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esp32_Adafruit_BusIO
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add i2c speed change

This commit is contained in:
lady ada 2020-05-14 16:56:27 -04:00
parent 145cfd1864
commit db793416f1
2 changed files with 17 additions and 1 deletions
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17
Adafruit_I2CDevice.cpp
View File

@ -114,7 +114,7 @@ bool Adafruit_I2CDevice::write(uint8_t *buffer, size_t len, bool stop,
DEBUG_SERIAL.print(F("0x")); DEBUG_SERIAL.print(F("0x"));
DEBUG_SERIAL.print(buffer[i], HEX); DEBUG_SERIAL.print(buffer[i], HEX);
DEBUG_SERIAL.print(F(", ")); DEBUG_SERIAL.print(F(", "));
if (len % 32 == 31) { if (i % 32 == 31) {
DEBUG_SERIAL.println(); DEBUG_SERIAL.println();
} }
} }
@ -215,3 +215,18 @@ bool Adafruit_I2CDevice::write_then_read(uint8_t *write_buffer,
* @return The 7-bit address of this device * @return The 7-bit address of this device
*/ */
uint8_t Adafruit_I2CDevice::address(void) { return _addr; } uint8_t Adafruit_I2CDevice::address(void) { return _addr; }
/*!
* @brief Change the I2C clock speed to desired (relies on
* underlying Wire support!
* @return True if this platform supports changing I2C speed.
* Not necessarily that the speed was achieved!
*/
bool Adafruit_I2CDevice::setSpeed(uint32_t desiredclk) {
#if (ARDUINO >= 157) && !defined(ARDUINO_STM32_FEATHER)
_wire->setClock(desiredclk);
return true;
#else
return false;
#endif
}

1
Adafruit_I2CDevice.h
View File

@ -17,6 +17,7 @@ public:
bool write_then_read(uint8_t *write_buffer, size_t write_len, bool write_then_read(uint8_t *write_buffer, size_t write_len,
uint8_t *read_buffer, size_t read_len, uint8_t *read_buffer, size_t read_len,
bool stop = false); bool stop = false);
bool setSpeed(uint32_t desiredclk);
/*! @brief How many bytes we can read in a transaction /*! @brief How many bytes we can read in a transaction
* @return The size of the Wire receive/transmit buffer */ * @return The size of the Wire receive/transmit buffer */