/**
* \brief ADC interrupt callback function.
*/
static void adc_end_conversion(void)
{
switch(channel_num){
case adc_channel_0:
adc_channel_get_value(ADC, ADC_CHANNEL_0);
break;
case adc_channel_1:
adc_channel_get_value(ADC, ADC_CHANNEL_1);
break;
case adc_channel_2:
adc_channel_get_value(ADC, ADC_CHANNEL_2);
break;
case adc_channel_3:
adc_channel_get_value(ADC, ADC_CHANNEL_3);
break;
case adc_channel_4:
adc_channel_get_value(ADC, ADC_CHANNEL_4);
break;
case adc_channel_5:
adc_channel_get_value(ADC, ADC_CHANNEL_5);
break;
case adc_channel_6:
adc_channel_get_value(ADC, ADC_CHANNEL_6);
break;
case adc_channel_7:
adc_channel_get_value(ADC, ADC_CHANNEL_7);
break;
}
}
OSStatus platform_adc_take_sample( const platform_adc_t* adc, uint16_t* output )
{
OSStatus err = kNoErr;
platform_mcu_powersave_disable();
require_action_quiet( adc != NULL, exit, err = kParamErr);
channel_num = adc->channel;
adc_channel_enable(ADC, adc->channel);
adc_set_callback(ADC, adc->interrupt, adc_end_conversion, 1);
/* Start conversion */
adc_start_software_conversion(ADC);
adc_start_calibration(ADC);
while (adc_get_interrupt_status(ADC) & (1 << adc->channel));
*output = adc_channel_get_value(ADC, adc->channel);
mico_thread_msleep(1);
adc_channel_disable(ADC, adc->channel);
exit:
platform_mcu_powersave_enable();
return err;
}
/**
* \brief The main application.
*/
int main(void)
{
uint8_t i;
uint8_t temperature[BUFFER_SIZE];
uint8_t light[BUFFER_SIZE];
char value_disp[5];
uint32_t adc_value;
uint32_t light_value;
double temp;
/* Initialize clocks. */
sysclk_init();
/* Initialize GPIO states. */
board_init();
/* Configure ADC for light sensor. */
configure_adc();
/* Initialize at30tse. */
at30tse_init();
/* Configure IO1 buttons. */
configure_buttons();
/* Initialize SPI and SSD1306 controller. */
ssd1306_init();
ssd1306_clear();
/* Clear internal buffers. */
for (i = 0; i < BUFFER_SIZE; ++i) {
temperature[i] = 0;
light[i] = 0;
}
/* Show the start info. */
multi_language_show_start_info();
/* Wait 3 seconds to show the above message. */
delay_s(3);
/* Check for valid firmware in SD card. */
check_valid_firmware();
while (true) {
/* Set the trigger and jump to bootloader */
if (reset_flag) {
jump_to_bootloader();
}
/* Refresh page title only if necessary. */
if (app_mode_switch > 0) {
app_mode = (app_mode + 1) % 3;
/* Clear screen. */
ssd1306_clear();
ssd1306_set_page_address(0);
ssd1306_set_column_address(0);
if (app_mode == 0) {
/* Temperature mode. */
ioport_set_pin_level(OLED1_LED1_PIN, OLED1_LED1_ACTIVE);
ioport_set_pin_level(OLED1_LED2_PIN, !OLED1_LED2_ACTIVE);
ioport_set_pin_level(OLED1_LED3_PIN, !OLED1_LED3_ACTIVE);
multi_language_show_temperature_info();
} else if (app_mode == 1) {
/* Light mode. */
ioport_set_pin_level(OLED1_LED2_PIN, OLED1_LED2_ACTIVE);
ioport_set_pin_level(OLED1_LED1_PIN, !OLED1_LED1_ACTIVE);
ioport_set_pin_level(OLED1_LED3_PIN, !OLED1_LED3_ACTIVE);
multi_language_show_light_info();
} else {
/* SD mode. */
ioport_set_pin_level(OLED1_LED3_PIN, OLED1_LED3_ACTIVE);
ioport_set_pin_level(OLED1_LED1_PIN, !OLED1_LED1_ACTIVE);
