summaryrefslogtreecommitdiffstats
path: root/apps/Sensor Watch BME280 Project
diff options
context:
space:
mode:
Diffstat (limited to 'apps/Sensor Watch BME280 Project')
-rw-r--r--apps/Sensor Watch BME280 Project/app.c392
-rw-r--r--apps/Sensor Watch BME280 Project/app.h76
-rw-r--r--apps/Sensor Watch BME280 Project/bme280.h85
-rwxr-xr-xapps/Sensor Watch BME280 Project/make/.gitignore1
-rwxr-xr-xapps/Sensor Watch BME280 Project/make/Makefile10
5 files changed, 564 insertions, 0 deletions
diff --git a/apps/Sensor Watch BME280 Project/app.c b/apps/Sensor Watch BME280 Project/app.c
new file mode 100644
index 00000000..e07b35f8
--- /dev/null
+++ b/apps/Sensor Watch BME280 Project/app.c
@@ -0,0 +1,392 @@
+#include <stdio.h>
+#include <string.h>
+#include <math.h>
+#include "watch.h"
+#include "bme280.h"
+
+#include "app.h"
+
+ApplicationState application_state;
+char buf[16] = {0};
+
+/**
+ * @brief Zeroes out the application state struct.
+ */
+void app_init() {
+ memset(&application_state, 0, sizeof(application_state));
+}
+
+void app_wake_from_deep_sleep() {
+ // This app does not support deep sleep mode.
+}
+
+void app_setup() {
+ struct calendar_date_time date_time;
+ watch_get_date_time(&date_time);
+ if (date_time.date.year < 2020) {
+ date_time.date.year = 2020;
+ watch_set_date_time(date_time);
+ }
+
+ watch_enable_external_interrupts();
+ watch_register_interrupt_callback(BTN_MODE, cb_mode_pressed, INTERRUPT_TRIGGER_RISING);
+ watch_register_interrupt_callback(BTN_LIGHT, cb_light_pressed, INTERRUPT_TRIGGER_RISING);
+ watch_register_extwake_callback(BTN_ALARM, cb_alarm_pressed, true);
+
+ watch_enable_buzzer();
+ watch_enable_leds();
+
+ // pin A0 powers the sensor on this board.
+ watch_enable_digital_output(A0);
+ watch_set_pin_level(A0, true);
+ delay_ms(10);
+
+ watch_enable_i2c();
+
+ watch_i2c_write8(BME280_ADDRESS, BME280_REGISTER_SOFTRESET, BME280_SOFT_RESET_CODE);
+ delay_ms(10);
+ application_state.dig_T1 = watch_i2c_read16(BME280_ADDRESS, BME280_REGISTER_DIG_T1);
+ application_state.dig_T2 = (int16_t)watch_i2c_read16(BME280_ADDRESS, BME280_REGISTER_DIG_T2);
+ application_state.dig_T3 = (int16_t)watch_i2c_read16(BME280_ADDRESS, BME280_REGISTER_DIG_T3);
+ application_state.dig_H1 = watch_i2c_read8(BME280_ADDRESS, BME280_REGISTER_DIG_H1);
+ application_state.dig_H2 = (int16_t)watch_i2c_read16(BME280_ADDRESS, BME280_REGISTER_DIG_H2);
+ application_state.dig_H3 = watch_i2c_read8(BME280_ADDRESS, BME280_REGISTER_DIG_H3);
+ application_state.dig_H4 = ((int8_t)watch_i2c_read8(BME280_ADDRESS, BME280_REGISTER_DIG_H4) << 4) |
+ (watch_i2c_read8(BME280_ADDRESS, BME280_REGISTER_DIG_H4 + 1) & 0xF);
+ application_state.dig_H5 = ((int8_t)watch_i2c_read8(BME280_ADDRESS, BME280_REGISTER_DIG_H5 + 1) << 4) |
+ (watch_i2c_read8(BME280_ADDRESS, BME280_REGISTER_DIG_H5) >> 4);
+ application_state.dig_H6 = (int8_t)watch_i2c_read8(BME280_ADDRESS, BME280_REGISTER_DIG_H6);
+
+ watch_i2c_write8(BME280_ADDRESS, BME280_REGISTER_CONTROL_HUMID, BME280_CONTROL_HUMID_SAMPLING_NONE);
+ watch_i2c_write8(BME280_ADDRESS, BME280_REGISTER_CONTROL, BME280_CONTROL_TEMPERATURE_SAMPLING_X16 |
+ BME280_CONTROL_PRESSURE_SAMPLING_NONE |
+ BME280_CONTROL_MODE_FORCED);
+
+ watch_enable_display();
+
+ watch_register_tick_callback(cb_tick);
+}
+
+/**
+ * Nothing to do here.
