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Fix I2C delays

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This commit is contained in:
d0k3 2017-06-20 00:26:57 +02:00
parent 2861b9516b
commit 27426eae44
1 changed files with 12 additions and 11 deletions
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23
source/common/i2c.c
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@ -1,6 +1,5 @@
#include "i2c.h"
void wait(u64 amount);
#include "timer.h"
//-----------------------------------------------------------------------------
@ -89,15 +88,15 @@ u8 i2cReadRegister(u8 dev_id, u8 reg) {
i2cWaitBusy(bus_id);
i2cStop(bus_id, 1);
i2cWaitBusy(bus_id);
wait_msec(3ULL);
return *i2cGetDataReg(bus_id);
}
}
*i2cGetCntReg(bus_id) = 0xC5;
i2cWaitBusy(bus_id);
}
wait(3ULL);
wait_msec(3ULL);
return 0xff;
}
@ -113,8 +112,10 @@ bool i2cReadRegisterBuffer(unsigned int dev_id, int reg, u8* buffer, size_t buf_
i2cWaitBusy(bus_id);
*i2cGetCntReg(bus_id) = 0xC5;
i2cWaitBusy(bus_id);
if (++j >= 8)
if (++j >= 8) {
wait_msec(3ULL);
return false;
}
}
if (buf_size != 1) {
@ -131,8 +132,7 @@ bool i2cReadRegisterBuffer(unsigned int dev_id, int reg, u8* buffer, size_t buf_
i2cWaitBusy(bus_id);
buffer[buf_size - 1] = *i2cGetDataReg(bus_id);
wait(3ULL);
wait_msec(3ULL);
return true;
}
@ -146,14 +146,15 @@ bool i2cWriteRegister(u8 dev_id, u8 reg, u8 data) {
*i2cGetDataReg(bus_id) = data;
*i2cGetCntReg(bus_id) = 0xC1;
i2cStop(bus_id, 0);
if (i2cGetResult(bus_id))
if (i2cGetResult(bus_id)) {
wait_msec(3ULL);
return true;
}
}
*i2cGetCntReg(bus_id) = 0xC5;
i2cWaitBusy(bus_id);
}
wait(3ULL);
wait_msec(3ULL);
return false;
}