src/README

This compiles with an up to date toolchain pulled from git.

TODO:
- Use the SPI hardware to talk to the sensor.
- Send results via UART hardware.
- Setup the watchdog.
- Control power to the RF transmitter
- Light the LED.
- Readout the ADCs, thermistors.
- Readout the internal temperature sensor.

.gitignore

@@ -10,3 +10,9 @@ gerber/*.gbr
 gerber/*.cnc
 gerber/*.zip
 gerber/*.pdf
+*.d
+*.hex
+*.map
+*.o
+*.s
+

gerber/turbo-bot.gvp

@@ -0,0 +1,60 @@
+(gerbv-file-version! "2.0A")
+(define-layer! 9 (cons 'filename "turbo.bottommask.gbr")
+	(cons 'inverted #t)
+	(cons 'visible #f)
+	(cons 'color #(0 57568 6070))
+	(cons 'alpha #(21588))
+)
+(define-layer! 8 (cons 'filename "turbo.bottom.gbr")
+	(cons 'visible #t)
+	(cons 'color #(45177 46748 64893))
+)
+(define-layer! 7 (cons 'filename "turbo.bottomsilk.gbr")
+	(cons 'visible #t)
+	(cons 'color #(0 0 0))
+)
+(define-layer! 6 (cons 'filename "turbo.top.gbr")
+	(cons 'visible #f)
+	(cons 'color #(65535 29244 28836))
+	(cons 'alpha #(42662))
+)
+(define-layer! 5 (cons 'filename "turbo.toppaste.gbr")
+	(cons 'visible #f)
+	(cons 'color #(65535 0 6760))
+)
+(define-layer! 4 (cons 'filename "turbo.topmask.gbr")
+	(cons 'inverted #t)
+	(cons 'visible #f)
+	(cons 'color #(0 64984 7760))
+	(cons 'alpha #(13364))
+)
+(define-layer! 3 (cons 'filename "turbo.plated-drill.cnc")
+	(cons 'visible #t)
+	(cons 'color #(61307 61307 61307))
+	(cons 'alpha #(65535))
+	(cons 'attribs (list
+		(list 'autodetect 'Boolean 1)
+		(list 'zero_suppression 'Enum 0)
+		(list 'units 'Enum 0)
+		(list 'digits 'Integer 4)
+	))
+)
+(define-layer! 2 (cons 'filename "turbo.topsilk.gbr")
+	(cons 'visible #f)
+	(cons 'color #(0 0 0))
+	(cons 'alpha #(55512))
+)
+(define-layer! 1 (cons 'filename "turbo.outline.gbr")
+	(cons 'visible #t)
+	(cons 'color #(0 0 0))
+	(cons 'alpha #(65535))
+)
+(define-layer! 0 (cons 'filename "turbo.fab.gbr")
+	(cons 'visible #f)
+	(cons 'color #(0 0 0))
+	(cons 'alpha #(65535))
+)
+(define-layer! -1 (cons 'filename "/home/falbala/stephan/eda/turbo_weather/gerber")
+	(cons 'color #(65535 65535 65535))
+)
+(set-render-type! 3)