+ */
+void app_prepare_for_sleep() {
+}
+
+/**
+ * @todo restore the BME280's calibration values from backup memory
+ */
+void app_wake_from_sleep() {
+}
+
+/**
+ * Displays the temperature and humidity on screen, or a string indicating no measurements are being taken.
+ */
+bool app_loop() {
+ // play a beep if the mode has changed in response to a user's press of the MODE button
+ if (application_state.mode_changed) {
+ // low note for nonzero case, high note for return to clock
+ watch_buzzer_play_note(application_state.mode ? BUZZER_NOTE_C7 : BUZZER_NOTE_C8, 100);
+ application_state.mode_changed = false;
+ }
+
+ // If the user is not in clock mode and the mode timeout has expired, return them to clock mode
+ if (application_state.mode != MODE_CLOCK && application_state.mode_ticks == 0) {
+ application_state.mode = MODE_CLOCK;
+ application_state.mode_changed = true;
+ }
+
+ // If the LED is off and should be on, turn it on
+ if (application_state.light_ticks > 0 && !application_state.led_on) {
+ watch_set_led_green();
+ application_state.led_on = true;
+ }
+
+ // if the LED is on and should be off, turn it off
+ if (application_state.led_on && application_state.light_ticks == 0) {
+ // unless the user is holding down the LIGHT button, in which case, give them more time.
+ if (watch_get_pin_level(BTN_LIGHT)) {
+ application_state.light_ticks = 3;
+ } else {
+ watch_set_led_off();
+ application_state.led_on = false;
+ }
+ }
+
+ switch (application_state.mode) {
+ case MODE_CLOCK:
+ do_clock_mode();
+ break;
+ case MODE_TEMP:
+ do_temp_mode();
+ break;
+ case MODE_LOG:
+ do_log_mode();
+ break;
+ case MODE_PREFS:
+ do_prefs_mode();
+ break;
+ case MODE_SET:
+ do_set_time_mode();
+ break;
+ case NUM_MODES:
+ // dummy case, just silences a warning
+ break;
+ }
+
+ application_state.mode_changed = false;
+
+ return true;
+}
+
+/**
+ * Reads the temperature from the BME280
+ * @param p_t_fine - an optional pointer to an int32_t; if provided, the t_fine measurement
+ * (required for humidity calculation) will be returned by reference.
+ * Pass in NULL if you do not care about this value.
+ * @return a float indicating the temperature in degrees celsius.
+ */
+float read_temperature(int32_t *p_t_fine) {
+ // read24 reads the bytes into a uint32 which works for little-endian values (MSB is 0)
+ uint32_t raw_data = watch_i2c_read24(BME280_ADDRESS, BME280_REGISTER_TEMP_DATA) >> 8;
+ // alas the sensor's register layout is big-endian-ish, with a nibble of zeroes at the end of the LSB.
+ // this line shuffles everything back into place (swaps LSB and MSB and shifts the zeroes off the end)
+ int32_t adc_value = (((raw_data >> 16) | (raw_data & 0xFF00) | (raw_data << 16)) & 0xFFFFFF) >> 4;
+
+ // this bit is cribbed from Adafruit's BME280 driver. support their open source efforts by buying some stuff!
