#include "watch.h"
#include "watch_utility.h"
#include "spiflash.h"
+#include "lis2dw.h"
-#define ACCELEROMETER_TRAINING_RECORD_DELETED ((uint64_t)(0b00))
-#define ACCELEROMETER_TRAINING_RECORD_DATA ((uint64_t)(0b01))
-#define ACCELEROMETER_TRAINING_RECORD_HEADER ((uint64_t)(0b10))
-#define ACCELEROMETER_TRAINING_RECORD_INVALID ((uint64_t)(0b11))
+#define ACCELEROMETER_DATA_ACQUISITION_INVALID ((uint64_t)(0b11)) // all bits are 1 when the flash is erased
+#define ACCELEROMETER_DATA_ACQUISITION_HEADER ((uint64_t)(0b10))
+#define ACCELEROMETER_DATA_ACQUISITION_DATA ((uint64_t)(0b01))
+#define ACCELEROMETER_DATA_ACQUISITION_DELETED ((uint64_t)(0b00)) // You can always write a 0 to any 1 bit
typedef union {
struct {
- int16_t temperature : 16;
- int8_t char1 : 8;
- int8_t char2 : 8;
- int32_t timestamp : 32;
+ struct {
+ uint16_t record_type : 2; // see above, helps us identify record types when reading back
+ uint16_t range : 2; // accelerometer range (see lis2dw_range_t)
+ uint16_t temperature : 12; // raw value from the temperature sensor
+ } info;
+ uint8_t char1 : 8; // First character of the activity type
+ uint8_t char2 : 8; // Second character of the activity type
+ uint32_t timestamp : 32; // UNIX timestamp for the measurement
} header;
struct {
- int16_t x_accel : 16;
- int16_t y_accel : 16;
- int16_t z_accel : 16;
- int32_t counter : 16;
+ struct {
+ uint16_t record_type : 2; // duplicate; this is the same field as info above
+ uint16_t accel : 14; // X acceleration value, raw, offset by 16384
+ } x;
+ struct {
+ uint16_t lpmode : 2; // low power mode (see lis2dw_low_power_mode_t)
+ uint16_t accel : 14; // Y acceleration value, raw, offset by 16384
+ } y;
+ struct {
+ uint16_t filter : 2; // bandwidth filtering selection (see lis2dw_bandwidth_filtering_mode_t)
+ uint16_t accel : 14; // Z acceleration value, raw, offset by 16384
+ } z;
+ uint32_t counter : 16; // number of seconds since timestamp in header
} data;
uint64_t value;
-} acceleromter_training_record_t;
-
-static void cb_alarm_pressed(void) {
- printf("Alarm button was pressed!\n");
-}
+} accelerometer_data_acquisition_record_t;
static bool wait_for_flash_ready(void) {
watch_set_pin_level(A3, false);
return ok;
}
+static void write_buffer_to_page(uint8_t *buf, uint16_t page) {
+ uint32_t address = 256 * page;
+
+ wait_for_flash_ready();
+ watch_set_pin_level(A3, false);
+ spi_flash_command(CMD_ENABLE_WRITE);
+ wait_for_flash_ready();
+ watch_set_pin_level(A3, false);
+ spi_flash_write_data(address, buf, 256);
+ wait_for_flash_ready();
+
+ uint8_t buf2[256];
+ watch_set_pin_level(A3, false);
+ spi_flash_read_data(address, buf2, 256);
+ wait_for_flash_ready();
+
+ uint8_t used_pages[256] = {0xFF};
+ uint16_t address_to_mark_used = page / 8;
+ uint8_t header_page = address_to_mark_used / 256;
+ uint8_t used_byte = 0x7F >> (page % 8);
+ uint8_t offset_in_buf = address_to_mark_used % 256;
+
+ watch_set_pin_level(A3, false);
+ spi_flash_read_data(header_page * 256, used_pages, 256);
+ used_pages[offset_in_buf] = used_byte;