gerber/turbo.gvp

@@ -2,31 +2,31 @@
 (define-layer! 8 (cons 'filename "turbo.bottommask.gbr")
 	(cons 'inverted #t)
 	(cons 'visible #f)
-	(cons 'color #(0 57568 6070 21588))
+	(cons 'color #(0 57568 6070))
 	(cons 'alpha #(21588))
 )
 (define-layer! 7 (cons 'filename "turbo.bottom.gbr")
 	(cons 'visible #t)
-	(cons 'color #(45177 46748 64893 45489))
+	(cons 'color #(45177 46748 64893))
 )
 (define-layer! 6 (cons 'filename "turbo.top.gbr")
 	(cons 'visible #t)
-	(cons 'color #(65535 29244 28836 42662))
+	(cons 'color #(65535 29244 28836))
 	(cons 'alpha #(42662))
 )
 (define-layer! 5 (cons 'filename "turbo.toppaste.gbr")
 	(cons 'visible #t)
-	(cons 'color #(65535 0 6760 45489))
+	(cons 'color #(65535 0 6760))
 )
 (define-layer! 4 (cons 'filename "turbo.topmask.gbr")
 	(cons 'inverted #t)
 	(cons 'visible #f)
-	(cons 'color #(0 64984 7760 13364))
+	(cons 'color #(0 64984 7760))
 	(cons 'alpha #(13364))
 )
 (define-layer! 3 (cons 'filename "turbo.plated-drill.cnc")
 	(cons 'visible #t)
-	(cons 'color #(61307 61307 61307 65535))
+	(cons 'color #(61307 61307 61307))
 	(cons 'alpha #(65535))
 	(cons 'attribs (list
 		(list 'autodetect 'Boolean 1)
@@ -37,20 +37,20 @@
 )
 (define-layer! 2 (cons 'filename "turbo.topsilk.gbr")
 	(cons 'visible #t)
-	(cons 'color #(0 0 0 55512))
+	(cons 'color #(0 0 0))
 	(cons 'alpha #(55512))
 )
 (define-layer! 1 (cons 'filename "turbo.outline.gbr")
 	(cons 'visible #t)
-	(cons 'color #(0 0 0 65535))
+	(cons 'color #(0 0 0))
 	(cons 'alpha #(65535))
 )
 (define-layer! 0 (cons 'filename "turbo.fab.gbr")
 	(cons 'visible #f)
-	(cons 'color #(0 0 0 65535))
+	(cons 'color #(0 0 0))
 	(cons 'alpha #(65535))
 )
 (define-layer! -1 (cons 'filename "/home/blaulicht/stephan/eda/turbo/gerber")
-	(cons 'color #(65535 65535 65535 0))
+	(cons 'color #(65535 65535 65535))
 )
 (set-render-type! 3)

gerber/turbo_bom.txt

@@ -1,6 +1,6 @@
 # PcbBOM Version 1.0
-# Date: So 18 Feb 2024 12:56:25 GMT UTC
+# Date: Mo 19 Feb 2024 12:52:50 GMT UTC
-# Author: 
+# Author: Stephan Boettcher
 # Title: TURBO - PCB BOM
 # Quantity, Description, Value, RefDes
 # --------------------------------------------