+ int32_t var1 = ((((adc_value >> 3) - ((int32_t)application_state.dig_T1 << 1))) * ((int32_t)application_state.dig_T2)) >> 11;
+ int32_t var2 = (((((adc_value >> 4) - ((int32_t)application_state.dig_T1)) * ((adc_value >> 4) - ((int32_t)application_state.dig_T1))) >> 12) * ((int32_t)application_state.dig_T3)) >> 14;
+ int32_t t_fine = var1 + var2;
+
+ // if we got a pointer to a t_fine, return it by reference (for humidity calculation).
+ if (p_t_fine != NULL) *p_t_fine = t_fine;
+
+ if (application_state.is_fahrenheit) {
+ return (((t_fine * 5 + 128) >> 8) / 100.0) * 1.8 + 32;
+ } else {
+ return ((t_fine * 5 + 128) >> 8) / 100.0;
+ }
+}
+
+/**
+ * Reads the humidity from the BME280
+ * @param t_fine - the t_fine measurement from a call to read_temperature
+ * @return a float indicating the relative humidity as a percentage from 0-100.
+ * @todo the returned value is glitchy, need to fix.
+ */
+float read_humidity(int32_t t_fine) {
+ int32_t adc_value = watch_i2c_read16(BME280_ADDRESS, BME280_REGISTER_HUMID_DATA);
+
+ // again, cribbed from Adafruit's BME280 driver. they sell a great breakout board for this sensor!
+ int32_t v_x1_u32r = (t_fine - ((int32_t)76800));
+ v_x1_u32r = (((((adc_value << 14) - (((int32_t)application_state.dig_H4) << 20) - (((int32_t)application_state.dig_H5) * v_x1_u32r)) +
+ ((int32_t)16384)) >> 15) * (((((((v_x1_u32r * ((int32_t)application_state.dig_H6)) >> 10) * (((v_x1_u32r * ((int32_t)application_state.dig_H3)) >> 11) +
+ ((int32_t)32768))) >> 10) + ((int32_t)2097152)) * ((int32_t)application_state.dig_H2) + 8192) >> 14));
+ v_x1_u32r = (v_x1_u32r - (((((v_x1_u32r >> 15) * (v_x1_u32r >> 15)) >> 7) * ((int32_t)application_state.dig_H1)) >> 4));
+ v_x1_u32r = (v_x1_u32r < 0) ? 0 : v_x1_u32r;
+ v_x1_u32r = (v_x1_u32r > 419430400) ? 419430400 : v_x1_u32r;
+ float h = (v_x1_u32r >> 12);
+
+ return h / 1024.0;
+}
+
+void log_data() {
+ struct calendar_date_time date_time;
+ watch_get_date_time(&date_time);
+ uint8_t hour = date_time.time.hour;
+ int8_t temperature = read_temperature(NULL);
+
+ for(int i = 0; i < MAX_DATA_POINTS - 1; i++) {
+ application_state.logged_data[i] = application_state.logged_data[i + 1];
+ }
+ application_state.logged_data[MAX_DATA_POINTS - 1].is_valid = true;
+ application_state.logged_data[MAX_DATA_POINTS - 1].hour = hour;
+ application_state.logged_data[MAX_DATA_POINTS - 1].temperature = temperature;
+}
+
+void do_clock_mode() {
+ struct calendar_date_time date_time;
+ const char months[12][3] = {"JA", "FE", "MR", "AR", "MA", "JN", "JL", "AU", "SE", "OC", "NO", "dE"};
+
+ watch_get_date_time(&date_time);
+ watch_display_string((char *)months[date_time.date.month - 1], 0);
+ sprintf(buf, "%2d%2d%02d%02d", date_time.date.day, date_time.time.hour, date_time.time.min, date_time.time.sec);
+ watch_display_string(buf, 2);
+ watch_set_colon();
+}
+
+void do_temp_mode() {
+ int32_t t_fine;
+ float temperature;
+ float humidity;
+
+ // take one reading
+ watch_i2c_write8(BME280_ADDRESS, BME280_REGISTER_CONTROL, BME280_CONTROL_TEMPERATURE_SAMPLING_X16 |
+ BME280_CONTROL_MODE_FORCED);
+ // wait for reading to finish
+ while(watch_i2c_read8(BME280_ADDRESS, BME280_REGISTER_STATUS) & BME280_STATUS_UPDATING_MASK);
+ temperature = read_temperature(&t_fine);