+ watch_set_pin_level(A3, false);
+ spi_flash_command(CMD_ENABLE_WRITE);
+ wait_for_flash_ready();
+ watch_set_pin_level(A3, false);
+ spi_flash_write_data(header_page * 256, used_pages, 256);
+ wait_for_flash_ready();
+}
+
static void print_records_at_page(uint16_t page) {
- if (page < 650) return;
- acceleromter_training_record_t records[32];
- static uint32_t timestamp = 0;
- static uint16_t temperature = 0;
+ accelerometer_data_acquisition_record_t records[32];
+ static uint64_t timestamp = 0;
+ // static uint16_t temperature = 0;
+ static lis2dw_range_t range = LIS2DW_RANGE_2_G;
+ static double lsb_value = 1;
+ static bool printing_header = false;
+
wait_for_flash_ready();
spi_flash_read_data(page * 256, (void *)records, 256);
for(int i = 0; i < 32; i++) {
- switch (records[i].header.temperature >> 14) {
- case ACCELEROMETER_TRAINING_RECORD_DELETED:
- break;
- case ACCELEROMETER_TRAINING_RECORD_DATA:
- printf("%ld,%d,%d,%d,%d\n", timestamp + records[i].data.counter, records[i].data.x_accel, records[i].data.y_accel, records[i].data.z_accel, temperature);
- break;
- case ACCELEROMETER_TRAINING_RECORD_HEADER:
- printf("=== BEGIN %c%c EVENT AT %d ===\n", records[i].header.char1, records[i].header.char2, records[i].header.timestamp);
- printf("timestamp,x_raw,y_raw,z_raw,temperature\n");
+ switch (records[i].header.info.record_type) {
+ case ACCELEROMETER_DATA_ACQUISITION_HEADER:
+ printing_header = true;
timestamp = records[i].header.timestamp;
- temperature = records[i].header.temperature & 0x3FFF;
+ // temperature = records[i].header.info.temperature;
+ printf("%c%c.sample%lld.", records[i].header.char1, records[i].header.char2, timestamp);
+ range = records[i].header.info.range;
break;
- case ACCELEROMETER_TRAINING_RECORD_INVALID:
- printf(",,,,\n");
+ case ACCELEROMETER_DATA_ACQUISITION_DATA:
+ if (printing_header) {
+ printing_header = false;
+ uint8_t filter = 0;
+ switch (records[i].data.z.filter) {
+ case LIS2DW_BANDWIDTH_FILTER_DIV2:
+ filter = 2;
+ break;
+ case LIS2DW_BANDWIDTH_FILTER_DIV4:
+ filter = 4;
+ break;
+ case LIS2DW_BANDWIDTH_FILTER_DIV10:
+ filter = 10;
+ break;
+ case LIS2DW_BANDWIDTH_FILTER_DIV20:
+ filter = 20;
+ break;
+ }
+ switch (range) {
+ case LIS2DW_RANGE_16_G:
+ lsb_value = (records[i].data.y.lpmode == LIS2DW_LP_MODE_1) ? 7.808 : 1.952;
+ break;
+ case LIS2DW_RANGE_8_G:
+ lsb_value = (records[i].data.y.lpmode == LIS2DW_LP_MODE_1) ? 3.904 : 0.976;
+ break;
+ case LIS2DW_RANGE_4_G:
+ lsb_value = (records[i].data.y.lpmode == LIS2DW_LP_MODE_1) ? 1.952 : 0.488;
+ break;
+ case LIS2DW_RANGE_2_G:
+ lsb_value = (records[i].data.y.lpmode == LIS2DW_LP_MODE_1) ? 0.976 : 0.244;
+ break;
+ }
+ printf("RANGE%d_LP%d_FILT%d.CSV\n", range, records[i].data.y.lpmode + 1, filter);
+ printf("timestamp,accX,accY,accZ\n");
+ }
+ printf("%lld,%f,%f,%f\n",
+ (timestamp * 100 + records[i].data.counter) * 10,
+ 9.80665 * ((double)(records[i].data.x.accel - 8192)) * lsb_value / 1000,
+ 9.80665 * ((double)(records[i].data.y.accel - 8192)) * lsb_value / 1000,
