chaos avr: redefine 2nd parameter of hv_osc_init() as dc

git-svn-id: svn+ssh://asterix.ieap.uni-kiel.de/home/subversion/stephan/solo/eda/arm/avr@8894 bc5caf13-1734-44f8-af43-603852e9ee25

Makefile

@@ -59,8 +59,8 @@ lfuse_sologse=0xA0
 
 lfuse_chaos=0xef
 chaos_CFLAGS = -I.
-chaos.o: ads8688.h ltc1655.h spi_slave.h tick.h hvosc.h
-chaos.s: ads8688.h ltc1655.h spi_slave.h tick.h hvosc.h
+chaos.o: ads8688.h ltc1655.h spi_slave.h tick.h hvosc.h hvled.h
+chaos.s: ads8688.h ltc1655.h spi_slave.h tick.h hvosc.h hvled.h
 
 %.lfuse:
 	$(AVRDUDE) -p $(pMCU-$(MCU)) -P $(AVRDUDE_PORT) -c $(AVRDUDE_PROGRAMMER) \

chaos/ads8688.h

@@ -2,11 +2,11 @@
 #define ADC_SDI 4
 #define ADC_SCK 5
 #define ADC_CE  7
-#define ADC_SDO 2
+#define ADC_SDO 1
 #define ADC_PO PORTD
-#define ADC_PI PORTB
-#define PORTB_IO 0x05
-#define PORTD_IO 0x0b
+#define ADC_PI PORTD
+#define ADC_PO_IO _SFR_IO_ADDR(ADC_PO)
+#define ADC_PI_IO _SFR_IO_ADDR(ADC_PI)
 static inline void ads8688_init()
 {
 	DDRD |= 0xb0;
@@ -26,7 +26,7 @@ static inline void ads8688_write(unsigned char c, unsigned char i)
 		"nop"                   "\n\t"
 		"cbi %[p], %[ck]"       "\n"
 		:
-		:[p] "n" (PORTD_IO),
+		:[p] "n" (ADC_PO_IO),
 		 [d] "n" (ADC_SDI),
 		 [ck] "n" (ADC_SCK),
 		 [c] "r" (c),
@@ -34,12 +34,6 @@ static inline void ads8688_write(unsigned char c, unsigned char i)
 }
 static inline void ads8688_read(unsigned char *r, unsigned char *rr, unsigned char i)
 {
-#if 0
-	ADC_PO |= (1<<ADC_SCK);
-	if (ADC_PI & (1<<ADC_SDO)) *r |= 1<<i;
-	if (!(ADC_PI & (1<<ADC_SDO))) *r &=~(1<<i);
-	ADC_PO &=~ (1<<ADC_SCK);
-#else
        // qq is a dummy requested here to avoid load/store between bytes.
 	
 	__asm__("sbi %[pk], %[ck]"       "\n\t"
@@ -55,14 +49,13 @@ static inline void ads8688_read(unsigned char *r, unsigned char *rr, unsigned ch
 		"nop"                    "\n"
 		:[q]  "+d" (*r), // ORI needs r16..r31
 		 [qq] "+d" (*rr)
-		:[pk] "n" (PORTD_IO),
-		 [pd] "n" (PORTB_IO),
+		:[pk] "n" (ADC_PO_IO),
+		 [pd] "n" (ADC_PI_IO),
 		 [d]  "n" (ADC_SDO),
 		 [ck] "n" (ADC_SCK),
 		 [i]  "n" (1<<i),
 		 [ii] "n" (0xff&~(1<<i))
 		);
-#endif
 }
 
 static inline void ads8688_frame(const unsigned char *c, unsigned char *r)
@@ -92,7 +85,7 @@ static inline void ads8688_frame(const unsigned char *c, unsigned char *r)
 	__asm__("nop"                    "\n\t"
 		"cbi %[p], %[d]"         "\n"
 		:
-		:[p] "n" (PORTD_IO),
+		:[p] "n" (ADC_PO_IO),
 		 [d] "n" (ADC_SDI)
 		);
 

chaos/chaos.c

@@ -2,6 +2,8 @@
 
 // ATmega32M1
 
+#define upcase(c) (!((c)&0x20))
+
 const char *revision =
 	
 	"$Id$";
@@ -18,6 +20,7 @@ void ads8688_cmd(const unsigned char *c, unsigned char *r);
 void ltc1655_cmd(const unsigned char *c);
 void ads8688_config();
 
