templog: main.c comparison

comparison main.c @ 16:5075d8c428bd

untested, add comms timeout code

author	Matt Johnston <matt@ucc.asn.au>
date	Mon, 21 May 2012 07:52:51 +0800
parents	54b0fda9cba7
children	a5e3b363675d

comparison

equal deleted inserted replaced

-:54b0fda9cba7
+:5075d8c428bd
 #define VALUE_NOSENSOR -9000
 #define VALUE_BROKEN -8000
 #define COMMS_WAKE 3600
+#define WAKE_SECS 30
 #define BAUD 19200
 #define UBRR ((F_CPU)/8/(BAUD)-1)
 #define PORT_LED PORTC
 static int16_t measurements[NUM_MEASUREMENTS][MAX_SENSORS];
 // boolean flags
 static uint8_t need_measurement = 0;
 static uint8_t need_comms = 0;
-static uint8_t comms_done = 0;
+// counts down from WAKE_SECS to 0, goes to deep sleep when hits 0
+static uint8_t comms_timeout = 0;
 static uint8_t readpos = 0;
 static char readbuf[30];
 static uint8_t measure_count = 0;
 #define DEBUG(str) printf_P(PSTR(str))
 static void deep_sleep();
+// Very first setup
+static void
+setup_chip()
+{
+// Set clock to 2mhz
+cli();
+CLKPR = _BV(CLKPCE);
+// divide by 4
+CLKPR = _BV(CLKPS1);
+sei();
+DDR_LED |= _BV(PIN_LED);
+DDR_SHDN |= _BV(PIN_SHDN);
+}
+static void
+set_aux_power(uint8_t on)
+{
+if (on)
+{
+PORT_SHDN &= ~_BV(PIN_SHDN);
+}
+else
+{
+PORT_SHDN |= _BV(PIN_SHDN);
+}
+}
+static void
+setup_tick_counter()
+{
+// set up counter2.
+// COM21 COM20 Set OC2 on Compare Match (p116)
+// WGM21 Clear counter on compare
+//TCCR2A = _BV(COM2A1) | _BV(COM2A0) | _BV(WGM21);
+// toggle on match
+TCCR2A = _BV(COM2A0);
+// CS22 CS21 CS20  clk/1024
+TCCR2B = _BV(CS22) | _BV(CS21) | _BV(CS20);
+// set async mode
+ASSR |= _BV(AS2);
+TCNT2 = 0;
+OCR2A = SLEEP_COMPARE;
+// interrupt
+TIMSK2 = _BV(OCIE2A);
+}
 static void
 uart_on()
 {
 // Power reduction register
 //PRR &= ~_BV(PRUSART0);
+// All of this needs to be done each time after turning off the PRR
 // baud rate
 UBRR0H = (unsigned char)(UBRR >> 8);
 UBRR0L = (unsigned char)UBRR;
 // set 2x clock, improves accuracy of UBRR
 UCSR0A |= _BV(U2X0);
 static void
 cmd_btoff()
 {
 printf_P(PSTR("Turning off\n"));
 _delay_ms(50);
-PORTD |= _BV(PIN_SHDN);
+comms_timeout = 0;
-	comms_done = 1;
 }
 static void
 cmd_measure()
 {
 printf_P(PSTR("All sensors, ret %d, waiting...\n"), ret);
 long_delay(DS18B20_TCONV_12BIT);
 simple_ds18b20_read_all();
 }
+#if 0
 // 0 on success
 static uint8_t
 get_hex_string(const char *hex, uint8_t *out, uint8_t size)
 {
 uint8_t upper;
 printf_P(PSTR("Short hex\n"));
 return 1;
 }
 return 0;
 }
+#endif
 static void
 add_sensor(uint8_t *id)
 {
 uint8_t n;
 add_sensor(id);
 }
 }
 static void
-cmd_add_sensor(const char* hex_addr)
-{
-uint8_t id[ID_LEN];
-uint8_t ret = get_hex_string(hex_addr, id, ID_LEN);
-if (ret)
-{
-return;
-}
-add_sensor(id);
-}
-static void
 cmd_init()
 {
 printf_P(PSTR("Resetting sensor list\n"));
 uint8_t zero = 0;
 cli();
 uint16_t magic;
 eeprom_read(magic, magic);
 if (magic != EXPECT_MAGIC)
 {
 printf_P(PSTR("First boot, looking for sensors...\n"));
+// in case of power fumbles don't want to reset during eeprom write,
+long_delay(2);