+ 9.80665 * ((double)(records[i].data.z.accel - 8192)) * lsb_value / 1000);
+ break;
+ case ACCELEROMETER_DATA_ACQUISITION_INVALID:
+ case ACCELEROMETER_DATA_ACQUISITION_DELETED:
+ // don't print anything
break;
}
+ records[i].header.info.record_type = ACCELEROMETER_DATA_ACQUISITION_DELETED;
}
+
+ // uncomment this to mark all pages deleted
+ // write_buffer_to_page((uint8_t *)records, page);
}
static void print_records() {
pages_written <<= 4;
start = 4;
}
- for(int k = start; k < 7; k++) {
+ for(int k = start; k < 8; k++) {
if ((pages_written & 0x80) == 0) {
print_records_at_page(i * 2048 + j * 8 + k);
}
}
void app_init(void) {
- delay_ms(5000);
- spi_flash_init();
- watch_register_extwake_callback(BTN_ALARM, cb_alarm_pressed, true);
-
- bool erase = false;
- if (erase) {
- printf("Erasing...\n");
- wait_for_flash_ready();
- watch_set_pin_level(A3, false);
- spi_flash_command(CMD_ENABLE_WRITE);
- wait_for_flash_ready();
- watch_set_pin_level(A3, false);
- spi_flash_command(CMD_CHIP_ERASE);
- delay_ms(10000);
- }
-
- uint8_t buf[256] = {0xFF};
-
- wait_for_flash_ready();
- spi_flash_read_data(0, buf, 256);
- printf("byte 0 was %02x\n", buf[0]);
- if (buf[0] & 0xF0) {
- buf[0] = 0x0F;
- printf("setting it to 0x0F\n");
- wait_for_flash_ready();
- watch_set_pin_level(A3, false);
- spi_flash_command(CMD_ENABLE_WRITE);
- wait_for_flash_ready();
- spi_flash_write_data(0, buf, 256);
- }
-
- print_records();
}
void app_wake_from_backup(void) {
}
void app_setup(void) {
+ spi_flash_init();
+ delay_ms(5000);
+
+ // bool erase = false;
+ // if (erase) {
+ // printf("Erasing...\n");
+ // wait_for_flash_ready();
+ // watch_set_pin_level(A3, false);
+ // spi_flash_command(CMD_ENABLE_WRITE);
+ // wait_for_flash_ready();
+ // watch_set_pin_level(A3, false);
+ // spi_flash_command(CMD_CHIP_ERASE);
+ // delay_ms(10000);
+ // }
+
+ print_records();
}
void app_prepare_for_standby(void) {
void app_wake_from_standby(void) {
}
-static int16_t get_next_available_page(void) {
- uint8_t buf[256] = {0};
-
- uint16_t page = 0;
- for(int16_t i = 0; i < 4; i++) {
- wait_for_flash_ready();
- spi_flash_read_data(i * 256, buf, 256);
- for(int16_t j = 0; j < 256; j++) {
- if(buf[j] == 0) {
- page += 8;
- } else {
- page += __builtin_clz(((uint32_t)buf[j]) << 24);
- break;
- }
- }
- }
-
- if (page >= 8192) return -1;
-
- return page;
-}
-
-static void write_buffer_to_page(uint8_t *buf, uint16_t page) {
- uint32_t address = 256 * page;
-
- wait_for_flash_ready();
- watch_set_pin_level(A3, false);
- spi_flash_command(CMD_ENABLE_WRITE);
- wait_for_flash_ready();
- watch_set_pin_level(A3, false);
- spi_flash_write_data(address, buf, 256);
- wait_for_flash_ready();
-
- uint8_t buf2[256];
- watch_set_pin_level(A3, false);
- spi_flash_read_data(address, buf2, 256);
- wait_for_flash_ready();
-
- uint8_t used_pages[256] = {0xFF};
- uint16_t address_to_mark_used = page / 8;
- uint8_t header_page = address_to_mark_used / 256;
- uint8_t used_byte = 0x7F >> (page % 8);
- uint8_t offset_in_buf = address_to_mark_used % 256;