src/Makefile

@@ -0,0 +1,129 @@
+
+PROJ=bate
+
+default: all
+all: $(PROJ).hex
+
+SN_bate = 1
+MCU_bate = attiny424
+
+BATE_PERIOD=152
+bate_CFLAGS = -DPERIOD=$(BATE_PERIOD)
+SN_bate_wdt = $(SN_bate)
+MCU_bate_wdt =  $(MCU_bate)
+bate_wdt_CFLAGS = $(bate_CFLAGS)
+
+MCU = $(MCU_$(PROJ))
+
+CC=avr-gcc -v -Wall -Wno-parentheses -MMD -std=c99 -O3 \
+  -mmcu=$(MCU) \
+  -funsigned-char \
+  -funsigned-bitfields \
+  -fpack-struct \
+  -fshort-enums \
+  -mtiny-stack \
+  -mint8 \
+  -fverbose-asm
+
+SN = $(SN_$(PROJ))
+CFLAGS = $($*_CFLAGS) $(DEBUG) -I. -DSN="$(SN)"
+
+C_FILES = $(C_FILES_$(PROJ))
+OBJS = $(patsubst %.c, %.o, $(C_FILES))
+
+%.s: %.c
+	$(CC) $(CFLAGS) -S $<
+
+%.o: %.c
+	$(CC) -g $(CFLAGS) -c $<
+
+-include *.d
+
+LDFLAGS =
+
+%.elf: %.o $(OBJS)
+	$(CC) $(CFLAGS) -Wl,-Map=$*.map,--cref $^ --output $@ $(LDFLAGS)
+
+OBJCOPY = avr-objcopy
+
+%.hex: %.elf
+	$(OBJCOPY) -O ihex -R .eeprom $< $@
+
+
+pMCU-attiny414 = t414
+pMCU-attiny424 = t424
+
+#
+#avrdude> dump fuses
+#>>> dump fuses 0x0 0x9
+#
+#Reading | ################################################## | 100% 0.13 s 
+#
+#0000  00 00 7e ff ff f6 ff 00  00                       |..~......       |
+#
+#avrdude> 
+
+# WDT
+fuse0_bate= 0x00
+
+# BOD
+fuse1_bate= 0x00
+
+# OSC, 20 MHz
+fuse2_bate= 0x7e
+
+# ???
+fuse4_bate= 0xff
+
+# SYS0 (default 0xf6)  RESET, EEPROM erase
+fuse5_bate= 0xf7
+
+# SYS1 startup time (64ms)
+fuse6_bate= 0xff 
+
+# APPEND
+fuse7_bate= 0x00 
+
+# BOOTEND
+fuse8_bate= 0x00
+
+fuses_bate =$(patsubst %, 0x%, 00 00 7e ff ff f7 ff 00  00)
+
+AVRDUDEPROG = avrdude
+AVRDUDE = $(AVRDUDEPROG)
+AVRDUDE_PROGRAMMER = serialupdi
+AVRDUDE_PORT = /dev/ttyUSB1
+
+AD = $(AVRDUDE) -p $(pMCU-$(MCU)) -P $(AVRDUDE_PORT) -c $(AVRDUDE_PROGRAMMER)
+
+id: $(PROJ).id
+%.id:
+	$(AD) -B 5 -U fuses:v:"$(fuses_$*)":m
+
+ad: $(PROJ).ad
+%.ad:
+	$(AD) -v -t
+
+%.burn: %.hex
+	$(AD) -U flash:w:$<
+
+fuse: $(PROJ).fuse$F
+
+%.fuse$F:
+	echo "$*: fuse$F = $(fuse$F_$*)"
+	[ -n "$(fuse$F_$*)" ] && $(AD) -B 5 -U fuse$F:w:$(fuse$F_$*):m
+
+clean:
+	rm -f *.hex *.o *.s *.map *.elf *.d
+
+.PHONY: eeprom.eeprom
+eeprom.eeprom:
+	$(AVRDUDE) -p $(pMCU-$(MCU)) -P $(AVRDUDE_PORT) -c $(AVRDUDE_PROGRAMMER) \
+        -U eeprom:r:$@:r
+
+%.eeprom.burn: %.eeprom
+	$(AVRDUDE) -p $(pMCU-$(MCU)) -P $(AVRDUDE_PORT) -c $(AVRDUDE_PROGRAMMER) \
+        -U 'eeprom:v:$<:r' \
+     || $(AVRDUDE) -p $(pMCU-$(MCU)) -P $(AVRDUDE_PORT) -c $(AVRDUDE_PROGRAMMER) \
+        -U 'eeprom:w:$<:r'
+

src/README.md

@@ -0,0 +1,15 @@
+## Turbo Weather
+
+The ATtiny424 µC requires an up to date toolchain
+- binutits: `./configure --target=avr --program-prefix=avr-`
+- gcc: `../gcc/configure --program-prefix=avr- --with-avrlibc --target=avr --enable-languages=c --disable-nls`
+- avr-libc: `./configure --host=avr`
+
+TODO:
+- Use the SPI hardware to talk to the sensor.
+- Send results via UART hardware.
+- Setup the watchdog.
+- Control power to the RF transmitter
+- Light the LED.
+- Readout the ADCs, thermistors.
+- Readout the internal temperature sensor.