 cmd_init();
 cmd_add_all();
 cli();
 magic = EXPECT_MAGIC;
 eeprom_write(magic, magic);
 sei();
 }
 }
 static void
-cmd_toggle()
-{
-PORT_SHDN ^= _BV(PIN_SHDN);
-printf_P(PSTR("toggling power 3.3v %d\n"), PORT_SHDN & _BV(PIN_SHDN));
-}
-static void
 read_handler()
 {
 if (strcmp_P(readbuf, PSTR("fetch")) == 0)
 {
 cmd_fetch();
 cmd_measure();
 }
 else if (strcmp_P(readbuf, PSTR("sensors")) == 0)
 {
 cmd_sensors();
-}
-else if (strcmp_P(readbuf, PSTR("toggle")) == 0)
-{
-cmd_toggle();
-}
-else if (strncmp_P(readbuf, PSTR("adds "), strlen("adds ")) == 0)
-{
-cmd_add_sensor(readbuf + strlen("adds "));
 }
 else if (strcmp_P(readbuf, PSTR("addall"))== 0)
 {
 cmd_add_all();
 }
 ISR(TIMER2_COMPA_vect)
 {
 TCNT2 = 0;
 measure_count ++;
 	comms_count ++;
-printf("measure_count %d\n", measure_count);
+if (comms_timeout != 0)
+{
+comms_timeout--;
+}
 if (measure_count >= MEASURE_WAKE)
 {
 measure_count = 0;
-printf("need_measurement = 1\n");
 need_measurement = 1;
 }
-	if (comms_count == COMMS_WAKE)
+	if (comms_count >= COMMS_WAKE)
 	{
 		comms_count = 0;
 		need_comms = 1;
 	}
 }
 DWORD get_fattime (void)
 {
 return 0;
 }
 static void
 do_comms()
 {
-	need_comms = 0;
 	// turn on bluetooth
 uart_on();
 	// write sd card here? same 3.3v regulator...
 printf("ready> \n");
-	comms_done = 0;
+	for (comms_timeout = WAKE_SECS; comms_timeout > 0;  )
-	for (;;)
 	{
-		if (comms_done)
-		{
-			break;
-		}
 if (need_measurement)
 {
 need_measurement = 0;
 printf("measure from do_comms\n");
 do_measurement();
 }
+// wait for commands from the master
 		idle_sleep();
 	}
 uart_off();
+set_aux_power(0);
-	// turn off bluetooth
 }
 static void
 blink()
 {
 {
 //uart_on();
 printf_P(PSTR("Bad interrupt\n"));
 }
-static void
-set_2mhz()
-{
-cli();
-CLKPR = _BV(CLKPCE);
-// divide by 4
-CLKPR = _BV(CLKPS1);
-sei();
-}
 int main(void)
 {
-set_2mhz();
+setup_chip();
-DDR_LED |= _BV(PIN_LED);
-DDR_SHDN |= _BV(PIN_SHDN);
 blink();
+set_aux_power(0);
 stdout = &mystdout;
 uart_on();
-fprintf_P(&mystdout, PSTR("hello %d\n"), 12);
+printf(PSTR("Started.\n"));
 check_first_startup();
 uart_off();
 //PRR = _BV(PRTWI) | _BV(PRTIM0) | _BV(PRTIM1) | _BV(PRSPI) | _BV(PRUSART0) | _BV(PRADC);
 // for testing
 uart_on();
+setup_tick_counter();
 sei();
-// set up counter2.
+#if 0
-// COM21 COM20 Set OC2 on Compare Match (p116)
-// WGM21 Clear counter on compare
-//TCCR2A = _BV(COM2A1) | _BV(COM2A0) | _BV(WGM21);
-// toggle on match
-TCCR2A = _BV(COM2A0);
-// CS22 CS21 CS20  clk/1024
-TCCR2B = _BV(CS22) | _BV(CS21) | _BV(CS20);
-// set async mode
-ASSR |= _BV(AS2);
-TCNT2 = 0;
-OCR2A = SLEEP_COMPARE;
-// interrupt
-TIMSK2 = _BV(OCIE2A);
 for (;;)
 {
 do_comms();
 }
+#endif
-for(;;){
-/* insert your main loop code here */
+for(;;)
+{
 if (need_measurement)
 {
 need_measurement = 0;
 do_measurement();
-// testing
-cmd_fetch();
 			continue;
 }
 if (need_comms)
 {
+need_comms = 0;
 do_comms();
 			continue;
 }
 		deep_sleep();

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comparison main.c @ 16:5075d8c428bd