+#include "hvled.h"
 #include "tick.h"
 #include "hvosc.h"
 
@@ -46,7 +49,7 @@ static inline unsigned int avradc_data()
 {
 	unsigned int r = ADCL;
 	r |= ADCH << 8;
-	r |= ADMUX << 13;
+	r |= ADMUX << 11;
 	return r;
 }
 
@@ -105,7 +108,8 @@ struct {
 	unsigned char portc_on;
 	unsigned char portc_off;
 	unsigned char hvosc_freq;
-	unsigned char padding[1];
+	unsigned char hvosc_dc;
+	unsigned char padding[2];
 } conf = {
 	.wdt_timeout     = 10,    // 2 min
 	.wdt_tick_period = TICK_NS(100000L),   // 100µs
@@ -113,7 +117,8 @@ struct {
 	.avradc          = 0x7f,  // off
 	.adcconf         = 0x8500,// RST
 	.ddrc            = 2,     // OC1B HVOSC
-	.hvosc_freq      = 88,    // 125 kHz
+	.hvosc_freq      = 51,
+	.hvosc_dc        = 9,
 };
 
 enum {
@@ -127,6 +132,7 @@ enum {
 	FLAG2_PORTC  =   1,
 	FLAG2_PC_HV  =   2,
 	FLAG2_HVOSC  =   4,
+	FLAG2_HVLED  =   8,
 };
 
 void conf_init()
@@ -134,19 +140,23 @@ void conf_init()
 	tick_init(conf.tick_period);
 	if (conf.flags & FLAG_WDT)
 		wdt_init(conf.wdt_mode);
+	if (conf.flags2 & FLAG2_HVOSC) {
+		conf.ddrc |= 2;
+		hvosc_init(conf.hvosc_freq, conf.hvosc_dc);
+	}
+	if (conf.flags & FLAG_ADCCONF)
+		ads8688_config();
+	if (conf.flags & FLAG_DACADC)
+		conf.dac = dacadc_read();
 	if (conf.flags & FLAG_RAMP)
 		dac_ramp(conf.dac_nominal);
 	if (conf.flags & FLAG_ADC)
 		avradc_enable(conf.avradc);
 	if (conf.flags & FLAG_DAC)
 		avrdac_set(conf.avrdac);
-	if (conf.flags & FLAG_ADCCONF)
-		ads8688_config();
-	if (conf.flags & FLAG_DACADC)
-		conf.dac = dacadc_read();
-	if (conf.flags2 & FLAG2_HVOSC) {
-		conf.ddrc |= 2;
-		hvosc_init(conf.hvosc_freq);
+	if (conf.flags2 & FLAG2_HVLED) {
+		conf.ddrc |= LED_MASK;
+		led_init();
 	}
 	if (conf.flags2 & FLAG2_PORTC) {
 		PORTC = conf.portc;
@@ -154,6 +164,16 @@ void conf_init()
 	}
 }
 
