From: Keith Packard Date: Fri, 14 Dec 2012 19:11:39 +0000 (-0800) Subject: altos: Log baro readings for MicroPeak X-Git-Tag: 1.1.9.3~8^2~9^2~49 X-Git-Url: https://git.gag.com/?p=fw%2Faltos;a=commitdiff_plain;h=fc2e5beb9173663e1e37a9b5a7b6eea1046222f7 altos: Log baro readings for MicroPeak This logs barometric data every 192ms (more or less) to the 504 remaining bytes of internal EEPROM storage in the ATtiny85. This provides 48.192 seconds of logging. Signed-off-by: Keith Packard --- diff --git a/src/micropeak/Makefile b/src/micropeak/Makefile index 0c48ed66..82944cb1 100644 --- a/src/micropeak/Makefile +++ b/src/micropeak/Makefile @@ -20,13 +20,6 @@ ifndef VERSION include ../Version endif -# Support for a logging EEPROM -# -#EEPROM_SRC=ao_async.c \ -# ao_i2c_attiny.c \ -# ao_at24c.c -# - ALTOS_SRC = \ ao_micropeak.c \ ao_spi_attiny.c \ @@ -39,7 +32,8 @@ ALTOS_SRC = \ ao_notask.c \ ao_eeprom_tiny.c \ ao_panic.c \ - $(EEPROM_SRC) + ao_log_micro.c \ + ao_async.c INC=\ ao.h \ @@ -48,6 +42,8 @@ INC=\ ao_arch_funcs.h \ ao_exti.h \ ao_ms5607.h \ + ao_log_micro.h \ + ao_micropeak.h \ altitude-pa.h IDPRODUCT=0 diff --git a/src/micropeak/ao_log_micro.c b/src/micropeak/ao_log_micro.c index eda0d1d2..40a7a35d 100644 --- a/src/micropeak/ao_log_micro.c +++ b/src/micropeak/ao_log_micro.c @@ -16,58 +16,53 @@ */ #include +#include #include #include -#if HAS_EEPROM - -ao_pos_t ao_log_micro_pos; +static uint16_t ao_log_offset = STARTING_LOG_OFFSET; void -ao_log_micro_data(uint32_t data) +ao_log_micro_save(void) { - ao_storage_write(ao_log_micro_pos, &data, sizeof (data)); - ao_log_micro_pos += sizeof (data); + uint16_t n_samples = (ao_log_offset - STARTING_LOG_OFFSET) / sizeof (uint16_t); + ao_eeprom_write(PA_GROUND_OFFSET, &pa_ground, sizeof (pa_ground)); + ao_eeprom_write(PA_MIN_OFFSET, &pa_min, sizeof (pa_min)); + ao_eeprom_write(N_SAMPLES_OFFSET, &n_samples, sizeof (n_samples)); } -uint32_t ao_log_last_ground; -uint32_t ao_log_last_done; - -uint8_t -ao_log_micro_scan(void) +void +ao_log_micro_restore(void) { - uint32_t data; - ao_pos_t pos; + ao_eeprom_read(PA_GROUND_OFFSET, &pa_ground, sizeof (pa_ground)); + ao_eeprom_read(PA_MIN_OFFSET, &pa_min, sizeof (pa_min)); +} - ao_storage_read(0, &data, sizeof (data)); - if ((data & AO_LOG_MICRO_MASK) != AO_LOG_MICRO_GROUND) - return 0; +void +ao_log_micro_data(void) +{ + uint16_t low_bits = pa; - ao_log_last_ground = data & ~(AO_LOG_MICRO_MASK); - for (pos = 4; pos < ao_storage_total; pos += 4) { - ao_storage_read(pos, &data, sizeof (data)); - if ((data & AO_LOG_MICRO_MASK) == AO_LOG_MICRO_GROUND) { - ao_log_last_done = data & ~(AO_LOG_MICRO_MASK); - return 1; - } + if (ao_log_offset < MAX_LOG_OFFSET) { + ao_eeprom_write(ao_log_offset, &low_bits, sizeof (low_bits)); + ao_log_offset += sizeof (low_bits); } - return 0; } void ao_log_micro_dump(void) { - ao_pos_t pos; - uint8_t data[4]; - uint8_t i; + uint16_t n_samples; + uint16_t nbytes; + uint8_t byte; + uint16_t b; - for (pos = 0; pos < ao_storage_total; pos += 4) { - ao_storage_read(pos, data, 4); - for (i = 0; i < 4; i++) - ao_async_byte(data[i]); - if (data[3] == (uint8_t) (AO_LOG_MICRO_GROUND >> 24)) - break; + ao_eeprom_read(N_SAMPLES_OFFSET, &n_samples, sizeof (n_samples)); + nbytes = STARTING_LOG_OFFSET + sizeof (uint16_t) * n_samples; + ao_async_byte('M'); + ao_async_byte('P'); + for (b = 0; b < nbytes; b++) { + ao_eeprom_read(b, &byte, 