ioport_set_pin_level(OLED1_LED2_PIN, !OLED1_LED2_ACTIVE);
sd_listing_pos = 0;
/* Show SD card info. */
display_sd_info();
}
app_mode_switch = 0;
}
/* Shift graph buffers. */
for (i = 0; i < (BUFFER_SIZE - 1); ++i) {
temperature[i] = temperature[i + 1];
light[i] = light[i + 1];
}
/* Get temperature. */
if (at30tse_read_temperature(&temp) == TWI_SUCCESS) {
/* Don't care about negative temperature. */
if (temp < 0) {
temp = 0;
}
/* Update temperature for display. */
/* Note: rescale to 0~24 for better rendering. */
if (temp > 40) {
temperature[BUFFER_SIZE - 1] = 24;
} else {
temperature[BUFFER_SIZE - 1] = (uint8_t)temp * 24 / 40;
}
} else {
/* Error print zero values. */
temperature[BUFFER_SIZE - 1] = 0;
}
/* Get light sensor information. */
/* Rescale to 0~24 for better rendering. */
adc_start_software_conversion(ADC);
adc_value = adc_channel_get_value(ADC, ADC_CHANNEL_0);
light[BUFFER_SIZE - 1] = 24 - adc_value * 24 / 1024;
if (app_mode == 0) {
/* Display temperature in text format. */
sprintf(value_disp, "%d", (uint8_t)temp);
ssd1306_set_column_address(98);
ssd1306_write_command(SSD1306_CMD_SET_PAGE_START_ADDRESS(0));
ssd1306_write_text(" ");
/* Avoid character overlapping. */
if (temp < 10) {
ssd1306_clear_char();
}
ssd1306_write_text(value_disp);
/* Display degree symbol. */
ssd1306_write_data(0x06);
ssd1306_write_data(0x06);
ssd1306_write_text("c");
/* Refresh graph. */
ssd1306_draw_graph(0, 2, BUFFER_SIZE, 2, temperature);
} else if (app_mode == 1) {
light_value = 100 - (adc_value * 100 / 1024);
sprintf(value_disp, "%lu", light_value);
ssd1306_set_column_address(98);
ssd1306_write_command(SSD1306_CMD_SET_PAGE_START_ADDRESS(0));
ssd1306_write_text(" ");
/* Avoid character overlapping. */
if (light_value < 10) {
ssd1306_clear_char();
}
ssd1306_write_text(value_disp);
ssd1306_write_text("%");
/* Avoid character overlapping. */
if (light_value < 100) {
ssd1306_clear_char();
}
/* Refresh graph. */
ssd1306_draw_graph(0, 2, BUFFER_SIZE, 2, light);
} else {
/**
* Refresh screen if card was inserted/removed or
* browsing content.
*/
if (sd_update == 1) {
/* Clear screen. */
ssd1306_clear();
ssd1306_set_page_address(0);
ssd1306_set_column_address(0);
if (sd_listing_pos == 0) {
/* Show SD card info. */
display_sd_info();
} else {
/* List SD card files. */
display_sd_files_unicode();
}
sd_update = 0;
}
}
/* Wait and stop screen flickers. */
delay_ms(150);
if (app_mode_switch == 0) {
pio_enable_interrupt(OLED1_PIN_PUSHBUTTON_1_PIO,
OLED1_PIN_PUSHBUTTON_1_MASK);
}
if (sd_update == 0) {
pio_enable_interrupt(OLED1_PIN_PUSHBUTTON_2_PIO,
OLED1_PIN_PUSHBUTTON_2_MASK);
pio_enable_interrupt(OLED1_PIN_PUSHBUTTON_3_PIO,
OLED1_PIN_PUSHBUTTON_3_MASK);
}
}
}
/**
* \brief ADC interrupt callback function.
*/
static void adc_end_conversion(void)
{
g_ul_value = adc_channel_get_value(ADC, ADC_CHANNEL_11);
is_conversion_done = true;
}
/**
* \brief ADC interrupt callback function.
*/
static void adc_temp_sensor_end_conversion(void)
{
g_ul_value = adc_channel_get_value(ADC, ADC_TEMPERATURE_SENSOR);
is_conversion_done = true;
}