-
- printf("\tWe wrote 256 bytes to address %ld, which was page %d.\n", address, page);
-
- for(int i = 0; i < 256; i++) {
- if (buf[i] != buf2[i]) {
- printf("\tData mismatch detected at offset %d: %d != %d.\n", i, buf[i], buf2[i]);
- }
- }
-
- watch_set_pin_level(A3, false);
- spi_flash_read_data(header_page * 256, used_pages, 256);
- used_pages[offset_in_buf] = used_byte;
- watch_set_pin_level(A3, false);
- spi_flash_command(CMD_ENABLE_WRITE);
- wait_for_flash_ready();
- watch_set_pin_level(A3, false);
- spi_flash_write_data(header_page * 256, used_pages, 256);
- wait_for_flash_ready();
-}
-
bool app_loop(void) {
- // delay_ms(5000);
-
- return;
-
- // simulate logging 15 seconds of data
- watch_date_time date_time = watch_rtc_get_date_time();
- acceleromter_training_record_t record;
-
- record.header.temperature = 0xC30;
- record.header.temperature |= (ACCELEROMETER_TRAINING_RECORD_HEADER << 14);
- record.header.char1 = 'W';
- record.header.char2 = 'A';
- record.header.timestamp = watch_utility_date_time_to_unix_time(date_time, 0);;
-
- acceleromter_training_record_t records[32];
- memset(records, 0xFF, sizeof(records));
- records[0] = record;
- uint16_t pos = 1;
- uint32_t counter = 0;
-
- printf("logging 15*25 data points for timestamp %ld\n", record.header.timestamp);
- for(uint8_t i = 0; i < 15; i++) {
- for(uint8_t j = 0; j < 25; j++) {
- record.data.x_accel = arc4random() & 0x3FFF;
- record.data.x_accel |= ACCELEROMETER_TRAINING_RECORD_DATA << 14;
- record.data.y_accel = arc4random() & 0x3FFF;
- record.data.z_accel = arc4random() & 0x3FFF;
- record.data.counter = i;
- records[pos++] = record;
- if (pos >= 32) {
- printf("pos overflowed at counter %ld\n", counter);
- int16_t next_available_page = get_next_available_page();
- if (next_available_page > 0) {
- write_buffer_to_page((uint8_t *)records, next_available_page);
- wait_for_flash_ready();
- }
- pos = 0;
- memset(records, 0xFF, sizeof(records));
- }
- }
- }
- if (records[0].header.temperature >> 14 != ACCELEROMETER_TRAINING_RECORD_INVALID) {
- int16_t next_available_page = get_next_available_page();
- if (next_available_page > 0) {
- printf("Partial write\n");
- write_buffer_to_page((uint8_t *)records, next_available_page);
- wait_for_flash_ready();
- }
- }
-
- delay_ms(60000);
+ delay_ms(5000);
- return false;
+ return true;
}
#include "accelerometer_data_acquisition_face.h"
#include "watch_utility.h"
#include "lis2dw.h"
+#include "spiflash.h"
#define ACCELEROMETER_RANGE LIS2DW_RANGE_4_G
-#define ACCELEROMETER_LPMODE LIS2DW_LP_MODE_1
+#define ACCELEROMETER_LPMODE LIS2DW_LP_MODE_2
#define ACCELEROMETER_FILTER LIS2DW_BANDWIDTH_FILTER_DIV2
#define ACCELEROMETER_LOW_NOISE true
#define SECONDS_TO_RECORD 15
static const char activity_types[][3] = {
+ "TE", // Testing
"ID", // Idle
"OF", // Off-wrist
"SL", // Sleeping
"SU", // Stairs Up
"SD", // Stairs Down
"WL", // Weight Lifting
- "TE", // Testing
};
static void update(accelerometer_data_acquisition_state_t *state);
