Beispiel #1
0
/**
 * \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);
		}

	}
}
Beispiel #2
0
int main(void)
{
	uint8_t i;
	uint8_t temperature[BUFFER_SIZE];
	uint8_t light[BUFFER_SIZE];
	uint8_t value_disp[5];
	uint32_t adc_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;
	}

	while (true)
	{
		/* Refresh page title only if necessary. */
		if (app_mode_switch > 0)
		{
			app_mode = app_mode_switch - 1;

			// Clear screen.
			ssd1306_clear();
			ssd1306_set_page_address(0);
			ssd1306_set_column_address(0);

			/* Temperature mode. */
			if (app_mode == 0)
			{
				ioport_set_pin_level(IO1_LED1_PIN, IO1_LED1_ACTIVE);
				ioport_set_pin_level(IO1_LED2_PIN, !IO1_LED2_ACTIVE);
				ioport_set_pin_level(IO1_LED3_PIN, !IO1_LED3_ACTIVE);
				ssd1306_write_text("Temperature sensor:");
			}
			/* Light mode. */
			else if (app_mode == 1)
			{
				ioport_set_pin_level(IO1_LED2_PIN, IO1_LED2_ACTIVE);
				ioport_set_pin_level(IO1_LED1_PIN, !IO1_LED1_ACTIVE);
				ioport_set_pin_level(IO1_LED3_PIN, !IO1_LED3_ACTIVE);
				ssd1306_write_text("Light sensor:");
			}
			/* SD mode. */
			else
			{
				ioport_set_pin_level(IO1_LED3_PIN, IO1_LED3_ACTIVE);
				ioport_set_pin_level(IO1_LED1_PIN, !IO1_LED1_ACTIVE);
				ioport_set_pin_level(IO1_LED2_PIN, !IO1_LED2_ACTIVE);

				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 in a range from 0 to 40 degrees.
		if (at30tse_read_temperature(&temp) == TWI_SUCCESS)
		{
			// Don't care about negative temperature.
			if (temp < 0)
				temp = 0;

			// Update temperature for display.
			// Note: -12 in order to rescale for better rendering.
			if (temp < 12)
				temperature[BUFFER_SIZE - 1] = 0;
			else
				temperature[BUFFER_SIZE - 1] = temp - 12;
		}
		else
		{
			// Error print zero values.
			temperature[BUFFER_SIZE - 1] = 0;
		}

		// Get light sensor information.
		// Rescale for better rendering.
		adc_start(ADC);
		adc_value = adc_get_channel_value(ADC, ADC_CHANNEL_4);
		light[BUFFER_SIZE - 1] = 24 - adc_value * 24 / 4096;

		// Print temperature in text format.
		if (app_mode == 0)
		{
			sprintf(value_disp, "%d", (uint8_t)temp);
			ssd1306_set_column_address(95);
			ssd1306_write_command(SSD1306_CMD_SET_PAGE_START_ADDRESS(0));
			ssd1306_write_text(" ");
			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, 1, BUFFER_SIZE, 3, temperature);
		}
		else if (app_mode == 1)
		{
			sprintf(value_disp, "%lu", 100 - (adc_value * 100 / 4096));
			ssd1306_set_column_address(98);
			ssd1306_write_command(SSD1306_CMD_SET_PAGE_START_ADDRESS(0));
			ssd1306_write_text(" ");
			ssd1306_write_text(value_disp);
			ssd1306_write_text("%");

			// Refresh graph.
			ssd1306_draw_graph(0, 1, BUFFER_SIZE, 3, light);
		}
		else
		{
			// Is card has been inserted or removed?
			if (sd_status_update == 1)
			{
				// Clear screen.
				ssd1306_clear();
				ssd1306_set_page_address(0);
				ssd1306_set_column_address(0);

				// Show SD card info.
				display_sd_info();

				sd_status_update = 0;
			}

		}

		/* Wait and stop screen flickers. */
		delay_ms(50);
	}
}