+ humidity = read_humidity(t_fine);
+ if (application_state.show_humidity) {
+ sprintf(buf, "TE%2d%4.1f#%c", (int)(humidity / 10), temperature, application_state.is_fahrenheit ? 'F' : 'C');
+ } else {
+ sprintf(buf, "TE %4.1f#%c", temperature, application_state.is_fahrenheit ? 'F' : 'C');
+ }
+ watch_display_string(buf, 0);
+ watch_clear_colon();
+}
+
+void do_log_mode() {
+ bool is_valid = (uint8_t)(application_state.logged_data[MAX_DATA_POINTS - 1 - application_state.page].is_valid);
+ uint8_t hour = (uint8_t)(application_state.logged_data[MAX_DATA_POINTS - 1 - application_state.page].hour);
+ int8_t temperature = (int8_t)(application_state.logged_data[MAX_DATA_POINTS - 1 - application_state.page].temperature);
+ if (!is_valid) {
+ sprintf(buf, "LO%2d------", application_state.page);
+ watch_clear_colon();
+ } else {
+ sprintf(buf, "LO%2d%2d%4d", application_state.page, hour, temperature);
+ watch_set_colon();
+ }
+ watch_display_string(buf, 0);
+}
+
+void log_mode_handle_primary_button() {
+ application_state.page++;
+ if (application_state.page == MAX_DATA_POINTS) application_state.page = 0;
+}
+
+void do_prefs_mode() {
+ sprintf(buf, "PR CorF %c", application_state.is_fahrenheit ? 'F' : 'C');
+ watch_display_string(buf, 0);
+ watch_clear_colon();
+}
+
+void prefs_mode_handle_primary_button() {
+ // TODO: add rest of preferences (12/24, humidity, LED color, etc.)
+ // for now only one, C or F
+}
+
+void prefs_mode_handle_secondary_button() {
+ application_state.is_fahrenheit = !application_state.is_fahrenheit;
+}
+
+void do_set_time_mode() {
+ struct calendar_date_time date_time;
+
+ watch_get_date_time(&date_time);
+ watch_display_string(" ", 0);
+ switch (application_state.page) {
+ case 0: // hour
+ sprintf(buf, "ST t%2d", date_time.time.hour);
+ break;
+ case 1: // minute
+ sprintf(buf, "ST t %02d", date_time.time.min);
+ break;
+ case 2: // second
+ sprintf(buf, "ST t %02d", date_time.time.sec);
+ break;
+ case 3: // year
+ sprintf(buf, "ST d%2d", date_time.date.year - 2000);
+ break;
+ case 4: // month
+ sprintf(buf, "ST d %02d", date_time.date.month);
+ break;
+ case 5: // day
+ sprintf(buf, "ST d %02d", date_time.date.day);
+ break;
+ }
+ watch_display_string(buf, 0);
+ watch_set_pixel(1, 12); // required for T in position 1
+}
+
+void set_time_mode_handle_primary_button() {
+ application_state.page++;
+ if (application_state.page == 6) application_state.page = 0;
+}
+
+void set_time_mode_handle_secondary_button() {
+ struct calendar_date_time date_time;
+ watch_get_date_time(&date_time);
+ const uint8_t days_in_month[12] = {31, 28, 31, 30, 31, 30, 30, 31, 30, 31, 30, 31};
+
+ switch (application_state.page) {
+ case 0: // hour
+ date_time.time.hour = (date_time.time.hour + 1) % 24;
+ break;
+ case 1: // minute
+ date_time.time.min = (date_time.time.min + 1) % 60;
+ break;
+ case 2: // second
+ date_time.time.sec = 0;
+ break;
+ case 3: // year
+ // only allow 2021-2030. fix this sometime next decade
+ date_time.date.year = ((date_time.date.year % 10) + 1) + 2020;
+ break;
+ case 4: // month
+ date_time.date.month = ((date_time.date.month + 1) % 12);
+ break;
+ case 5: // day
+ date_time.date.day = date_time.date.day + 1;
+ // can't set to the 29th on a leap year. if it's february 29, set to 11:59 on the 28th.