static void start_reading(accelerometer_data_acquisition_state_t *state, movement_settings_t *settings);
static void continue_reading(accelerometer_data_acquisition_state_t *state);
static void finish_reading(accelerometer_data_acquisition_state_t *state);
+static bool wait_for_flash_ready(void);
+static int16_t get_next_available_page(void);
+static void write_buffer_to_page(uint8_t *buf, uint16_t page);
+static void write_page(accelerometer_data_acquisition_state_t *state);
+static void log_data_point(accelerometer_data_acquisition_state_t *state, lis2dw_reading_t reading, uint8_t centiseconds);
void accelerometer_data_acquisition_face_setup(movement_settings_t *settings, uint8_t watch_face_index, void ** context_ptr) {
(void) settings;
(void) watch_face_index;
+ accelerometer_data_acquisition_state_t *state = (accelerometer_data_acquisition_state_t *)*context_ptr;
if (*context_ptr == NULL) {
*context_ptr = malloc(sizeof(accelerometer_data_acquisition_state_t));
memset(*context_ptr, 0, sizeof(accelerometer_data_acquisition_state_t));
- accelerometer_data_acquisition_state_t *state = (accelerometer_data_acquisition_state_t *)*context_ptr;
+ state = (accelerometer_data_acquisition_state_t *)*context_ptr;
state->beep_with_countdown = true;
state->countdown_length = 3;
}
+ spi_flash_init();
+ wait_for_flash_ready();
+ uint8_t buf[256] = {0xFF};
+ spi_flash_read_data(0, buf, 256);
+ if (buf[0] & 0xF0) {
+ // mark first four pages as used
+ buf[0] = 0x0F;
+ wait_for_flash_ready();
+ watch_set_pin_level(A3, false);
+ spi_flash_command(CMD_ENABLE_WRITE);
+ wait_for_flash_ready();
+ spi_flash_write_data(0, buf, 256);
+ }
+
}
void accelerometer_data_acquisition_face_activate(movement_settings_t *settings, void *context) {
(void) settings;
accelerometer_data_acquisition_state_t *state = (accelerometer_data_acquisition_state_t *)context;
- state->next_available_page = 123;
+ state->next_available_page = get_next_available_page();
}
bool accelerometer_data_acquisition_face_loop(movement_event_t event, movement_settings_t *settings, void *context) {
case ACCELEROMETER_DATA_ACQUISITION_MODE_COUNTDOWN:
if (state->countdown_ticks > 0) {
state->countdown_ticks--;
+ printf("countdown: %d\n", state->countdown_ticks);
if (state->countdown_ticks == 0) {
// at zero, begin reading
state->mode = ACCELEROMETER_DATA_ACQUISITION_MODE_SENSING;
// beep for last two ticks before reading
if (state->beep_with_countdown) watch_buzzer_play_note(BUZZER_NOTE_C5, 75);
}
+ if (state->countdown_ticks == 1) {
+ watch_enable_i2c();
+ lis2dw_begin();
+ lis2dw_set_data_rate(LIS2DW_DATA_RATE_25_HZ);
+ lis2dw_set_range(ACCELEROMETER_RANGE);
+ lis2dw_set_low_power_mode(ACCELEROMETER_LPMODE);
+ lis2dw_set_bandwidth_filtering(ACCELEROMETER_FILTER);
+ if (ACCELEROMETER_LOW_NOISE) lis2dw_set_low_noise_mode(true);
+ lis2dw_enable_fifo();
+ }
}
update(state);
break;
break;
}
- // return true if the watch can enter standby mode. If you are PWM'ing an LED or buzzing the buzzer here,
- // you should return false since the PWM driver does not operate in standby mode.
