Embedded Application Programming Interface - picmg

* Timeout due to clock stretching
| EAPI_STATUS_TIMEOUT
* startNak | EAPI_STATUS_NOT_FOUND
* startNak | EAPI_STATUS_NOT_FOUND
* startAckNak | EAPI_STATUS_WRITE_ERROR
* ReadBCnt>(RBufLen+1) | EAPI_STATUS_MORE_DATA
* Common Error | Common Error Code
* Else | EAPI_STATUS_SUCCESS
*/
EApiStatus_t
EAPI_CALLTYPE
EApiI2CWriteReadRaw(
__IN EApiId_t Id , /* I2C Bus Id */
__IN uint8_t Addr , /* Encoded 7Bit I2C
* Device Address
*/
__INOPT void *pWBuffer , /* Write Data pBuffer */
__IN uint32_t WriteBCnt, /* Number of Bytes to
* write plus 1
*/
__OUTOPT void *pRBuffer , /* Read Data pBuffer */
__IN uint32_t RBufLen , /* Data pBuffer Length */
__IN uint32_t ReadBCnt /* Number of Bytes to
* Read plus 1
*/
);
#define EApiI2CWriteRaw(Id, Addr, pBuffer, ByteCnt) \
EApiI2CWriteReadRaw(Id, Addr, pBuffer, ByteCnt, NULL, 0, 0)
#define EApiI2CReadRaw(Id, Addr, pBuffer, BufLen, ByteCnt) \
EApiI2CWriteReadRaw(Id, Addr, NULL, 0, pBuffer, BufLen, ByteCnt)
#define EAPI_I2C_ENC_10BIT_ADDR(x) EAPI_UINT32_C(((x)&0xFF)|(((x)&0x0300)1)&0x300))
#define EAPI_I2C_IS_10BIT_ADDR(x) (((x)&0xF800)==0xF000)
#define EAPI_I2C_IS_7BIT_ADDR(x) (!EAPI_I2C_IS_10BIT_ADDR(x))
/*
* I2C Transfer Types
* Bits 31 & 30 Selects Command Type
*
* Transfer Type 1:
* Address Format : 7Bit
* Command Type : None
* Data Direction : Write
* StartAckAck Stop
*
* Transfer Type 2:
* Address Format : 7Bit
* Command Type : None
* Data Direction : Read
* StartAckNak Stop
*
* Transfer Type 3:
* Address Format : 7Bit
* Command Type : Standard
* Data Direction : Write
* StartAckAckAck Stop
*
* Transfer Type 4:
* Address Format : 7Bit
* Command Type : Standard
* Data Direction : Read
* StartAckAck
* StartAckNak Stop
*
* Transfer Type 5:
* Address Format : 7Bit
* Command Type : Extended
* Data Direction : Write
* StartAckAckAckAck Stop
*
* Transfer Type 6:
* Address Format : 7Bit
* Command Type : Extended
* Data Direction : Read
* StartAckAckAck
PICMG® EAPI R1.0, August 8, 2010 page 64 of 83