src/bate.c

@@ -0,0 +1,338 @@
+//
+// bate.c
+//
+
+// !!! int = int8_t
+
+#include <stdint.h>
+#include <avr/io.h>
+#include <avr/interrupt.h>
+#include <avr/sleep.h>
+#include <avr/wdt.h>
+
+#define Bit(x) (1<<(x))
+
+#define BATE_PORT PORTA
+#define SCK_PORT  3
+#define DOUT_PORT 2
+#define DIN_PORT  1
+
+////////////////////////////////////////////////////////////////////////////////
+//
+//  Timer1 generates a 32768 Hz clock on OC0A, PB0, MCLK_PORT, RES_PORT
+
+
+// The nominal f_{clkio} is 9.6 MHz,
+// f_{MCLK} needs to be 32768 Hz
+// f_{tick} needs to be 2×f_{MCLK}
+// Timer 1 TOP needs to be f_{clkio}/65536
+
+#ifndef PERIOD
+#    define PERIOD 153
+#endif
+
+// Save the calibrated period in EEPROM
+
+#define MCLK TCA0.SINGLE
+
+static inline
+void init_timer(uint8_t p)
+{
+	if (p < 120 || p > 200)
+		p = PERIOD;
+	PORTB.DIRSET = Bit(0);
+	MCLK.INTCTRL = TCA_SINGLE_CMP0_bm;
+	MCLK.CMP0 = p;
+	MCLK.CTRLA = TCA_SINGLE_CLKSEL_DIV2_gc;
+	MCLK.CTRLB = TCA_SINGLE_CMP0EN_bm | TCA_SINGLE_WGMODE_FRQ_gc;
+}
+
+volatile uint8_t tick;
+
+ISR(TCA0_CMP0_vect, ISR_NAKED)
+{
+	__asm__ ("push r24"         "\n\t"
+		 "ldi r24,1"        "\n\t"
+		 "sts %[tick], r24" "\n\t"
+		 "pop r24"          "\n\t"
+		 "reti"             "\n"
+		 :[tick] "+m" (tick)
+		);
+}
+
+/////////////////////////////////////////////////////////////////////////////
+//
+// Read data from an MS5534C pressure sensor
+
+union {
+       uint8_t b[16];
+       uint16_t w[8];
+       struct {
+               uint16_t H[2];  
+               uint16_t W[4];
+               uint16_t D[2];
+       };
+       struct {
+               uint16_t H1;
+               uint16_t H2;
+               uint16_t W1;
+               uint16_t W2;
+               uint16_t W3;
+               uint16_t W4;
+               uint16_t D1;
+               uint16_t D2;
+       };
+} bate;
+
+__attribute__ ((noinline, noclone))
+static
+uint8_t bate_bit(uint8_t r, uint8_t c, uint8_t ii)
+{
+#if 1
+	__asm__(
+/*
+ ;  bate.c:136: 	if (c&ii)
+	and r22,r20	 ;  _1, ii
+ ;  bate.c:137: 		BATE_PORT.OUTSET = Bit(DIN_PORT);
+	ldi r25,lo8(2)	 ;  tmp53,
+ ;  bate.c:136: 	if (c&ii)
+	cp r22, __zero_reg__	 ;  _1
+	breq .L2		 ; ,
+ ;  bate.c:137: 		BATE_PORT.OUTSET = Bit(DIN_PORT);
+	sts 1029,r25	 ;  MEM[(struct PORT_t *)1024B].OUTSET, tmp53
+ ;  bate.c:140: 	if (BATE_PORT.IN & Bit(DOUT_PORT))
+	lds r25,1032	 ;  _2, MEM[(struct PORT_t *)1024B].IN
+ ;  bate.c:140: 	if (BATE_PORT.IN & Bit(DOUT_PORT))
+	sbrs r25,2	 ;  _2,
+	rjmp .L4		 ; 
+.L7:
+ ;  bate.c:141: 		r |= ii;
+	or r24,r20		 ;  <retval>, ii
+ ;  bate.c:144: 	BATE_PORT.OUTSET =  Bit(SCK_PORT);
+	ldi r25,lo8(8)	 ;  tmp60,
+	sts 1029,r25	 ;  MEM[(struct PORT_t *)1024B].OUTSET, tmp60
+ ;  bate.c:145: 	BATE_PORT.OUTCLR =  Bit(SCK_PORT);
+	sts 1030,r25	 ;  MEM[(struct PORT_t *)1024B].OUTCLR, tmp60
