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feat(i2c): add baud rate setting functionality #67

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feat(i2c): add baud rate setting functionality #67

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15 changes: 15 additions & 0 deletions c/common/i2cdriver.c
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Original file line number Diff line number Diff line change
Expand Up @@ -11,6 +11,7 @@
#define __STDC_FORMAT_MACROS
#include <inttypes.h>
#include <string.h>
#include <stdbool.h>

#include "i2cdriver.h"

Expand Down Expand Up @@ -323,6 +324,20 @@ void i2c_getstatus(I2CDriver *sd)
sd->mode = mode[0];
}

bool i2c_setbaud(I2CDriver *sd, unsigned int kbaud)
{
if (kbaud == sd->speed) {
return true;
}
if ((kbaud != 100) || (kbaud != 400)) {
return false;
}
uint8_t ch = (kbaud == 100)?'1':'4';
writeToSerialPort(sd->port, &ch, 1);
i2c_getstatus(sd);
return (bool)(sd->speed == kbaud);;
}

void i2c_scan(I2CDriver *sd, uint8_t devices[128])
{
charCommand(sd, 'd');
Expand Down
3 changes: 3 additions & 0 deletions c/common/i2cdriver.h
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Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,7 @@
#define I2CDRIVER_H

#include <stdint.h>
#include <stdbool.h>

#if defined(WIN32)
#include <windows.h>
Expand Down Expand Up @@ -36,6 +37,8 @@ void i2c_read(I2CDriver *sd, uint8_t bytes[], size_t nn);
int i2c_start(I2CDriver *sd, uint8_t dev, uint8_t op);
void i2c_stop(I2CDriver *sd);

bool i2c_setbaud(I2CDriver *sd, int kbaud);

void i2c_monitor(I2CDriver *sd, int enable);
void i2c_capture(I2CDriver *sd);

Expand Down