1); + ao_async_byte(byte); } } - -#endif diff --git a/src/micropeak/ao_log_micro.h b/src/micropeak/ao_log_micro.h index 15b2d178..976852ee 100644 --- a/src/micropeak/ao_log_micro.h +++ b/src/micropeak/ao_log_micro.h @@ -18,19 +18,20 @@ #ifndef _AO_LOG_MICRO_H_ #define _AO_LOG_MICRO_H_ -#define AO_LOG_MICRO_GROUND (0l << 24) -#define AO_LOG_MICRO_DATA (1l << 24) -#define AO_LOG_MICRO_DONE (0xaal << 24) -#define AO_LOG_MICRO_MASK (0xffl << 24) +#define PA_GROUND_OFFSET 0 +#define PA_MIN_OFFSET 4 +#define N_SAMPLES_OFFSET 8 +#define STARTING_LOG_OFFSET 10 +#define MAX_LOG_OFFSET 512 void -ao_log_micro_data(uint32_t data); +ao_log_micro_save(void); -extern uint32_t ao_log_last_ground; -extern uint32_t ao_log_last_done; +void +ao_log_micro_restore(void); -uint8_t -ao_log_micro_scan(void); +void +ao_log_micro_data(void); void ao_log_micro_dump(void); diff --git a/src/micropeak/ao_micropeak.c b/src/micropeak/ao_micropeak.c index 525cfa42..3bbc7eea 100644 --- a/src/micropeak/ao_micropeak.c +++ b/src/micropeak/ao_micropeak.c @@ -16,22 +16,22 @@ */ #include +#include #include #include static struct ao_ms5607_sample sample; static struct ao_ms5607_value value; -static uint32_t pa; -static uint32_t pa_sum; -static uint32_t pa_avg; -static int32_t pa_diff; -static uint32_t pa_ground; -static uint32_t pa_min; -static uint32_t pa_interval_min, pa_interval_max; -static alt_t ground_alt, max_alt; +uint32_t pa; +uint32_t pa_avg; +uint32_t pa_ground; +uint32_t pa_min; +alt_t ground_alt, max_alt; alt_t ao_max_height; +static uint32_t pa_sum; + static void ao_pa_get(void) { @@ -40,22 +40,6 @@ ao_pa_get(void) pa = value.pres; } -#define FILTER_SHIFT 3 -#define SAMPLE_SLEEP AO_MS_TO_TICKS(96) - -/* 16 sample, or about two seconds worth */ -#define GROUND_AVG_SHIFT 4 -#define GROUND_AVG (1 << GROUND_AVG_SHIFT) - -/* Pressure change (in Pa) to detect boost */ -#define BOOST_DETECT 120 /* 10m at sea level, 12m at 2000m */ - -/* Wait after power on before doing anything to give the user time to assemble the rocket */ -#define BOOST_DELAY AO_SEC_TO_TICKS(30) - -/* Pressure change (in Pa) to detect landing */ -#define LAND_DETECT 12 /* 1m at sea level, 1.2m at 2000m */ - static void ao_compute_height(void) { @@ -64,90 +48,30 @@ ao_compute_height(void) ao_max_height = max_alt - ground_alt; } -#if !HAS_EEPROM - -#define PA_GROUND_OFFSET 0 -#define PA_MIN_OFFSET 4 -#define N_SAMPLES_OFFSET 8 -#define STARTING_LOG_OFFSET 10 -#define MAX_LOG_OFFSET 512 - -static uint16_t ao_log_offset = STARTING_LOG_OFFSET; - -void -ao_save_flight(void) -{ - uint16_t n_samples = (ao_log_offset - STARTING_LOG_OFFSET) / sizeof (uint16_t); - ao_eeprom_write(PA_GROUND_OFFSET, &pa_ground, sizeof (pa_ground)); - ao_eeprom_write(PA_MIN_OFFSET, &pa_min, sizeof (pa_min)); - ao_eeprom_write(N_SAMPLES_OFFSET, &n_samples, sizeof (n_samples)); -} - -void -ao_restore_flight(void) -{ - ao_eeprom_read(PA_GROUND_OFFSET, &pa_ground, sizeof (pa_ground)); - ao_eeprom_read(PA_MIN_OFFSET, &pa_min, sizeof (pa_min)); -} - -void -ao_log_micro(void) -{ - uint16_t low_bits = pa; - - if (ao_log_offset < MAX_LOG_OFFSET) { - ao_eeprom_write(ao_log_offset, &low_bits, sizeof (low_bits)); - ao_log_offset += sizeof (low_bits); - } -} -#endif - int main(void) { int16_t sample_count; uint16_t time; -#if HAS_EEPROM - uint8_t dump_eeprom = 0; -#endif + uint32_t pa_interval_min, pa_interval_max; + int32_t