return true;
}
watch_set_colon();
- // special case: display full if full
+ // special case: display full if full, <1% if nearly full
if (state->next_available_page < 0) watch_display_string(" FUL", 6);
+ else if (state->next_available_page > 8110) watch_display_string("<1", 6);
// Bell if beep enabled
if (state->beep_with_countdown) watch_set_indicator(WATCH_INDICATOR_BELL);
}
static void update_settings(accelerometer_data_acquisition_state_t *state) {
- printf("TODO: Settings screen\n");
char buf[12];
watch_clear_colon();
if (state->beep_with_countdown) watch_set_indicator(WATCH_INDICATOR_BELL);
}
}
-bool deleteme = false;
+static int16_t get_next_available_page(void) {
+ uint8_t buf[256] = {0};
+
+ uint16_t page = 0;
+ for(int16_t i = 0; i < 4; i++) {
+ wait_for_flash_ready();
+ spi_flash_read_data(i * 256, buf, 256);
+ for(int16_t j = 0; j < 256; j++) {
+ if(buf[j] == 0) {
+ page += 8;
+ } else {
+ page += __builtin_clz(((uint32_t)buf[j]) << 24);
+ break;
+ }
+ }
+ }
-static void start_reading(accelerometer_data_acquisition_state_t *state, movement_settings_t *settings) {
- (void) state;
- watch_enable_i2c();
- lis2dw_begin();
- lis2dw_set_data_rate(LIS2DW_DATA_RATE_25_HZ);
- lis2dw_set_range(ACCELEROMETER_RANGE);
- lis2dw_set_low_power_mode(ACCELEROMETER_LPMODE);
- lis2dw_set_bandwidth_filtering(ACCELEROMETER_FILTER);
- if (ACCELEROMETER_LOW_NOISE) lis2dw_set_low_noise_mode(true);
- lis2dw_enable_fifo();
+ if (page >= 8192) return -1;
- accelerometer_data_acquisition_record_t record;
- watch_date_time date_time = watch_rtc_get_date_time();
- state->starting_timestamp = watch_utility_date_time_to_unix_time(date_time, movement_timezone_offsets[settings->bit.time_zone] * 60);
- record.header.info.record_type = ACCELEROMETER_DATA_ACQUISITION_HEADER;
- record.header.info.range = ACCELEROMETER_RANGE;
- record.header.info.temperature = lis2dw_get_temperature();
- record.header.char1 = activity_types[state->activity_type_index][0];
- record.header.char2 = activity_types[state->activity_type_index][1];
- record.header.timestamp = state->starting_timestamp;
-
- uint8_t range = 0;
+ return page;
+}
- switch (record.header.info.range) {
- case LIS2DW_RANGE_16_G:
- range = 16;
- break;
- case LIS2DW_RANGE_8_G:
- range = 8;
- break;
- case LIS2DW_RANGE_4_G:
- range = 4;
- break;
- case LIS2DW_RANGE_2_G:
- range = 2;
- break;
+static void write_buffer_to_page(uint8_t *buf, uint16_t page) {
+ uint32_t address = 256 * page;
+
+ wait_for_flash_ready();
+ watch_set_pin_level(A3, false);
+ spi_flash_command(CMD_ENABLE_WRITE);
+ wait_for_flash_ready();
+ watch_set_pin_level(A3, false);
+ spi_flash_write_data(address, buf, 256);
+ wait_for_flash_ready();
+
+ uint8_t buf2[256];
+ watch_set_pin_level(A3, false);
+ spi_flash_read_data(address, buf2, 256);
+ wait_for_flash_ready();
+
+ uint8_t used_pages[256] = {0xFF};
+ uint16_t address_to_mark_used = page / 8;
+ uint8_t header_page = address_to_mark_used / 256;
+ uint8_t used_byte = 0x7F >> (page % 8);
+ uint8_t offset_in_buf = address_to_mark_used % 256;
+
+ printf("\twrite 256 bytes to address %ld, page %d.\n", address, page);
+ for(int i = 0; i < 256; i++) {
+ if (buf[i] != buf2[i]) {
+ printf("\tData mismatch detected at offset %d: %d != %d.\n", i, buf[i], buf2[i]);
+ }
}
- state->records[state->pos++] = record;
-
- printf("TRAINING_%c%c_%d_RANGE%d_", record.header.char1, record.header.char2, record.header.timestamp, range);
+ watch_set_pin_level(A3, false);
+ spi_flash_read_data(header_page * 256, used_pages, 256);
+ used_pages[offset_in_buf] = used_byte;
+ watch_set_pin_level(A3, false);
+ spi_flash_command(CMD_ENABLE_WRITE);
+ wait_for_flash_ready();
+ watch_set_pin_level(A3, false);
+ spi_flash_write_data(header_page * 256, used_pages, 256);
+ wait_for_flash_ready();
+}
- deleteme = true;
+static bool wait_for_flash_ready(void) {
+ watch_set_pin_level(A3, false);
+ bool ok = true;
+ uint8_t read_status_response[1] = {0x00};
+ do {
+ ok = spi_flash_read_command(CMD_READ_STATUS, read_status_response, 1);
+ } while ((read_status_response[0] & 0x3) != 0);
+ delay_ms(1); // why do i need this?