+ // and it should roll over.
+ if (date_time.date.day > days_in_month[date_time.date.month - 1]) {
+ date_time.date.day = 1;
+ }
+ break;
+ }
+ watch_set_date_time(date_time);
+}
+
+void cb_mode_pressed() {
+ application_state.mode = (application_state.mode + 1) % NUM_MODES;
+ application_state.mode_changed = true;
+ application_state.mode_ticks = 300;
+ application_state.page = 0;
+}
+
+void cb_light_pressed() {
+ switch (application_state.mode) {
+ case MODE_PREFS:
+ prefs_mode_handle_secondary_button();
+ break;
+ case MODE_SET:
+ set_time_mode_handle_secondary_button();
+ break;
+ default:
+ application_state.light_ticks = 3;
+ break;
+ }
+}
+
+void cb_alarm_pressed() {
+ switch (application_state.mode) {
+ case MODE_LOG:
+ log_mode_handle_primary_button();
+ break;
+ case MODE_PREFS:
+ prefs_mode_handle_primary_button();
+ break;
+ case MODE_SET:
+ set_time_mode_handle_primary_button();
+ break;
+ default:
+ break;
+ }
+}
+
+void cb_tick() {
+ // TODO: use alarm interrupt to trigger data acquisition.
+ struct calendar_date_time date_time;
+ watch_get_date_time(&date_time);
+ if (date_time.time.min == 0 && date_time.time.sec == 0) {
+ log_data();
+ }
+
+ if (application_state.light_ticks > 0) {
+ application_state.light_ticks--;
+ }
+ if (application_state.mode_ticks > 0) {
+ application_state.mode_ticks--;
+ }
+}
diff --git a/apps/Sensor Watch BME280 Project/app.h b/apps/Sensor Watch BME280 Project/app.h
new file mode 100644
index 00000000..e0bbe1c2
--- /dev/null
+++ b/apps/Sensor Watch BME280 Project/app.h
@@ -0,0 +1,76 @@
+// Sensor Watch: Hiking Log Demo App
+// This app displays a clock and temperature data from a BME280 temperature and humidiity sensor.
+// It also logs up to 36 hours of temperature data for playback.
+// You can use this app on backcountry treks: take the watch off at night and place it outside your tent.
+// It will log overnight low temperatures for review in the morning and optional transfer to your notepad.
+
+#define MAX_DATA_POINTS 36
+
+typedef enum ApplicationMode {
+ MODE_CLOCK = 0, // Displays month, day and current time.
+ MODE_TEMP, // (TE) Displays temperature and an optional humidity reading (0-10 representing 0-100%)
+ MODE_LOG, // (LO) Plays back temperature data (temperature in seconds slot)
+ MODE_PREFS, // (PR) Allows setting options for the application
+ MODE_SET, // (ST) Set time and date
+ NUM_MODES // Last item in the enum, it's the number of cases.
+} ApplicationMode;
+
+typedef struct SensorReading {
+ bool is_valid;
+ uint8_t hour;
+ int8_t temperature;
+} SensorReading;
+
+typedef struct ApplicationState {
+ // Internal application state
+ ApplicationMode mode; // Current mode
+ bool mode_changed; // Lets us perform one-time setup for a given mode
+ uint16_t mode_ticks; // Timeout for the mode (returns to clock after timeout expires)
+ uint8_t light_ticks; // Timeout for the light
+ bool led_on; // Indicates that the LED is on
+ uint8_t page; // Tracks the current page in log, prefs or settings.