+ ;  bate.c:149: }
+	ret	
+.L2:
+ ;  bate.c:139: 		BATE_PORT.OUTCLR = Bit(DIN_PORT);
+	sts 1030,r25	 ;  MEM[(struct PORT_t *)1024B].OUTCLR, tmp55
+ ;  bate.c:140: 	if (BATE_PORT.IN & Bit(DOUT_PORT))
+	lds r25,1032	 ;  _2, MEM[(struct PORT_t *)1024B].IN
+ ;  bate.c:140: 	if (BATE_PORT.IN & Bit(DOUT_PORT))
+	sbrc r25,2	 ;  _2,
+	rjmp .L7		 ; 
+.L4:
+ ;  bate.c:143: 		r &=~ ii;
+	com r20		 ;  _4
+ ;  bate.c:143: 		r &=~ ii;
+	and r24,r20	 ;  <retval>, _4
+ ;  bate.c:144: 	BATE_PORT.OUTSET =  Bit(SCK_PORT);
+	ldi r25,lo8(8)	 ;  tmp60,
+	sts 1029,r25	 ;  MEM[(struct PORT_t *)1024B].OUTSET, tmp60
+ ;  bate.c:145: 	BATE_PORT.OUTCLR =  Bit(SCK_PORT);
+	sts 1030,r25	 ;  MEM[(struct PORT_t *)1024B].OUTCLR, tmp60
+ ;  bate.c:149: }
+	ret	
+*/
+		"ldi r25, %[DI]"          "\n\t"
+		"and %[c], %[ii]"         "\n\t"
+		"brne .+6"                "\n\t"
+		"sts %[PC], r25"          "\n\t"
+		"breq .+6"                "\n\t"
+		"sts %[PS], r25"          "\n\t"
+		"nop"                     "\n\t"
+		"lds r25, %[PI]"          "\n\t"
+		"sbrc r25, %[DO]"         "\n\t"
+		"or %[r], %[ii]"          "\n\t"
+		"com %[ii]"               "\n\t"
+		"sbrs r25, %[DO]"         "\n\t"
+		"and  %[r], %[ii]"        "\n\t"
+		"ldi r25, %[SK]"          "\n\t"
+
+		"sts %[PS], r25"          "\n\t"
+
+		"nop"                     "\n\t"
+		"nop"                     "\n\t"
+		"nop"                     "\n\t"
+		"nop"                     "\n\t"
+		"nop"                     "\n\t"
+		"nop"                     "\n\t"
+		"nop"                     "\n\t"
+		"nop"                     "\n\t"
+		"nop"                     "\n\t"
+		"nop"                     "\n\t"
+		"nop"                     "\n\t"
+		"nop"                     "\n\t"
+		"nop"                     "\n\t"
+		"nop"                     "\n\t"
+		"nop"                     "\n\t"
+		"nop"                     "\n\t"
+		"nop"                     "\n\t"
+		"nop"                     "\n\t"
+		"nop"                     "\n\t"
+		"nop"                     "\n\t"
+		"nop"                     "\n\t"
+		"nop"                     "\n\t"
+		"nop"                     "\n\t"
+		"nop"                     "\n\t"
+		"nop"                     "\n\t"
+
+		"sts %[PC], r25"          "\n"
+		
+		:[r]   "+r" (r),
+		 [c]   "+r" (c)
+		:[ii]  "r" (ii),
+		 [PS]  "n" (&BATE_PORT.OUTSET),
+		 [PC]  "n" (&BATE_PORT.OUTCLR),
+		 [PI]  "n" (&BATE_PORT.IN),
+		 [DI]  "n" (Bit(DIN_PORT)),
+		 [DO]  "n" (DOUT_PORT),
+		 [SK]  "n" (Bit(SCK_PORT))
+		: "r25", "memory"
+		);
+#else
+	if (c&ii)
+		BATE_PORT.OUTSET = Bit(DIN_PORT);
+	else
+		BATE_PORT.OUTCLR = Bit(DIN_PORT);
+	if (BATE_PORT.IN & Bit(DOUT_PORT))
+		r |= ii;
+	else
+		r &=~ ii;
+	BATE_PORT.OUTSET =  Bit(SCK_PORT);
+	BATE_PORT.OUTCLR =  Bit(SCK_PORT);
+			
+#endif
+	return r;
+}
+
