ST Expansion SW Team / VL53L3CX_mbed

Rename library

Dependencies:   X_NUCLEO_COMMON ST_INTERFACES

Dependents:   VL53L3CX_NoShield_1Sensor_poll_Mb06x VL53L3_NoShield_1Sensor_polling_Mb63 X_NUCLEO_53L3A2 53L3A2_Ranging

porting/vl53L3_I2c.h@7:7f1bbf370283, 2021-07-21 (annotated)

Committer:
charlesmn
Date:
Wed Jul 21 14:07:59 2021 +0000
Revision:
7:7f1bbf370283
Parent:
5:89031b2f5316 
Moved vl53l3cx_class.cpp and .h to 53l3a2_RangingClass

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Charles MacNeill 5:89031b2f5316 1 /* Define to prevent from recursive inclusion --------------------------------*/
Charles MacNeill 5:89031b2f5316 2 #ifndef __DEV_53L1X_I2C_H
Charles MacNeill 5:89031b2f5316 3 #define __DEV_53L1X_I2C_H
Charles MacNeill 5:89031b2f5316 4
Charles MacNeill 5:89031b2f5316 5 /* Includes ------------------------------------------------------------------*/
Charles MacNeill 5:89031b2f5316 6 #include <stdlib.h>
Charles MacNeill 5:89031b2f5316 7 #include "mbed.h"
Charles MacNeill 5:89031b2f5316 8
Charles MacNeill 5:89031b2f5316 9 #include "pinmap.h"
Charles MacNeill 5:89031b2f5316 10
Charles MacNeill 5:89031b2f5316 11
Charles MacNeill 5:89031b2f5316 12 //Class replacing DevI2C class as it was not implementing a 16bit address registers
Charles MacNeill 5:89031b2f5316 13 class vl53L3_DevI2C : public I2C
Charles MacNeill 5:89031b2f5316 14 {
Charles MacNeill 5:89031b2f5316 15 public:
Charles MacNeill 5:89031b2f5316 16 /** Create a DevI2C Master interface, connected to the specified pins
Charles MacNeill 5:89031b2f5316 17 *
Charles MacNeill 5:89031b2f5316 18 * @param sda I2C data line pin
Charles MacNeill 5:89031b2f5316 19 * @param scl I2C clock line pin
Charles MacNeill 5:89031b2f5316 20 */
Charles MacNeill 5:89031b2f5316 21 vl53L3_DevI2C(PinName sda, PinName scl) : I2C(sda, scl) { printf ("hello\n");}
Charles MacNeill 5:89031b2f5316 22
Charles MacNeill 5:89031b2f5316 23
Charles MacNeill 5:89031b2f5316 24 int VL53L3_i2c_write(uint8_t* pBuffer, uint8_t DeviceAddr, uint16_t RegisterAddr,
Charles MacNeill 5:89031b2f5316 25 uint16_t NumByteToWrite) {
Charles MacNeill 5:89031b2f5316 26 int ret;
Charles MacNeill 5:89031b2f5316 27 uint8_t tmp[TEMP_BUF_SIZE];
Charles MacNeill 5:89031b2f5316 28
Charles MacNeill 5:89031b2f5316 29 if(NumByteToWrite >= TEMP_BUF_SIZE) return -2;
Charles MacNeill 5:89031b2f5316 30
Charles MacNeill 5:89031b2f5316 31 // First, send device address. Then, send data and STOP condition
Charles MacNeill 5:89031b2f5316 32 tmp[0] = RegisterAddr >> 8;
Charles MacNeill 5:89031b2f5316 33 tmp[1] = RegisterAddr & 0x0FF;
Charles MacNeill 5:89031b2f5316 34 memcpy(tmp+2, pBuffer, NumByteToWrite);
Charles MacNeill 5:89031b2f5316 35
Charles MacNeill 5:89031b2f5316 36 ret = write(DeviceAddr, (const char*)tmp, NumByteToWrite+2, false);
Charles MacNeill 5:89031b2f5316 37
Charles MacNeill 5:89031b2f5316 38 if(ret) return -1;
Charles MacNeill 5:89031b2f5316 39 return 0;
Charles MacNeill 5:89031b2f5316 40 }
Charles MacNeill 5:89031b2f5316 41
Charles MacNeill 5:89031b2f5316 42 /**
Charles MacNeill 5:89031b2f5316 43 * @brief Reads a buffer from the I2C peripheral device.
Charles MacNeill 5:89031b2f5316 44 * @param pBuffer pointer to the byte-array to read data in to
Charles MacNeill 5:89031b2f5316 45 * @param DeviceAddr specifies the peripheral device slave address.
Charles MacNeill 5:89031b2f5316 46 * @param RegisterAddr specifies the internal address register
Charles MacNeill 5:89031b2f5316 47 * where to start reading from (must be correctly masked).
Charles MacNeill 5:89031b2f5316 48 * @param NumByteToRead number of bytes to be read.
Charles MacNeill 5:89031b2f5316 49 * @retval 0 if ok,
Charles MacNeill 5:89031b2f5316 50 * @retval -1 if an I2C error has occured
Charles MacNeill 5:89031b2f5316 51 * @note On some devices if NumByteToWrite is greater
Charles MacNeill 5:89031b2f5316 52 * than one, the RegisterAddr must be masked correctly!
Charles MacNeill 5:89031b2f5316 53 */
Charles MacNeill 5:89031b2f5316 54 int VL53L3_i2c_read(uint8_t* pBuffer, uint8_t DeviceAddr, uint16_t RegisterAddr,
Charles MacNeill 5:89031b2f5316 55 uint16_t NumByteToRead) {
Charles MacNeill 5:89031b2f5316 56 int ret;
Charles MacNeill 5:89031b2f5316 57 uint8_t ExpanderData[2];
Charles MacNeill 5:89031b2f5316 58 ExpanderData[0] = RegisterAddr >> 8;
Charles MacNeill 5:89031b2f5316 59 ExpanderData[1] = RegisterAddr & 0x0FF;
Charles MacNeill 5:89031b2f5316 60 /* Send device address, with no STOP condition */
Charles MacNeill 5:89031b2f5316 61
Charles MacNeill 5:89031b2f5316 62 ret = write(DeviceAddr, (const char*)ExpanderData, 2, true);
Charles MacNeill 5:89031b2f5316 63
Charles MacNeill 5:89031b2f5316 64 if(!ret) {
Charles MacNeill 5:89031b2f5316 65 /* Read data, with STOP condition */
Charles MacNeill 5:89031b2f5316 66 ret = read(DeviceAddr, (char*)pBuffer, NumByteToRead, false);
Charles MacNeill 5:89031b2f5316 67 }
Charles MacNeill 5:89031b2f5316 68
Charles MacNeill 5:89031b2f5316 69 if(ret) return -1;
Charles MacNeill 5:89031b2f5316 70 return 0;
Charles MacNeill 5:89031b2f5316 71 }
Charles MacNeill 5:89031b2f5316 72
Charles MacNeill 5:89031b2f5316 73 private:
Charles MacNeill 5:89031b2f5316 74 static const unsigned int TEMP_BUF_SIZE = 256;
Charles MacNeill 5:89031b2f5316 75 };
Charles MacNeill 5:89031b2f5316 76
Charles MacNeill 5:89031b2f5316 77 #endif /* __DEV_53L1X_I2C_H */