ }
+
+ cli_GPPP0(); // Return 8 Messages: GPPP0 id pin tOn tOff status
+ return;
+ }
+ if(Help)printf("pulseStop (Pulse number)0..%d \n",pulseQty-1);
+ // Ignore pending command line
+ NextCommand(nl,pLine);
+}
+
+
+/** Module Pulse Command Line Interface
+ * @brief Command Line Interface to control PWM/Pulse on output pins.
+ * @param[in] Extracted from command line (Pulse Controller Number)0..7 (Pin id)0..432 (tOn)0..255 (tOff)0..255) (cycles)1..65535
+ * @returns none
+ */
+void cli_Pulse(void){
+ unsigned int pulseNum, pinNumber,tOn,tOff,cycles;
+ if(ExtractUInteger(pLine,&pulseNum,0,pulseQty-1)){ // extract pulseNumber
+ if(ExtractUInteger(pLine,&pinNumber,0,432)){ // extract pin id
+ if(ExtractUInteger(pLine,&tOn,0,255)){ // extract tOn
+ if(ExtractUInteger(pLine,&tOff,0,255)){ // extract tOff
+ // extract cycles and test for nonStop mode
+ if(!ExtractUInteger(pLine,&cycles,1,65535))cycles = nonStop;
+
+ SetPulseParam(pulseNum, pinNumber, tOn, tOff, cycles);
+ if(Feedback)printf("pulse %d Pin%d tOn:%d tOff:%d Cycles:%d\n",pulseNum,pinNumber,tOn,tOff,cycles);
+ return;
+ }
+ }
+ }
+ }
+ if(Help)printf("pulse (Pulse number)0..%d (Pin id)0..432 (tOn)0..255 (tOff)0..255 (Cycles)[1..0xFFFF]\n",pulseQty-1);
+ // Ignore pending command line
+ NextCommand(nl,pLine);
+}
+
+/** Module Parameter Setting Function
+ * @brief Enables PWM/pulse State Machine,
+ * Also sets mbed pin as outputs.
+ * @param[in] num pulse controller number (value)0..7
+ * @param[in] pin pin id (value)0..432
+ * @param[in] tOn on time interval in ticks (tOn)0..255
+ * @param[in] tOff off time interval in ticks (tOff)0..255
+ * @param[in] cycles repetition number of tOn-tOff cycles
+ * @param[in] state set state: inactive, pulse, high, low
+ * @returns Return Message: GPPP0 id pin state
+ */
+void SetPulseParam(uint8_t num, uint16_t pin, uint8_t tOn, uint8_t tOff, uint16_t cycles){
+ // Get port and bit for that pin
+ uint32_t bitValue;
+ uint8_t port;
+
+ // Get port, bit and bit value
+ port = pin/100;
+ bitValue = 1<<(pin%100);
+
+ sPulse[num].port = jmGPIO[port];
+ sPulse[num].pin = (uint8_t)pin;
+ sPulse[num].bitValue = bitValue;
+
+ // set mbed pin direction as output
+ jmGPIO[port]->FIODIR |= bitValue;
+ // make sure FIOMASK bit is enable
+ jmGPIO[port]->FIOMASK &= ~bitValue;
+
+
+ // Low State
+ if(tOn == 0 && tOff != 0)
+ {
+ jmGPIO[port]->FIOPIN &= ~bitValue; // reset pin low
+ sPulse[num].output = Low;
+ sPulse[num].state = puStopped;
+ }
+ // High State
+ if(tOn != 0 && tOff == 0)
+ {
+ jmGPIO[port]->FIOPIN |= bitValue; // set pin High
+ sPulse[num].output = High;
+ sPulse[num].state = puStopped;
+ }
+ // Toggle output
+ if(tOn == 0 && tOff == 0)
+ {
+ jmGPIO[port]->FIOPIN ^= bitValue; // toggle pin
+ // Toggle state
+ if(sPulse[num].output == High)sPulse[num].output = Low;
+ else sPulse[num].output = High;
+ sPulse[num].state = puStopped;
+ }
+ // Start Pulse controller
+ if(tOn != 0 && tOff != 0 && cycles !=0){
+ sPulse[num].state = Pulse;
+ sPulse[num].tOn = (uint8_t)tOn;
+ sPulse[num].tOff = (uint8_t)tOff;
+ sPulse[num].cycles = (uint16_t)cycles;
+ sPulse[num].eggTimer = 0;
+ }
+ // Stop Pulse controller
+ if(tOn != 0 && tOff != 0 && cycles ==0){
+ sPulse[num].cycles = 0;
+ sPulse[num].state = puStopped;
+ }
+
+ // Report process modification
+ rGPPP0(num); //Return Message: GPPP0 id pin tOn tOff status
+}
+
+/***********************************************************************
+ * @brief Module State Machine.
+ * Enable different pwm/pulse rates concurrently.
+ * @param none
+ * @returns When cycles Done, Return Message: GPPP0 id pin tOn tOff status
+ */
+void PulseSM(void){
+ int i;
+ for(i=0;i<pulseQty;i++){ // for each SM define by pins
+
+ if(sPulse[i].state == puStopped) continue; //controller running ?
+
+ if(sPulse[i].cycles!=0){ // Cycles to DO ?
+ switch(sPulse[i].output){
+
+ // output is low
+ case Low: if(sPulse[i].eggTimer==0){ // time to change ?
+ sPulse[i].port->FIOPIN |= sPulse[i].bitValue; // set pin High
+ sPulse[i].eggTimer=sPulse[i].tOn; // load timer with tOn
+ sPulse[i].output=High; // udpate structure
+ }
+ break;
+
+ // output is High
+ case High: if(sPulse[i].eggTimer==0){ // time to change ?
+ sPulse[i].port->FIOPIN &= ~sPulse[i].bitValue; // reset pin low
+ sPulse[i].output=Low; // update structure
+ sPulse[i].eggTimer=sPulse[i].tOff; // load timer with tOff
+ if(sPulse[i].cycles != nonStop){ // continuous mode ?
+ if(--sPulse[i].cycles == 0){ // decrease qty if not continuous mode
+ sPulse[i].state = puStopped; // stop controller
+ // report end of cycles
+ rGPPP0(i); //Message: GPPP0 id pin tOn tOff status
+ }
+ }
+ }
+ break;
+ }//switch
+ }//if cycles
+ }//for
+}//PulseSM
+
+/** Module Get Module Process Properties Command Line Interface
+ * @brief Command Line Interface to Get Module Public Process Properties
+ * @param[in] Extracted from command line GPPP0 id
+ * @returns Message: GPPP0 id pin tOn tOff status
+ */
+void cli_GPPP0(void)
+{ unsigned int id;
+ if(ExtractUInteger(pLine,&id,0,7)){ // extract pulse id Number
+ rGPPP0(id); //Message: GPPP0 id pin tOn tOff status
+ return;
+ }
+
+ if(Help)printf("GPPP0 (Pulse id)0..%d\n",pulseQty-1);
+ // Ignore pending command line
+ NextCommand(nl,pLine);
+}
+
+/** Public Properties Message
+ * @brief Send Process Properties to update GUI
+ * @param[in] id Process identification
+ * @returns Message: GPPP0 id pin tOn tOff status
+ */
+void rGPPP0(unsigned int id ){
+ int status;
+ if(id < pulseQty){
+ if( sPulse[id].state == puStopped)status = sPulse[id].output +StatusOffset;
+ else status = sPulse[id].state;
+ printf("GPPP0 %d %d %d %d %d\n",id,sPulse[id].pin,sPulse[id].tOn,sPulse[id].tOff,status);
+
+ }
+}