+ bool is_fahrenheit; // User preference, C or F
+
+ // Data logging
+ SensorReading logged_data[MAX_DATA_POINTS];
+
+ // User preference
+ bool show_humidity; // Indicates that the LED is on
+
+ // BME280 calibration values
+ uint16_t dig_T1;
+ int16_t dig_T2;
+ int16_t dig_T3;
+ uint8_t dig_H1;
+ int16_t dig_H2;
+ uint8_t dig_H3;
+ int16_t dig_H4;
+ int16_t dig_H5;
+ int8_t dig_H6;
+} ApplicationState;
+
+float read_temperature(int32_t *p_t_fine);
+float read_humidity(int32_t t_fine);
+
+void log_data();
+
+void do_clock_mode();
+
+void do_temp_mode();
+void temp_mode_handle_primary_button();
+
+void do_log_mode();
+void log_mode_handle_primary_button();
+
+void do_prefs_mode();
+void prefs_mode_handle_primary_button();
+void prefs_mode_handle_secondary_button();
+
+void do_set_time_mode();
+void set_time_mode_handle_primary_button();
+void set_time_mode_handle_secondary_button();
+
+void cb_light_pressed();
+void cb_mode_pressed();
+void cb_alarm_pressed();
+void cb_tick();
diff --git a/apps/Sensor Watch BME280 Project/bme280.h b/apps/Sensor Watch BME280 Project/bme280.h
new file mode 100644
index 00000000..ba142582
--- /dev/null
+++ b/apps/Sensor Watch BME280 Project/bme280.h
@@ -0,0 +1,85 @@
+#define BME280_ADDRESS (0x77)
+#define BME280_SOFT_RESET_CODE (0xB6)
+#define BME280_STATUS_UPDATING_MASK (1 << 3)
+
+typedef enum BME280Register {
+ BME280_REGISTER_DIG_T1 = 0x88,
+ BME280_REGISTER_DIG_T2 = 0x8A,
+ BME280_REGISTER_DIG_T3 = 0x8C,
+
+ BME280_REGISTER_DIG_P1 = 0x8E,
+ BME280_REGISTER_DIG_P2 = 0x90,
+ BME280_REGISTER_DIG_P3 = 0x92,
+ BME280_REGISTER_DIG_P4 = 0x94,
+ BME280_REGISTER_DIG_P5 = 0x96,
+ BME280_REGISTER_DIG_P6 = 0x98,
+ BME280_REGISTER_DIG_P7 = 0x9A,
+ BME280_REGISTER_DIG_P8 = 0x9C,
+ BME280_REGISTER_DIG_P9 = 0x9E,
+
+ BME280_REGISTER_DIG_H1 = 0xA1,
+ BME280_REGISTER_DIG_H2 = 0xE1,
+ BME280_REGISTER_DIG_H3 = 0xE3,
+ BME280_REGISTER_DIG_H4 = 0xE4,
+ BME280_REGISTER_DIG_H5 = 0xE5,
+ BME280_REGISTER_DIG_H6 = 0xE7,
+
+ BME280_REGISTER_CHIPID = 0xD0,
+ BME280_REGISTER_VERSION = 0xD1,
+ BME280_REGISTER_SOFTRESET = 0xE0,
+
+ BME280_REGISTER_CAL26 = 0xE1,
+
+ BME280_REGISTER_CONTROL_HUMID = 0xF2,
+ BME280_REGISTER_STATUS = 0XF3,
+ BME280_REGISTER_CONTROL = 0xF4,
+ BME280_REGISTER_CONFIG = 0xF5,
+ BME280_REGISTER_PRESSURE_DATA = 0xF7,
+ BME280_REGISTER_TEMP_DATA = 0xFA,
+ BME280_REGISTER_HUMID_DATA = 0xFD
+} BME280Register;
+
+typedef enum BME280Control {
+ BME280_CONTROL_MODE_SLEEP = 0b00,