+ watch_set_pin_level(A3, true);
+ return ok;
}
-static void _write_page(accelerometer_data_acquisition_state_t *state) {
+static void write_page(accelerometer_data_acquisition_state_t *state) {
if (state->next_available_page > 0) {
- // write_buffer_to_page((uint8_t *)records, next_available_page);
- // wait_for_flash_ready();
+ write_buffer_to_page((uint8_t *)(state->records), state->next_available_page);
+ wait_for_flash_ready();
}
- // state->next_available_page = get_next_available_page();
state->next_available_page++;
state->pos = 0;
memset(state->records, 0xFF, sizeof(state->records));
}
-static void _log_data_point(accelerometer_data_acquisition_state_t *state, lis2dw_reading_t reading) {
+static void log_data_point(accelerometer_data_acquisition_state_t *state, lis2dw_reading_t reading, uint8_t centiseconds) {
accelerometer_data_acquisition_record_t record;
record.data.x.record_type = ACCELEROMETER_DATA_ACQUISITION_DATA;
record.data.y.lpmode = ACCELEROMETER_LPMODE;
record.data.z.filter = ACCELEROMETER_FILTER;
- record.data.x.accel = reading.x;
- record.data.y.accel = reading.y;
- record.data.z.accel = reading.z;
- record.data.counter = SECONDS_TO_RECORD - state->reading_ticks + 1;
+ record.data.x.accel = (reading.x >> 2) + 8192;
+ record.data.y.accel = (reading.y >> 2) + 8192;
+ record.data.z.accel = (reading.z >> 2) + 8192;
+ record.data.counter = 100 * (SECONDS_TO_RECORD - state->reading_ticks + 1) + centiseconds;
+ printf("logged data point for %d\n", record.data.counter);
state->records[state->pos++] = record;
- if (deleteme) {
- deleteme = false;
- uint8_t filter = 0;
- switch (record.data.z.filter) {
- case LIS2DW_BANDWIDTH_FILTER_DIV2:
- filter = 2;
- break;
- case LIS2DW_BANDWIDTH_FILTER_DIV4:
- filter = 4;
- break;
- case LIS2DW_BANDWIDTH_FILTER_DIV10:
- filter = 10;
- break;
- case LIS2DW_BANDWIDTH_FILTER_DIV20:
- filter = 20;
- break;
- }
- printf("LP%d_FILT%d.CSV\n", record.data.y.lpmode + 1, filter);
- }
- printf("%d, %d, %d, %d\n", record.data.counter, record.data.x.accel, record.data.y.accel, record.data.z.accel);
if (state->pos >= 32) {
- _write_page(state);
+ write_page(state);
}
}
-static void continue_reading(accelerometer_data_acquisition_state_t *state) {
+static void start_reading(accelerometer_data_acquisition_state_t *state, movement_settings_t *settings) {
+ printf("Start reading\n");
lis2dw_fifo_t fifo;
+ lis2dw_read_fifo(&fifo); // dump the fifo, this starts a fresh round of data in continue_reading
+ accelerometer_data_acquisition_record_t record;
+ watch_date_time date_time = watch_rtc_get_date_time();
+ state->starting_timestamp = watch_utility_date_time_to_unix_time(date_time, movement_timezone_offsets[settings->bit.time_zone] * 60);
+ record.header.info.record_type = ACCELEROMETER_DATA_ACQUISITION_HEADER;
+ record.header.info.range = ACCELEROMETER_RANGE;
+ record.header.info.temperature = lis2dw_get_temperature();
+ record.header.char1 = activity_types[state->activity_type_index][0];
+ record.header.char2 = activity_types[state->activity_type_index][1];
+ record.header.timestamp = state->starting_timestamp;
+
+ state->records[state->pos++] = record;
+}
+
+static void continue_reading(accelerometer_data_acquisition_state_t *state) {
+ printf("Continue reading\n");
+ lis2dw_fifo_t fifo;
lis2dw_read_fifo(&fifo);
+
+ fifo.count = min(fifo.count, 25); // hacky, but we need a consistent data rate; if we got a 26th data point, chuck it.