+__attribute__ ((noinline, noclone))
+static
+uint16_t bate_frame(uint16_t d, uint8_t n)
+{
+	n--;
+	uint8_t c0 = d;
+	uint8_t c1 = d >> 8;
+	uint8_t r0;
+	uint8_t r1;
+	// Force r0 and r1 to be cleared before the switch.  Else, the
+	// compiler generates extra jumps to clear r0 for each target.
+	__asm__("clr %[r0]"   "\n\t"
+		"clr %[r1]"   "\n"
+		:[r0] "=r" (r0),
+		 [r1] "=r" (r1)
+		);
+	switch (n) {
+	case 15: r1 = bate_bit(r1, c1, 1<<7);
+	case 14: r1 = bate_bit(r1, c1, 1<<6);
+	case 13: r1 = bate_bit(r1, c1, 1<<5);
+	case 12: r1 = bate_bit(r1, c1, 1<<4);
+	case 11: r1 = bate_bit(r1, c1, 1<<3);
+	case 10: r1 = bate_bit(r1, c1, 1<<2);
+	case  9: r1 = bate_bit(r1, c1, 1<<1);
+	case  8: r1 = bate_bit(r1, c1, 1<<0);
+	case  7: r0 = bate_bit(r0, c0, 1<<7);
+	case  6: r0 = bate_bit(r0, c0, 1<<6);
+	case  5: r0 = bate_bit(r0, c0, 1<<5);
+	case  4: r0 = bate_bit(r0, c0, 1<<4);
+	case  3: r0 = bate_bit(r0, c0, 1<<3);
+	case  2: r0 = bate_bit(r0, c0, 1<<2);
+	case  1: r0 = bate_bit(r0, c0, 1<<1);
+	case  0: r0 = bate_bit(r0, c0, 1<<0);
+	}
+	return (uint16_t)r1<<8 | r0;
+}
+
+__attribute__ ((noinline, noclone))
+static
+void bate_wait()
+{
+	uint16_t timeout = 3277; // 50ms
+	sei();
+	while (BATE_PORT.IN & Bit(DOUT_PORT)) {
+		if (tick) {
+			tick = 0;
+			if (!timeout)
+				break;
+//			wdt_reset();
+			timeout--;
+		}
+	}
+	cli();
+}
+
+static inline
+void read_bate()
+{
+	cli();
+	bate.H1 = 0x0001;
+	bate_frame(0xaaaa, 16);
+	bate_frame(0, 5);
+	bate_frame(0x3aa0, 14);
+	bate.W1 = bate_frame(0, 16);
+	bate_frame(0x3ac0, 14);
+	bate.W2 = bate_frame(0, 16);
+	bate_frame(0x3b20, 14);
+	bate.W3 = bate_frame(0, 16);
+	bate_frame(0x3b40, 14);
+	bate.W4 = bate_frame(0, 16);
+	bate_frame(0x0f40, 12);
+	bate.H1 = 0x0002;
+	bate_wait();
+	bate_frame(0,1);
+	bate.D1 = bate_frame(0, 16);
+	bate_frame(0x0f20, 12);
+	bate.H1 = 0x0003;
+	bate_wait();
+	bate_frame(0,1);
+	bate.D2 = bate_frame(0, 16);
+	bate.H1 = 0xba7e;
+#   ifndef WDT_TRIGGERED
+	bate.H2 += 1;
+#   endif
+}
+
+int main()
+{
+	BATE_PORT.DIRSET = Bit(SCK_PORT) | Bit(DIN_PORT);
+	init_timer(0);
+
+	// send some MCLKs before we start
+	uint8_t mclk_delay = 0xff;
+
+	set_sleep_mode(SLEEP_MODE_IDLE);
+	while (1) {
+		sleep_enable();
+		sei();
+		sleep_cpu();
+		if (!tick)
+			continue;
+		tick = 0;
+		wdt_reset();
+//		uart();
+//		if (uart_busy())
+//			continue;
+		if (mclk_delay) {
+			mclk_delay--;
+			continue;
+		}
+//		if (!trigger) {
+//#         ifndef WDT_TRIGGERED
+//			// wait for PCINT on PORT_OUT
+//			continue;
+//#	    else
+//			// power down, wait for the WDT
+//			MCUCR = Bit(SE) | SLEEP_MODE_PWR_DOWN;
+//			cli();
+//			sleep_cpu();
+//#          endif
+//		}
+//		trigger = 0;
+		// do a conversion and submit the result to uart()
+		read_bate();
+		mclk_delay = 0xff;
+//		send_bate();
+	}
+}