+ BME280_CONTROL_MODE_FORCED = 0b01,
+ BME280_CONTROL_MODE_NORMAL = 0b11,
+ BME280_CONTROL_PRESSURE_SAMPLING_NONE = 0b000 << 2,
+ BME280_CONTROL_PRESSURE_SAMPLING_X1 = 0b001 << 2,
+ BME280_CONTROL_PRESSURE_SAMPLING_X2 = 0b010 << 2,
+ BME280_CONTROL_PRESSURE_SAMPLING_X4 = 0b011 << 2,
+ BME280_CONTROL_PRESSURE_SAMPLING_X8 = 0b100 << 2,
+ BME280_CONTROL_PRESSURE_SAMPLING_X16 = 0b101 << 2,
+ BME280_CONTROL_TEMPERATURE_SAMPLING_NONE = 0b000 << 5,
+ BME280_CONTROL_TEMPERATURE_SAMPLING_X1 = 0b001 << 5,
+ BME280_CONTROL_TEMPERATURE_SAMPLING_X2 = 0b010 << 5,
+ BME280_CONTROL_TEMPERATURE_SAMPLING_X4 = 0b011 << 5,
+ BME280_CONTROL_TEMPERATURE_SAMPLING_X8 = 0b100 << 5,
+ BME280_CONTROL_TEMPERATURE_SAMPLING_X16 = 0b101 << 5
+} BME280Control;
+
+typedef enum BME280ControlHumidity {
+ BME280_CONTROL_HUMID_SAMPLING_NONE = 0b000,
+ BME280_CONTROL_HUMID_SAMPLING_X1 = 0b001,
+ BME280_CONTROL_HUMID_SAMPLING_X2 = 0b010,
+ BME280_CONTROL_HUMID_SAMPLING_X4 = 0b011,
+ BME280_CONTROL_HUMID_SAMPLING_X8 = 0b100,
+ BME280_CONTROL_HUMID_SAMPLING_X16 = 0b101
+} BME280ControlHumidity;
+
+typedef enum BME280Filter {
+ BME280_CONFIG_FILTER_OFF = 0b000 << 2,
+ BME280_CONFIG_FILTER_X2 = 0b001 << 2,
+ BME280_CONFIG_FILTER_X4 = 0b010 << 2,
+ BME280_CONFIG_FILTER_X8 = 0b011 << 2,
+ BME280_CONFIG_FILTER_X16 = 0b10 << 2,
+ BME280_CONFIG_STANDBY_MS_0_5 = 0b000 << 5,
+ BME280_CONFIG_STANDBY_MS_10 = 0b110 << 5,
+ BME280_CONFIG_STANDBY_MS_20 = 0b111 << 5,
+ BME280_CONFIG_STANDBY_MS_62_5 = 0b001 << 5,
+ BME280_CONFIG_STANDBY_MS_125 = 0b010 << 5,
+ BME280_CONFIG_STANDBY_MS_250 = 0b011 << 5,
+ BME280_CONFIG_STANDBY_MS_500 = 0b100 << 5,
+ BME280_CONFIG_STANDBY_MS_1000 = 0b101 << 5
+} BME280Filter;
+
+inline uint16_t make_le_16(uint16_t val) { return (val >> 8) | (val << 8); }
diff --git a/apps/Sensor Watch BME280 Project/make/.gitignore b/apps/Sensor Watch BME280 Project/make/.gitignore
new file mode 100755
index 00000000..3722ac63
--- /dev/null
+++ b/apps/Sensor Watch BME280 Project/make/.gitignore
@@ -0,0 +1 @@
+build/
diff --git a/apps/Sensor Watch BME280 Project/make/Makefile b/apps/Sensor Watch BME280 Project/make/Makefile
new file mode 100755
index 00000000..c66ad20c
--- /dev/null
+++ b/apps/Sensor Watch BME280 Project/make/Makefile
@@ -0,0 +1,10 @@
+TOP = ../../..
+include $(TOP)/make.mk
+
+INCLUDES += \
+ -I../
+
+SRCS += \
+ ../app.c
+
+include $(TOP)/rules.mk
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-28 14:41:45 +0000