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barebones 'hello world' project

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This commit is contained in:
Joey Castillo
2021-08-02 13:36:53 -04:00
parent 7e330befff
commit 2d1e2e8c76
6 changed files with 400 additions and 453 deletions
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175
Sensor Watch Starter Project/app/app.c
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@@ -7,129 +7,30 @@ void uart_putc(char c);
void uart_puts(char *s);
typedef enum ApplicationMode {
MODE_TIME,
MODE_SENSE,
MODE_SET_HOUR,
MODE_SET_MINUTE,
MODE_SET_SECOND
MODE_HELLO = 0,
MODE_THERE
} ApplicationMode;
typedef enum LightColor {
COLOR_OFF = 0,
COLOR_RED = 1,
COLOR_GREEN = 2,
COLOR_YELLOW = 3
} LightColor;
typedef struct ApplicationState {
ApplicationMode mode;
bool light_pressed;
bool mode_pressed;
bool alarm_pressed;
bool light_on;
uint16_t dig_T1; /**< dig_T1 cal register. */
int16_t dig_T2; /**< dig_T2 cal register. */
int16_t dig_T3; /**< dig_T3 cal register. */
LightColor color;
} ApplicationState;
ApplicationState applicationState;
void cb_light_pressed() {
applicationState.light_pressed = true;
applicationState.color = (applicationState.color + 1) % 4;
}
void cb_mode_pressed() {
applicationState.mode_pressed = true;
}
void cb_alarm_pressed() {
applicationState.alarm_pressed = true;
}
void cb_tick() {
;
}
#define BMP280_REGISTER_DIG_T1 0x88
#define BMP280_REGISTER_DIG_T2 0x8A
#define BMP280_REGISTER_DIG_T3 0x8C
#define BMP280_REGISTER_SOFTRESET 0xE0
#define BMP280_REGISTER_STATUS 0xF3
#define BMP280_REGISTER_CONTROL 0xF4
#define BMP280_REGISTER_CONFIG 0xF5
#define BMP280_REGISTER_PRESSUREDATA 0xF7
#define BMP280_REGISTER_TEMPDATA 0xFA
uint16_t read8(uint8_t reg) {
uint8_t val;
watch_i2c_send(0x77, &reg, 1);
watch_i2c_receive(0x77, &val, 1);
return val;
}
uint16_t read16(uint8_t reg) {
uart_puts("\nReading 2 bytes... ");
uint8_t buf[2];
watch_i2c_send(0x77, &reg, 1);
watch_i2c_receive(0x77, (uint8_t *)&buf, 2);
uart_puts("received!\n");
char buf2[32] = {0};
sprintf(buf2, "buf has values: %#02x, %#02x", buf[0], buf[1]);
uart_puts(buf2);
return (buf[0] << 8) | buf[1];
}
uint32_t read24(uint8_t reg) {
uart_puts("\nReading 3 bytes... ");
uint32_t value;
uint8_t buf[3];
watch_i2c_send(0x77, &reg, 1);
watch_i2c_receive(0x77, (uint8_t *)&buf, 3);
uart_puts("received!\n");
char buf2[33] = {0};
sprintf(buf2, "buf has values: %#02x, %#02x, %#02x", buf[0], buf[1], buf[2]);
uart_puts(buf2);
value = buf[0];
value <<= 8;
value |= buf[1];
value <<= 8;
value |= buf[2];
return value;
}
uint16_t read16_LE(uint8_t reg) {
uint16_t temp = read16(reg);
return (temp >> 8) | (temp << 8);
}
int16_t readS16(uint8_t reg) {
return (int16_t)read16(reg);
}
int16_t readS16_LE(uint8_t reg) {
return (int16_t)read16_LE(reg);
}
void print_temperature() {
int32_t var1, var2;
int32_t t_fine;
int32_t adc_T = read24(BMP280_REGISTER_TEMPDATA);
adc_T >>= 4;
var1 = ((((adc_T >> 3) - ((int32_t)applicationState.dig_T1 << 1))) *
((int32_t)applicationState.dig_T2)) >>
11;
var2 = (((((adc_T >> 4) - ((int32_t)applicationState.dig_T1)) *
((adc_T >> 4) - ((int32_t)applicationState.dig_T1))) >>
12) *
((int32_t)applicationState.dig_T3)) >>
14;
t_fine = var1 + var2;
float T = ((t_fine * 5 + 128) >> 8) / 100.0;
char buf[32] = {0};
sprintf(buf, "\n\nTemp is %3.2f degrees C", T);
uart_puts(buf);
applicationState.mode = (applicationState.mode + 1) % 2;
}
/**
@@ -143,26 +44,14 @@ void print_temperature() {
*/
void app_init() {
memset(&applicationState, 0, sizeof(applicationState));
watch_enable_led(false);
watch_enable_buttons();
watch_register_button_callback(BTN_LIGHT, cb_light_pressed);
watch_register_button_callback(BTN_MODE, cb_mode_pressed);
watch_enable_date_time();
watch_enable_tick_callback(cb_tick);
watch_enable_display();
watch_enable_led();
watch_enable_i2c();
uart_puts("\n\nI2C Driver Test\n");
uint8_t reset_cmd[] = {0xE0, 0xB6};
watch_i2c_send(0x77, reset_cmd, 2);
uart_puts("Reset BMP280\n");
applicationState.dig_T1 = read16_LE(BMP280_REGISTER_DIG_T1);
applicationState.dig_T2 = readS16_LE(BMP280_REGISTER_DIG_T2);
applicationState.dig_T3 = readS16_LE(BMP280_REGISTER_DIG_T3);
uint8_t ctrl_cmd[] = {0xF4, 0xA3};
watch_i2c_send(0x77, ctrl_cmd, 2);
}
/**
@@ -172,9 +61,6 @@ void app_init() {
* a press on one of the buttons).
*/
void app_prepare_for_sleep() {
applicationState.light_pressed = false;
applicationState.mode_pressed = false;
applicationState.alarm_pressed = false;
}
/**
@@ -182,12 +68,33 @@ void app_prepare_for_sleep() {
* STANDBY sleep mode.
*/
void app_wake_from_sleep() {
}
/**
* @brief the app_loop function is called once on app startup and then again each time
* the watch STANDBY sleep mode.
*/
void app_loop() {
if (applicationState.light_pressed) {
print_temperature();
switch (applicationState.color) {
case COLOR_RED:
watch_set_led_red();
break;
case COLOR_GREEN:
watch_set_led_green();
break;
case COLOR_YELLOW:
watch_set_led_yellow();
break;
default:
applicationState.color = COLOR_OFF;
watch_set_led_off();
}
switch (applicationState.mode) {
case MODE_HELLO:
watch_display_string("Hello", 5);
break;
case MODE_THERE:
watch_display_string("there", 5);
break;
}
uart_putc('.');
}