+ uint8_t offset = 4 * (25 - fifo.count); // also hacky: we're sometimes short at the start. align to beginning of next second.
+
for(int i = 0; i < fifo.count; i++) {
- _log_data_point(state, fifo.readings[i]);
+ log_data_point(state, fifo.readings[i], i * 4 + offset);
}
}
static void finish_reading(accelerometer_data_acquisition_state_t *state) {
- printf("finishing\n");
+ printf("Finish reading\n");
if (state->pos != 0) {
- _write_page(state);
+ write_page(state);
}
lis2dw_set_data_rate(LIS2DW_DATA_RATE_POWERDOWN);
watch_disable_i2c();
typedef union {
struct {
- union {
- int16_t record_type : 2; // see above, helps us identify record types when reading back
- int16_t range : 2; // accelerometer range (see lis2dw_range_t)
- int16_t temperature : 12; // raw value from the temperature sensor
+ struct {
+ uint16_t record_type : 2; // see above, helps us identify record types when reading back
+ uint16_t range : 2; // accelerometer range (see lis2dw_range_t)
+ uint16_t temperature : 12; // raw value from the temperature sensor
} info;
- int8_t char1 : 8; // First character of the activity type
- int8_t char2 : 8; // Second character of the activity type
- int32_t timestamp : 32; // UNIX timestamp for the measurement
+ uint8_t char1 : 8; // First character of the activity type
+ uint8_t char2 : 8; // Second character of the activity type
+ uint32_t timestamp : 32; // UNIX timestamp for the measurement
} header;
struct {
- union {
- int16_t record_type : 2; // duplicate; this is the same field as info above
- int16_t accel : 14; // X acceleration value, raw
+ struct {
+ uint16_t record_type : 2; // duplicate; this is the same field as info above
+ uint16_t accel : 14; // X acceleration value, raw, offset by 16384
} x;
- union {
- int16_t lpmode : 2; // low power mode (see lis2dw_low_power_mode_t)
- int16_t accel : 14; // Y acceleration value, raw
+ struct {
+ uint16_t lpmode : 2; // low power mode (see lis2dw_low_power_mode_t)
+ uint16_t accel : 14; // Y acceleration value, raw, offset by 16384
} y;
- union {
- int16_t filter : 2; // bandwidth filtering selection (see lis2dw_bandwidth_filtering_mode_t)
- int16_t accel : 14; // Z acceleration value, raw
+ struct {
+ uint16_t filter : 2; // bandwidth filtering selection (see lis2dw_bandwidth_filtering_mode_t)
+ uint16_t accel : 14; // Z acceleration value, raw, offset by 16384
} z;
- int32_t counter : 16; // number of seconds since timestamp in header
+ uint32_t counter : 16; // number of seconds since timestamp in header
} data;
uint64_t value;
} accelerometer_data_acquisition_record_t;
projects / sensor-watch.git / commitdiff