src/bate_wdt.c

@@ -0,0 +1,2 @@
+#define WDT_TRIGGERED 1
+#include "bate.c"

src/eeprom.h

@@ -0,0 +1,36 @@
+
+#include <stdint.h>
+#include <avr/io.h>
+#include <avr/eeprom.h>
+
+// Entirely unsafe EEPROM access. Just wait 5ms between calls
+// int = byte
+
+static inline
+void unsafe_eeprom_write_byte(uint8_t *addr, uint8_t data)
+{
+	EEARL = (uint8_t)(uint16_t)addr;
+	EEDR = data;
+	EECR |= (1<<EEMPE);
+	EECR |= (1<<EEPE);
+}
+
+static inline
+uint8_t unsafe_eeprom_read_byte(uint8_t *addr)
+{
+	EEARL = (uint8_t)(uint16_t)addr;
+	EECR |= (1<<EERE);
+	return EEDR;
+}
+
+static inline
+void unsafe_eeprom_read_block(void *dest, void *src, uint8_t size)
+{
+	uint8_t *d = dest;
+	uint8_t a = (uint8_t)(uint16_t)src;
+	while (size--) {
+		EEARL = a++;
+		EECR |= (1<<EERE);
+		*(d++) = EEDR;
+	}
+}

turbo.pcb

@@ -1,4 +1,4 @@
-# release: pcb v4.2.2-g125c85f1
+# release: pcb 4.3.0
 
 # To read pcb files, the pcb version (or the git source date) must be >= the file version
 FileVersion[20180318]
@@ -792,7 +792,7 @@ Symbol['~' 12.00mil]
 	SymbolLine[15.00mil 35.00mil 20.00mil 35.00mil 8.00mil]
 	SymbolLine[20.00mil 35.00mil 25.00mil 30.00mil 8.00mil]
 )
-Attribute("PCB::grid::unit" "mm")
+Attribute("PCB::grid::unit" "mil")
 Attribute("PCB::grid::size" "0.1000mm")
 Via[19.4000mm 27.0000mm 0.9000mm 0.4000mm 0.6000mm 0.4000mm "" "thermal(2X,3X)"]
 Via[25.8000mm 44.1000mm 0.9000mm 0.4000mm 0.6000mm 0.4000mm "" ""]
@@ -887,21 +887,21 @@ Element["" "SIL_100_4" "U3" "WRL-10534" 7.7500mm 16.0000mm 3.2500mm -0.3000mm 0
 
