PRODUCT=MicroPeak-v0.1
PRODUCT_DEF=-DMICROPEAK
CFLAGS = $(PRODUCT_DEF) -I. -I../attiny -I../core -I.. -I../drivers
-CFLAGS += -g -mmcu=$(MCU) -Wall -Wstrict-prototypes -O3 -mcall-prologues -DATTINY
+CFLAGS += -g -mmcu=$(MCU) -Wall -Wstrict-prototypes -O2 -mcall-prologues -DATTINY
NICKLE=nickle
#define AO_ASYNC_BAUD 38400l
#define AO_ASYNC_DELAY (uint8_t) (1000000l / AO_ASYNC_BAUD)
+#define LED_PORT PORTB
+
+void
+ao_async_start(void)
+{
+ LED_PORT |= (1 << AO_LED_SERIAL);
+}
+
+void
+ao_async_stop(void)
+{
+ LED_PORT &= ~(1 << AO_LED_SERIAL);
+}
+
void
ao_async_byte(uint8_t byte)
{
uint8_t b;
uint16_t w;
- /* start bit */
-
- /* start data stop */
- w = 0x001 | (byte << 1) | 0x000;
+ /* start data stop */
+ w = (0x000 << 0) | (byte << 1) | (0x001 << 9);
+ ao_arch_block_interrupts();
for (b = 0; b < 10; b++) {
- ao_led_set((w & 1) << AO_LED_SERIAL);
+ uint8_t v = LED_PORT & ~(1 << AO_LED_SERIAL);
+ v |= (w & 1) << AO_LED_SERIAL;
+ LED_PORT = v;
w >>= 1;
- ao_delay_us(26);
+
+ /* Carefully timed to hit around 9600 baud */
+ asm volatile ("nop");
+ asm volatile ("nop");
+
+ asm volatile ("nop");
+ asm volatile ("nop");
+ asm volatile ("nop");
+ asm volatile ("nop");
+ asm volatile ("nop");
+
+ asm volatile ("nop");
+ asm volatile ("nop");
+ asm volatile ("nop");
+ asm volatile ("nop");
+ asm volatile ("nop");
}
+ ao_arch_release_interrupts();
}
#ifndef _AO_ASYNC_H_
#define _AO_ASYNC_H_
+void
+ao_async_start(void);
+
+void
+ao_async_stop(void);
+
void
ao_async_byte(uint8_t byte);
}
}
+#define POLY 0x8408
+
+static uint16_t
+ao_log_micro_crc(uint16_t crc, uint8_t byte)
+{
+ uint8_t i;
+
+ for (i = 0; i < 8; i++) {
+ if ((crc & 0x0001) ^ (byte & 0x0001))
+ crc = (crc >> 1) ^ POLY;
+ else
+ crc = crc >> 1;
+ byte >>= 1;
+ }
+ return crc;
+}
+
+static void
+ao_log_hex_nibble(uint8_t b)
+{
+ if (b < 10)
+ ao_async_byte('0' + b);
+ else
+ ao_async_byte('a' - 10 + b);
+}
+
+static void
+ao_log_hex(uint8_t b)
+{
+ ao_log_hex_nibble(b>>4);
+ ao_log_hex_nibble(b&0xf);
+}
+
+static void
+ao_log_newline(void)
+{
+ ao_async_byte('\r');
+ ao_async_byte('\n');
+}
+
void
ao_log_micro_dump(void)
{
uint16_t nbytes;
uint8_t byte;
uint16_t b;
+ uint16_t crc = 0xffff;
ao_eeprom_read(N_SAMPLES_OFFSET, &n_samples, sizeof (n_samples));
+ if (n_samples == 0xffff)
+ n_samples = 0;
nbytes = STARTING_LOG_OFFSET + sizeof (uint16_t) * n_samples;
+ ao_async_start();
ao_async_byte('M');
ao_async_byte('P');
for (b = 0; b < nbytes; b++) {
+ if ((b & 0xf) == 0)
+ ao_log_newline();
ao_eeprom_read(b, &byte, 1);
- ao_async_byte(byte);
+ ao_log_hex(byte);
+ crc = ao_log_micro_crc(crc, byte);
}
+ ao_log_newline();
+ crc = ~crc;
+ ao_log_hex(crc >> 8);
+ ao_log_hex(crc);
+ ao_log_newline();
+ ao_async_stop();
}
#include <ao_micropeak.h>
#include <ao_ms5607.h>
#include <ao_log_micro.h>
+#include <ao_async.h>
static struct ao_ms5607_sample sample;
static struct ao_ms5607_value value;