bool bw_spi_dimmer_start(device_info_t *device_info) { if (device_info->slave_address == (uint8_t) 0) { device_info->slave_address = BW_DIMMER_DEFAULT_SLAVE_ADDRESS; } if (device_info->speed_hz == (uint32_t) 0) { device_info->speed_hz = (uint32_t) BW_DIMMER_SPI_SPEED_DEFAULT_HZ; } else if (device_info->speed_hz > (uint32_t) BW_DIMMER_SPI_SPEED_MAX_HZ) { device_info->speed_hz = (uint32_t) BW_DIMMER_SPI_SPEED_MAX_HZ; } if (device_info->chip_select >= SPI_CS2) { device_info->chip_select = SPI_CS2; bcm2835_aux_spi_begin(); device_info->internal.clk_div = bcm2835_aux_spi_CalcClockDivider(device_info->speed_hz); } else { bcm2835_spi_begin(); device_info->internal.clk_div = (uint16_t)((uint32_t) BCM2835_CORE_CLK_HZ / device_info->speed_hz); } char id[BW_ID_STRING_LENGTH+1]; bw_spi_read_id(device_info, id); if (memcmp(id, "spi_dimmer", 10) == 0) { return true; } return false; }
int main(void) { device_info_t device_info; UART_BEGIN(); device_info.slave_address = BW_LCD_DEFAULT_SLAVE_ADDRESS; /** SPI **/ printf("bw_spi_lcd_start\n"); bw_spi_lcd_start(&device_info); printf("bw_spi_read_id\n"); bw_spi_read_id(&device_info); printf("bw_spi_lcd_reinit\n"); bw_spi_lcd_reinit(&device_info); uint8_t backlight; printf("bw_spi_lcd_get_backlight := "); bw_spi_lcd_get_backlight(&device_info, &backlight); printf("%d\n", backlight); uint8_t contrast; printf("bw_spi_lcd_get_contrast := "); bw_spi_lcd_get_contrast(&device_info,&contrast); printf("%d\n", contrast); printf("bw_spi_lcd_cls\n"); bw_spi_lcd_cls(&device_info); printf("bw_spi_lcd_text_line_1\n"); bw_spi_lcd_text_line_1(&device_info, "AVR Atmel", 9); printf("bw_spi_lcd_text_line_2\n"); bw_spi_lcd_text_line_2(&device_info, "Arduino Uno", 11); /** I2C **/ printf("bw_i2c_lcd_start\n"); bw_i2c_lcd_start(BW_LCD_DEFAULT_SLAVE_ADDRESS); printf("bw_i2c_read_id\n"); bw_i2c_read_id(&device_info); printf("bw_i2c_lcd_reinit\n"); bw_i2c_lcd_reinit(); printf("bw_i2c_lcd_cls\n"); bw_i2c_lcd_cls(); printf("bw_i2c_lcd_text_line_1\n"); bw_i2c_lcd_text_line_1("AVR Atmel", 9); /** RTC **/ struct rtc_time tm_rtc; printf("mcp7941x_start\n"); mcp7941x_start(0x00); printf("mcp7941x_get_date_time\n"); mcp7941x_get_date_time(&tm_rtc); printf("%.2d:%.2d:%.2d %.2d-%.2d-%.2d\n", tm_rtc.tm_hour, tm_rtc.tm_min, tm_rtc.tm_sec, tm_rtc.tm_mday, tm_rtc.tm_mon, tm_rtc.tm_year); device_info.slave_address = BW_DIO_DEFAULT_SLAVE_ADDRESS; printf("bw_i2c_dio_start\n"); bw_i2c_dio_start(&device_info); printf("bw_i2c_read_id\n"); bw_i2c_read_id(&device_info); printf("bw_i2c_dio_fsel_mask\n"); bw_i2c_dio_fsel_mask(&device_info, 0x7F); char buf[9]; while (1) { mcp7941x_get_date_time(&tm_rtc); sprintf(buf, "%.2d:%.2d:%.2d", tm_rtc.tm_hour, tm_rtc.tm_min, tm_rtc.tm_sec); bw_i2c_lcd_text_line_2(buf, 8); device_info.slave_address = BW_DIO_DEFAULT_SLAVE_ADDRESS; bw_i2c_dio_output(&device_info, BW_DIO_PIN_IO0 | BW_DIO_PIN_IO2 | BW_DIO_PIN_IO4 | BW_DIO_PIN_IO6); _delay_ms(500); bw_i2c_dio_output(&device_info, BW_DIO_PIN_IO1 | BW_DIO_PIN_IO3 | BW_DIO_PIN_IO5); _delay_ms(500); } }