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Fix pure i2c block read in Linux

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This commit is contained in:
Adam Honse 2021-12-29 03:45:12 -06:00
parent 101550bb6c
commit 46d8ca718e
1 changed files with 13 additions and 2 deletions
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15
i2c_smbus/i2c_smbus_linux.cpp
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@ -34,6 +34,7 @@ s32 i2c_smbus_linux::i2c_xfer(u8 addr, char read_write, int* size, u8* data)
{
i2c_rdwr_ioctl_data rdwr;
i2c_msg msg;
s32 ret_val;
msg.addr = addr;
msg.flags = read_write;
@ -44,8 +45,18 @@ s32 i2c_smbus_linux::i2c_xfer(u8 addr, char read_write, int* size, u8* data)
rdwr.msgs = &msg;
rdwr.nmsgs = 1;
ioctl(handle, I2C_SLAVE, addr);
return ioctl(handle, I2C_RDWR, &rdwr);
ret_val = ioctl(handle, I2C_RDWR, &rdwr);
/*-------------------------------------------------*\
| If operation was a read, copy read data and size |
\*-------------------------------------------------*/
if(read_write == I2C_SMBUS_READ)
{
*size = msg.len;
memcpy(data, &msg.buf, *size);
}
return ret_val;
}
#include "Detector.h"