VL53L0X World smallest Time-of-Flight (ToF) ranging sensor
Dependencies: X_NUCLEO_COMMON ST_INTERFACES
Dependents: HelloWorld_ST_Sensors mbed-os-mqtt-client Multi_VL53L0X DISCO-IOT01_HomeEnv ... more
Fork of VL53L0X by
Diff: vl53L1x_I2c.h
- Revision:
- 6:8ac15bf6d635
- Parent:
- 5:f16727052990
diff -r f16727052990 -r 8ac15bf6d635 vl53L1x_I2c.h --- a/vl53L1x_I2c.h Mon Jan 28 10:14:03 2019 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,84 +0,0 @@ -/* Define to prevent from recursive inclusion --------------------------------*/ -#ifndef __DEV_53L1X_I2C_H -#define __DEV_53L1X_I2C_H - -/* Includes ------------------------------------------------------------------*/ -#include "mbed.h" -#include "pinmap.h" - -//Class replacing DevI2C class as it was not implementing a 16bit address registers -class vl53L1X_DevI2C : public I2C -{ -public: - /** Create a DevI2C Master interface, connected to the specified pins - * - * @param sda I2C data line pin - * @param scl I2C clock line pin - */ - vl53L1X_DevI2C(PinName sda, PinName scl) : I2C(sda, scl) {} - - /** - * @brief Writes a buffer towards the I2C peripheral device. - * @param pBuffer pointer to the byte-array data to send - * @param DeviceAddr specifies the peripheral device slave address. - * @param RegisterAddr specifies the internal address register - * where to start writing to (must be correctly masked). - * @param NumByteToWrite number of bytes to be written. - * @retval 0 if ok, - * @retval -1 if an I2C error has occured, or - * @retval -2 on temporary buffer overflow (i.e. NumByteToWrite was too high) - * @note On some devices if NumByteToWrite is greater - * than one, the RegisterAddr must be masked correctly! - */ - int v53l1x_i2c_write(uint8_t* pBuffer, uint8_t DeviceAddr, uint16_t RegisterAddr, - uint16_t NumByteToWrite) { - int ret; - uint8_t tmp[TEMP_BUF_SIZE]; - - if(NumByteToWrite >= TEMP_BUF_SIZE) return -2; - - /* First, send device address. Then, send data and STOP condition */ - tmp[0] = RegisterAddr >> 8; - tmp[1] = RegisterAddr & 0x0FF; - memcpy(tmp+2, pBuffer, NumByteToWrite); - - ret = write(DeviceAddr, (const char*)tmp, NumByteToWrite+2, false); - - if(ret) return -1; - return 0; - } - - /** - * @brief Reads a buffer from the I2C peripheral device. - * @param pBuffer pointer to the byte-array to read data in to - * @param DeviceAddr specifies the peripheral device slave address. - * @param RegisterAddr specifies the internal address register - * where to start reading from (must be correctly masked). - * @param NumByteToRead number of bytes to be read. - * @retval 0 if ok, - * @retval -1 if an I2C error has occured - * @note On some devices if NumByteToWrite is greater - * than one, the RegisterAddr must be masked correctly! - */ - int v53l1x_i2c_read(uint8_t* pBuffer, uint8_t DeviceAddr, uint16_t RegisterAddr, - uint16_t NumByteToRead) { - int ret; - uint8_t ExpanderData[2]; - ExpanderData[0] = RegisterAddr >> 8; - ExpanderData[1] = RegisterAddr & 0x0FF; - /* Send device address, with no STOP condition */ - ret = write(DeviceAddr, (const char*)ExpanderData, 2, true); - if(!ret) { - /* Read data, with STOP condition */ - ret = read(DeviceAddr, (char*)pBuffer, NumByteToRead, false); - } - - if(ret) return -1; - return 0; - } - -private: - static const unsigned int TEMP_BUF_SIZE = 32; -}; - -#endif /* __DEV_53L1X_I2C_H */ \ No newline at end of file