 Element["" "MS5534C" "U2" "MS5534C" 13.0000mm 43.7000mm -1.0000mm -1.0000mm 0 100 ""]
 (
-	Pad[3.6000mm 1.9100mm 5.4000mm 1.9100mm 1.0000mm 20.00mil 1.5080mm "SCLK" "2" "square,edge2"]
+	Pad[3.6000mm 1.9100mm 5.4000mm 1.9100mm 1.0000mm 20.00mil 46.00mil "SCLK" "2" "square,edge2"]
-	Pad[3.6000mm 3.1800mm 5.4000mm 3.1800mm 1.0000mm 20.00mil 1.5080mm "GND" "1" "square,edge2"]
+	Pad[3.6000mm 3.1800mm 5.4000mm 3.1800mm 1.0000mm 20.00mil 46.00mil "GND" "1" "square,edge2"]
-	Pad[3.6000mm 0.6400mm 5.4000mm 0.6400mm 1.0000mm 20.00mil 1.5080mm "DOUT" "3" "square,edge2"]
+	Pad[3.6000mm 0.6400mm 5.4000mm 0.6400mm 1.0000mm 20.00mil 46.00mil "DOUT" "3" "square,edge2"]
-	Pad[3.6000mm -1.9100mm 5.4000mm -1.9100mm 1.0000mm 20.00mil 1.5080mm "MCLK" "5" "square,edge2"]
+	Pad[3.6000mm -1.9100mm 5.4000mm -1.9100mm 1.0000mm 20.00mil 46.00mil "MCLK" "5" "square,edge2"]
-	Pad[3.6000mm -3.1800mm 5.4000mm -3.1800mm 1.0000mm 20.00mil 1.5080mm "VDD" "6" "square,edge2"]
+	Pad[3.6000mm -3.1800mm 5.4000mm -3.1800mm 1.0000mm 20.00mil 46.00mil "VDD" "6" "square,edge2"]
-	Pad[3.6000mm -0.6400mm 5.4000mm -0.6400mm 1.0000mm 20.00mil 1.5080mm "DIN" "4" "square,edge2"]
+	Pad[3.6000mm -0.6400mm 5.4000mm -0.6400mm 1.0000mm 20.00mil 46.00mil "DIN" "4" "square,edge2"]
-	Pad[-1.9000mm -4.5000mm -1.9000mm -4.2000mm 1.0000mm 20.00mil 1.5080mm "7" "7" "square"]
+	Pad[-1.9000mm -4.5000mm -1.9000mm -4.2000mm 1.0000mm 20.00mil 46.00mil "7" "7" "square"]
-	Pad[-5.1000mm 1.9100mm -4.6000mm 1.9100mm 1.0000mm 20.00mil 1.5080mm "13" "13" "square"]
+	Pad[-5.1000mm 1.9100mm -4.6000mm 1.9100mm 1.0000mm 20.00mil 46.00mil "13" "13" "square"]
-	Pad[-5.1000mm 3.1800mm -4.8000mm 3.1800mm 1.0000mm 20.00mil 1.5080mm "14" "14" "square"]
+	Pad[-5.1000mm 3.1800mm -4.8000mm 3.1800mm 1.0000mm 20.00mil 46.00mil "14" "14" "square"]
-	Pad[-5.1000mm 0.6400mm -4.6000mm 0.6400mm 1.0000mm 20.00mil 1.5080mm "12" "12" "square"]
+	Pad[-5.1000mm 0.6400mm -4.6000mm 0.6400mm 1.0000mm 20.00mil 46.00mil "12" "12" "square"]
-	Pad[-5.1000mm -1.9100mm -4.6000mm -1.9100mm 1.0000mm 20.00mil 1.5080mm "10" "10" "square"]
+	Pad[-5.1000mm -1.9100mm -4.6000mm -1.9100mm 1.0000mm 20.00mil 46.00mil "10" "10" "square"]
-	Pad[-5.1000mm -3.1800mm -4.6000mm -3.1800mm 1.0000mm 20.00mil 1.5080mm "9" "9" "square"]
+	Pad[-5.1000mm -3.1800mm -4.6000mm -3.1800mm 1.0000mm 20.00mil 46.00mil "9" "9" "square"]
-	Pad[-5.1000mm -0.6400mm -4.6000mm -0.6400mm 1.0000mm 20.00mil 1.5080mm "11" "11" "square"]
+	Pad[-5.1000mm -0.6400mm -4.6000mm -0.6400mm 1.0000mm 20.00mil 46.00mil "11" "11" "square"]
-	Pad[-3.5000mm 4.2000mm -3.5000mm 4.5000mm 1.0000mm 20.00mil 1.5080mm "8" "8" "square,edge2"]
+	Pad[-3.5000mm 4.2000mm -3.5000mm 4.5000mm 1.0000mm 20.00mil 46.00mil "8" "8" "square,edge2"]
-	Pad[-3.6500mm 3.0500mm -3.6500mm 4.6500mm 27.56mil 20.00mil 1.2080mm "8" "8" "square,edge2"]
+	Pad[-3.6500mm 3.0500mm -3.6500mm 4.6500mm 27.56mil 20.00mil 46.00mil "8" "8" "square,edge2"]
 	ElementLine [-4.0000mm -4.5000mm 4.0000mm -4.5000mm 0.2000mm]
 	ElementLine [-4.5000mm -4.0000mm -4.5000mm 4.0000mm 0.2000mm]
 	ElementLine [-4.0000mm 4.5000mm 4.0000mm 4.5000mm 0.2000mm]