void mcp79410_set(struct mcp79410_time_t *time) {
// see the note in section 5.3 about how to set the timekeeping registers without rollover issues
uint8_t data[7];
// disable the crystal input (ST = 0)
data[0] = 0x00; // seconds register
data[1] = 0x00; // ST = 0
twi_write_to(0x6f, data, 2, TWI_BLOCK, TWI_STOP);
// wait for the oscilator to stop (OSCRUN == 0)
data[0] = 0x03;
data[1] = 0x20;
while (data[1] & 0x20) {
twi_read_from(0x6f, data, 2, TWI_STOP);
}
// set the time fields
data[0] = 0x01; // minutes register
data[1] = hex2bcd(time->minute);
data[2] = hex2bcd(time->hour);
data[3] = hex2bcd(time->wday) | 0x08, // enable battery (VBATEN = 1)
data[4] = hex2bcd(time->mday),
data[5] = hex2bcd(time->month), // bit 5 is LPYR
data[6] = hex2bcd(time->year - 2000);
twi_write_to(0x6f, data, 7, TWI_BLOCK, TWI_STOP);
// set the seconds field and enable the crystal input (ST = 1)
data[0] = 0x00; // seconds register
data[1] = hex2bcd(time->second) | 0x80;
twi_write_to(0x6f, data, 2, TWI_BLOCK, TWI_STOP);
}
void ds1307_set(struct ds1307_time_t *time) {
uint8_t data[8] = {
0x00,
hex2bcd(time->second),
hex2bcd(time->minute),
hex2bcd(time->hour),
hex2bcd(time->wday),
hex2bcd(time->mday),
hex2bcd(time->month),
hex2bcd(time->year - 2000)
};
twi_write_to(0x68, data, 8, TWI_BLOCK, TWI_STOP);
}
void displayFrequency(long int f)
{
int i;
char c;
hex2bcd(f);
lcdCursor(4,0);
for (i=1; i<8; i++) {
c = str[i];
if (i==5) {
lcdChar('.');
}
lcdChar(c);
}
}
void display(long int f)
{
int i;
char c;
hex2bcd(f);
lcdCmd(0x80 + 4);
_delay_us(200);
for (i=1; i<8; i++) {
c = str[i];
if (i==5) {
lcdData('.');
}
lcdData(c);
}
}
static inline void smu_fill_set_rtc_cmd(struct smu_cmd_buf *cmd_buf,
struct rtc_time *time)
{
cmd_buf->cmd = 0x8e;
cmd_buf->length = 8;
cmd_buf->data[0] = 0x80;
cmd_buf->data[1] = hex2bcd(time->tm_sec);
cmd_buf->data[2] = hex2bcd(time->tm_min);
cmd_buf->data[3] = hex2bcd(time->tm_hour);
cmd_buf->data[4] = time->tm_wday;
cmd_buf->data[5] = hex2bcd(time->tm_mday);
cmd_buf->data[6] = hex2bcd(time->tm_mon) + 1;
cmd_buf->data[7] = hex2bcd(time->tm_year - 100);
}
