blob: 332ce56dc839308888809aed30430d17c351e402 [file] [log] [blame]
#include <hostIntf.h>
#include <hostIntf_priv.h>
#include <nanohubPacket.h>
#include <i2c.h>
#define NANOHUB_I2C_SLAVE_ADDRESS 0x55
static uint32_t gBusId;
static void hostIntfI2cPreambleCallback(void *cookie, size_t tx, size_t rx, int err)
{
}
static void hostIntfI2cRxCallback(void *cookie, size_t tx, size_t rx, int err)
{
HostIntfCommCallbackF callback = cookie;
i2cSlaveTxPreamble(gBusId, NANOHUB_PREAMBLE_BYTE,
hostIntfI2cPreambleCallback, NULL);
callback(rx, err);
}
static void hostIntfI2cTxCallback(void *cookie, size_t tx, size_t rx, int err)
{
HostIntfCommCallbackF callback = cookie;
i2cSlaveTxPreamble(gBusId, NANOHUB_PREAMBLE_BYTE,
hostIntfI2cPreambleCallback, NULL);
callback(tx, err);
}
static int hostIntfI2cRequest()
{
return i2cSlaveRequest(gBusId, NANOHUB_I2C_SLAVE_ADDRESS);
}
static int hostIntfI2cRxPacket(void *rxBuf, size_t rxSize,
HostIntfCommCallbackF callback)
{
i2cSlaveEnableRx(gBusId, rxBuf, rxSize, hostIntfI2cRxCallback,
callback);
return 0;
}
static int hostIntfI2cTxPacket(const void *txBuf, size_t txSize,
HostIntfCommCallbackF callback)
{
return i2cSlaveTxPacket(gBusId, txBuf, txSize, hostIntfI2cTxCallback,
callback);
}
static int hostIntfI2cRelease(void)
{
return i2cSlaveRelease(gBusId);
}
static const struct HostIntfComm gI2cComm = {
.request = hostIntfI2cRequest,
.rxPacket = hostIntfI2cRxPacket,
.txPacket = hostIntfI2cTxPacket,
.release = hostIntfI2cRelease,
};
const struct HostIntfComm *hostIntfI2cInit(uint32_t busId)
{
gBusId = busId;
return &gI2cComm;
}