int rtc_read(unsigned char address)
{
int value = -1;
unsigned char buf[1];
i2c_begin();
buf[0] = address;
/* send read command */
if (i2c_write(RTC_DEV_READ,buf,1) >= 0)
{
i2c_start();
i2c_outb(RTC_DEV_READ);
if (i2c_getack())
{
value = i2c_inb(1);
}
}
i2c_stop();
i2c_end();
return value;
}
int rtc_read_multiple(unsigned char address, unsigned char *buf, int numbytes)
{
int ret = 0;
unsigned char obuf[1];
int i;
i2c_begin();
obuf[0] = address;
/* send read command */
if (i2c_write(RTC_DEV_READ, obuf, 1) >= 0)
{
i2c_start();
i2c_outb(RTC_DEV_READ);
if (i2c_getack())
{
for(i = 0; i < numbytes-1; i++)
buf[i] = i2c_inb(0);
buf[i] = i2c_inb(1);
}
else
{
ret = -1;
}
}
i2c_stop();
i2c_end();
return ret;
}
void tcs34725::clearInterrupt(void) {
int res;
res = i2c_begin(i2c_dev_name);
if (res < 0)
return;
if (i2c_smbus_write_byte(fd, 0x66) < 0){
i2c_end();
perror(__FUNCTION__);
return;
}
i2c_end();
}
int dac_volume(unsigned int left, unsigned int right, bool deemph)
{
int ret = 0;
unsigned char buf[3];
i2c_begin();
if (left > 0x38)
left = 0x38;
if (right > 0x38)
right = 0x38;
buf[0] = DAC_REG_WRITE | DAC_AVOL;
buf[1] = (left & 0x3f) | (deemph ? 0x40 : 0);
buf[2] = right & 0x3f;
/* send write command */
if (i2c_write(DAC_DEV_WRITE,buf,3))
{
ret = -1;
}
i2c_end();
return ret;
}
static void i2c_led_write(uint8_t addr, uint8_t data)
{
i2c_start();
i2c_send_raw(I2C_LED_ADDRESS << 1 | I2C_WRITE);
i2c_send_raw(addr);
i2c_send_raw(data);
i2c_end();
}
void tcs34725::write8 (uint8_t reg, uint8_t value)
{
int res;
res = i2c_begin(i2c_dev_name);
if (res < 0)
return;
if (i2c_smbus_write_byte_data(fd, TCS34725_COMMAND_BIT | reg, value) < 0) {
i2c_end();
perror(__FUNCTION__);
return;
}
i2c_end();
}
void
real_init_i2c()
{
i2c_start();
i2c_write(0x4e);
i2c_write(0x03);
i2c_write(0x00);
i2c_end();
}
void
i2c_config(unsigned char value)
{
i2c_start();
i2c_write(0x4e);
i2c_write(0x01);
i2c_write(value);
i2c_end();
}
/**
* Обработчик окончания приёма/передачи ведущим.
*/
static void i2c_m_end(void)
{
// Обозначим конец передачи.
i2c_end();
// Если не была инициирована ещё одна передача.
if(!_i2c_state.has_transfer){
// Пошлём стоп.
i2c_do_stop();
}
}
void dac_init(void)
{
unsigned char buf[2];
i2c_begin();
buf[0] = DAC_REG_WRITE | DAC_SR_REG;
buf[1] = 0x07;
/* send write command */
i2c_write(DAC_DEV_WRITE,buf,2);
i2c_end();
}
uint8_t tcs34725::read8(uint8_t reg)
{
int res;
res = i2c_begin(i2c_dev_name);
if (res < 0)
return -1;
/* return neg value if error or byte (0 - 0xff) */
res = i2c_smbus_read_byte_data(fd, TCS34725_COMMAND_BIT | reg);
if(res < 0) {
i2c_end();
perror(__FUNCTION__);
return (uint8_t) -1;
}else{
return (uint8_t) res;
}
i2c_end();
}
int nmi_i2c_write(unsigned char adr, unsigned char *b, unsigned long sz)
{
int i;
i2c_begin();
i2c_write_byte((adr << 1));
for(i = 0; i < sz; i++) {
i2c_write_byte(b[i]);
}
i2c_end();
return 1;
}
int nmi_i2c_read(unsigned char adr, unsigned char *b, unsigned long sz)
{
int i;
i2c_begin();
i2c_write_byte((adr << 1)|0x1);
for(i = 0; i < sz; i++) {
b[i] = i2c_read_byte();
if(i == sz-1)
i2c_write_ask(1);
else
i2c_write_ask(0);
}
i2c_end();
return 1;
}
int rtc_write(unsigned char address, unsigned char value)
{
int ret = 0;
unsigned char buf[2];
i2c_begin();
buf[0] = address;
buf[1] = value;
/* send run command */
if (i2c_write(RTC_DEV_WRITE,buf,2))
{
ret = -1;
}
i2c_end();
return ret;
}
/**
* Обработчик окончания приёма/передачи ведомым.
*/
static void i2c_s_end(void)
{
// Обозначим конец передачи/приёма.
i2c_end();
// Если передача прервана.
if(_i2c_state.interrupted){
_i2c_state.interrupted = false;
// Запустим новую.
i2c_do_start();
// Иначе.
}else{
// Если не была инициирована ещё одна передача.
if(!_i2c_state.has_transfer){
//Будем слушать дальше.
i2c_do_listen();
}
}
}
/* dac_config is called once to initialize it. we will apply
our static settings because of the init flow.
dac_init -> dac_line_in -> mpeg_init -> dac_config
*/
static int dac_config(void)
{
int ret = 0;
unsigned char buf[2];
i2c_begin();
buf[0] = DAC_REG_WRITE | DAC_GCFG;
buf[1] = (dac_enabled ? 0x04 : 0) |
(line_in_enabled ? 0x08 : 0);
/* send write command */
if (i2c_write(DAC_DEV_WRITE,buf,2))
{
ret = -1;
}
i2c_end();
return ret;
}
/**
* @ingroup I2C-RTC
*
*/
void mcp7941x_end (void) {
FUNC_PREFIX(i2c_end());
}
void end() {
logs_end();
i2c_end();
httpd_end();
exit(0);
}
