void sys_time_init(void) {
struct rtc_time tm_rtc;
struct tm tmbuf;
sys_time_init_startup_micros = bcm2835_st_read();
if (mcp7941x_start(0x00) == MCP7941X_ERROR) {
tmbuf.tm_hour = 0;
tmbuf.tm_min = 0;
tmbuf.tm_sec = 0;
tmbuf.tm_mday = 1;
tmbuf.tm_wday = 1;
tmbuf.tm_mon = 0;
tmbuf.tm_year = 18;
tmbuf.tm_isdst = 0; // 0 (DST not in effect, just take RTC time)
//tmbuf.tm_yday = 0;
rtc_startup_seconds = mktime(&tmbuf);
return;
}
mcp7941x_get_date_time(&tm_rtc);
tmbuf.tm_hour = tm_rtc.tm_hour;
tmbuf.tm_min = tm_rtc.tm_min;
tmbuf.tm_sec = tm_rtc.tm_sec;
tmbuf.tm_mday = tm_rtc.tm_mday;
tmbuf.tm_wday = tm_rtc.tm_mday;
tmbuf.tm_mon = tm_rtc.tm_mon;
tmbuf.tm_year = tm_rtc.tm_year;
tmbuf.tm_isdst = 0; // 0 (DST not in effect, just take RTC time)
rtc_startup_seconds = mktime(&tmbuf);
}
int main(int argc, char **argv) {
// RTC time
struct rtc_time tm_rtc, tm_rtc_set;
// Linux current time
time_t ltime;
struct tm *tm_linux;
printf("rtc_start\n");
if (mcp7941x_start(0) != MCP7941X_OK) {
printf("Cannot start I2C_RTC\n");
exit(EXIT_FAILURE);
}
// Get current localtime from Linux
ltime = time(NULL);
tm_linux = localtime(<ime);
printf("Linux time:\n\tsecs=%d, mins=%d, hours=%d, mday=%d, mon=%d, year=%d, wday=%d\n", tm_linux->tm_sec, tm_linux->tm_min, tm_linux->tm_hour, tm_linux->tm_mday, tm_linux->tm_mon, tm_linux->tm_year, tm_linux->tm_wday);
tm_rtc_set.tm_sec = tm_linux->tm_sec;
tm_rtc_set.tm_min = tm_linux->tm_min;
tm_rtc_set.tm_hour = tm_linux->tm_hour;
tm_rtc_set.tm_mday = tm_linux->tm_mday;
tm_rtc_set.tm_mon = tm_linux->tm_mon;
tm_rtc_set.tm_year = tm_linux->tm_year - 100;
tm_rtc_set.tm_wday = tm_linux->tm_wday;
mcp7941x_set_date_time(&tm_rtc_set);
mcp7941x_get_date_time(&tm_rtc);
printf("RTC time:\n\tsecs=%d, mins=%d, hours=%d, mday=%d, mon=%d, year=%d, wday=%d\n", tm_rtc.tm_sec, tm_rtc.tm_min, tm_rtc.tm_hour, tm_rtc.tm_mday, tm_rtc.tm_mon, tm_rtc.tm_year, tm_rtc.tm_wday);
printf("rtc_end\n");
mcp7941x_end();
return EXIT_SUCCESS;
}
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);
}
}