+static inline void led_hv()
+{
+	if (conf.flags2 & FLAG2_HVLED) {
+		if (conf.dac == conf.dac_off)
+			led_toggle(LED_GREEN);
+		else
+			led_toggle(LED_RED);
+	}
+}
+
 unsigned long adc_sum[8];
 unsigned int adc_noise[8];
 unsigned char adc_n[8];
@@ -181,6 +201,7 @@ int main()
 		spi_slave_Rx(cmd, 3);
 		resp[0] = cmd[0];
 		sreg = disable_irq();
+		led_hv();
 		if (conf.wdt_mode == WDT_MODE_LIVE)
 			wdt_kick();
 		switch (cmd[0]) {
@@ -214,7 +235,7 @@ int main()
 			if (conf.flags2 & FLAG2_PC_HV)
 				PORTC = conf.portc_on;
 			if (conf.flags2 & FLAG2_HVOSC)
-				hvosc_init(conf.hvosc_freq);
+				hvosc_init(conf.hvosc_freq, conf.hvosc_dc);
 			int2frame(conf.dac, resp+1);
 			if (conf.wdt_mode >= WDT_MODE_HV)
 				wdt_kick();
@@ -223,10 +244,14 @@ int main()
 			dac_ramp(conf.dac_nominal);
 			continue;
 		case 'Q':
-			conf.hvosc_freq = frame2int(cmd+1);
 		case 'q':
-			int2frame(conf.hvosc_freq, resp+1);
-			hvosc_init(conf.hvosc_freq);
+			resp[1] = conf.hvosc_freq;
+			resp[2] = conf.hvosc_dc;
+			if (upcase(cmd[0])) {
+				conf.hvosc_freq = cmd[1];
+				conf.hvosc_dc = cmd[2];
+			}
+			hvosc_init(conf.hvosc_freq, conf.hvosc_dc);
 			break;
 		case 'I':
 			int2frame(tick_freq(), resp+1);
@@ -241,20 +266,17 @@ int main()
 			ads8688_cmd(cmd+1, resp+1);
 			break;
 		case 'T':
-			resp[1] = adc_status;
-			resp[2] = adc_error;
-			enable_irq(sreg);
-			spi_slave_Tx(resp, 3);
-			if (cmd[1])
-				adc_read(cmd[1], cmd[2]);
-			continue;
 		case 't':
 			resp[1] = adc_status;
 			resp[2] = adc_error;
 			enable_irq(sreg);
 			spi_slave_Tx(resp, 3);
-			if (cmd[1])
+			if (cmd[1]) {
+				if (upcase(cmd[0])) 
+					adc_read(cmd[1], cmd[2]);
+				else
 					adc_dac = dacadc_read();
+			}
 			continue;
 		case 'R':
 			c = cmd[1] & 7;
@@ -318,8 +340,12 @@ int main()
 				resp[2] = conf.padding[0];
 				break;
 			}
-			if (cmd[2]==1)
+			if (cmd[2]==1) {
+				enable_irq(sreg);
+				spi_slave_Tx(resp, 3);
 				conf_init();
+				continue;
+			}
 			break;
 		case 'B':
 			c = cmd[1] & 0x7f;
@@ -349,7 +375,9 @@ int main()
 				PORTC = conf.portc = cmd[2];
 				break;
 			case 'O':
+			case 'o':
 				resp[2] = DDRC;
+				if (upcase(cmd[1]))
 					DDRC = conf.ddrc = cmd[2];
 				break;
 			case 'A':
@@ -374,9 +402,12 @@ int main()
 				break;
 			}
 			break;
-		case 'Y':
+		case 'Y': // peek
+		case 'y': // poke
 			resp[1] = cmd[1];
 			resp[2] = *(unsigned char *)(cmd[1]+0);
+			if (!upcase(cmd[0]))
+				*(unsigned char *)(cmd[1]+0) = cmd[2];
 			break;
 		}
 		enable_irq(sreg);
@@ -497,7 +528,7 @@ ISR(WDT_vect)
 		if (conf.flags2 & FLAG2_PC_HV)
 			PORTC = conf.portc_off;
 		if (conf.flags2 & FLAG2_HVOSC)
-			hvosc_init(0);
+			hvosc_init(0, 0);
 	}
 	tick_init(conf.tick_period);
 	if (conf.wdt_save_addr && !wdt_saved) {