pa_diff; + ao_led_init(LEDS_AVAILABLE); ao_timer_init(); -#if HAS_EEPROM - - /* Set MOSI and CLK as inputs with pull-ups */ - DDRB &= ~(1 << 0) | (1 << 2); - PORTB |= (1 << 0) | (1 << 2); - - /* Check to see if either MOSI or CLK are pulled low by the - * user shorting them to ground. If so, dump the eeprom out - * via the LED. Wait for the shorting wire to go away before - * continuing. - */ - while ((PINB & ((1 << 0) | (1 << 2))) != ((1 << 0) | (1 << 2))) - dump_eeprom = 1; - PORTB &= ~(1 << 0) | (1 << 2); - - ao_i2c_init(); -#endif - ao_restore_flight(); - ao_compute_height(); - /* Give the person a second to get their finger out of the way */ - ao_delay(AO_MS_TO_TICKS(1000)); - ao_report_altitude(); - + /* Init external hardware */ ao_spi_init(); ao_ms5607_init(); ao_ms5607_setup(); -#if HAS_EEPROM - ao_storage_init(); - - /* Check to see if there's a flight recorded in memory */ - if (dump_eeprom && ao_log_micro_scan()) - ao_log_micro_dump(); -#endif + /* Give the person a second to get their finger out of the way */ + ao_delay(AO_MS_TO_TICKS(1000)); + ao_log_micro_restore(); + ao_compute_height(); + ao_report_altitude(); + ao_log_micro_dump(); + ao_delay(BOOST_DELAY); /* Wait for motion, averaging values to get ground pressure */ time = ao_time(); @@ -182,10 +106,6 @@ main(void) pa_ground >>= FILTER_SHIFT; -#if HAS_EEPROM - ao_log_micro_data(AO_LOG_MICRO_GROUND | pa_ground); -#endif - /* Now sit around until the pressure is stable again and record the max */ sample_count = 0; @@ -200,12 +120,8 @@ main(void) ao_pa_get(); if ((sample_count & 3) == 0) ao_led_off(AO_LED_REPORT); -#if HAS_EEPROM - ao_log_micro_data(AO_LOG_MICRO_DATA | pa); -#else if (sample_count & 1) - ao_log_micro(); -#endif + ao_log_micro_data(); pa_avg = pa_avg - (pa_avg >> FILTER_SHIFT) + pa; if (pa_avg < pa_min) pa_min = pa_avg; @@ -228,10 +144,7 @@ main(void) } } pa_min >>= FILTER_SHIFT; -#if HAS_EEPROM - ao_log_micro_data(AO_LOG_MICRO_DONE | pa_min); -#endif - ao_save_flight(); + ao_log_micro_save(); ao_compute_height(); ao_report_altitude(); for (;;) { diff --git a/src/micropeak/ao_micropeak.h b/src/micropeak/ao_micropeak.h new file mode 100644 index 00000000..e408d7c5 --- /dev/null +++ b/src/micropeak/ao_micropeak.h @@ -0,0 +1,56 @@ +/* + * Copyright © 2012 Keith Packard + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ + +#ifndef _AO_MICROPEAK_H_ +#define _AO_MICROPEAK_H_ + +#define FILTER_SHIFT 3 +#define SAMPLE_SLEEP AO_MS_TO_TICKS(96) + +/* 16 sample, or about two seconds worth */ +#define GROUND_AVG_SHIFT 4 +#define GROUND_AVG (1 << GROUND_AVG_SHIFT) + +/* Pressure change (in Pa) to detect boost */ +#define BOOST_DETECT 120 /* 10m at sea level, 12m at 2000m */ + +/* Wait after power on before doing anything to give the user time to assemble the rocket */ +#define BOOST_DELAY AO_SEC_TO_TICKS(30) + +/* Pressure change (in Pa) to detect landing */ +#define LAND_DETECT 12 /* 1m at sea level, 1.2m at 2000m */ + +/* Current sensor pressure value */ +extern uint32_t pa; + +/* IIR filtered pressure value */ +extern uint32_t pa_avg; + +/* Average pressure value on ground */ +extern uint32_t pa_ground; + +/* Minimum recorded filtered pressure value */ +extern uint32_t pa_min; + +/* Pressure values converted to altitudes */ +extern alt_t ground_alt, max_alt; + +/* max_alt - ground_alt */ +extern alt_t ao_max_height; + +#endif +