chaos/hvled.h

@@ -0,0 +1,33 @@
+#include "avr/io.h"
+#define LED1 2
+#define LED2 3
+#define LED_PORT PORTC
+#define LED_GREEN (1<<LED1)
+#define LED_RED   (1<<LED2)
+#define LED_MASK  (LED_GREEN | LED_RED)
+
+static inline void led_init()
+{
+	DDRC |= LED_MASK;
+}
+
+static uint8_t led_status()
+{
+	return LED_PORT & LED_MASK;
+}
+static inline void led_off()
+{
+	LED_PORT &=~ LED_MASK;
+}
+static inline void led_on(uint8_t color)
+{
+	LED_PORT &= ~(LED_MASK & ~color);
+	LED_PORT |= color;
+}
+static inline void led_toggle(uint8_t color)
+{
+	if (led_status() == color)
+		LED_PORT &=~ color;
+	else 
+		led_on(color);
+}

chaos/hvosc.h

@@ -1,19 +1,20 @@
 #include "avr/io.h"
 
-static inline void hvosc_init(unsigned char freq)
+static inline void hvosc_init(unsigned char freq, unsigned char dc)
 {
-	if (!freq) {
+	if (!dc || freq <= dc) {
 		TCCR1A = 0;
 		return;
 	}
 	PRR &=~ (1<<PRTIM1);
-	__asm__("NOP");
+	DDRC |= (1<<PC1);
+	DDRD |= (1<<PD2);
 	TCCR1A = (2<<COM1A0) | (3<<COM1B0) | (2<<WGM10);
-	TCCR1B = (1<<CS10) | (3<<WGM12);
+	TCCR1B = (1<<CS10) | (2<<WGM12);
 	ICR1H = 0;
 	ICR1L = freq;
 	OCR1AH = 0;
-	OCR1AL = freq>>1;
+	OCR1AL = dc;
 	OCR1BH = 0;
-	OCR1BL = freq>>1;
+	OCR1BL = freq-dc;
 }

chaos/ltc1655.h

@@ -2,8 +2,8 @@
 #define DAC_SDI 4
 #define DAC_SCK 5
 #define DAC_CE  6
-#define DAC_PO PORTD
-#define PORTD_IO 0x0b
+#define DAC_PORT PORTD
+#define DAC_PORT_IO _SFR_IO_ADDR(DAC_PORT)
 
 static inline void ltc1655_init()
 {
@@ -24,7 +24,7 @@ static inline void ltc1655_bit(unsigned char c, unsigned char i)
 		"nop"                   "\n\t"
 		"sbi %[p], %[k]"        "\n"
 		::
-		 [p] "n" (PORTD_IO),
+		 [p] "n" (DAC_PORT_IO),
 		 [d] "n" (DAC_SDI),
 		 [k] "n" (DAC_SCK),
 		 [c] "r" (c),
@@ -33,8 +33,8 @@ static inline void ltc1655_bit(unsigned char c, unsigned char i)
 
 static inline void ltc1655_frame(const unsigned char *c)
 {
-	DAC_PO &=~ (1<<DAC_SCK);
-	DAC_PO &=~ (1<<DAC_CE);
+	DAC_PORT &=~ (1<<DAC_SCK);
+	DAC_PORT &=~ (1<<DAC_CE);
 	ltc1655_bit(c[1],7);
 	ltc1655_bit(c[1],6);
 	ltc1655_bit(c[1],5);
@@ -58,6 +58,6 @@ static inline void ltc1655_frame(const unsigned char *c)
 		"nop"              "\n\t"
 		"nop"              "\n"
 		);
-	DAC_PO &=~ (1<<DAC_SCK);
-	DAC_PO |= (1<<DAC_CE);
+	DAC_PORT &=~ (1<<DAC_SCK);
+	DAC_PORT |= (1<<DAC_CE);
 }