ksz8851snl_spi.c File Reference
SPI interface API for KSZ8851SNL Ethernet controller.
- Version
- 5.5.0
License
Copyright 2015 Silicon Labs, Inc. http://www.silabs.com
This file is licensed under the Silabs License Agreement. See the file "Silabs_License_Agreement.txt" for details. Before using this software for any purpose, you must agree to the terms of that agreement.
Definition in file ksz8851snl_spi.c
.
#include <stdio.h>
#include <stdint.h>
#include "ksz8851snl_spi.h
"
#include "em_assert.h
"
#include "em_common.h
"
#include "em_gpio.h
"
#include "spidrv.h
"
Macros | |
#define | ADDRESS_MS2B_POS 0x06 |
#define | ADDRESS_SHIFT 0x02 |
#define | BOGUS_BYTE 0xFF |
#define | BYTE_ENABLE 0x03 |
#define | BYTE_ENABLE_SHIFT 0x02 |
#define | ETH_CS_PIN 3 |
#define | ETH_CS_PORT gpioPortD |
#define | OPCODE_FIFO_READ 0x80 |
#define | OPCODE_FIFO_WRITE 0xC0 |
#define | OPCODE_REG_READ 0x00 |
#define | OPCODE_REG_WRITE 0x40 |
#define | REG_MASK 0x03 |
Functions | |
void | KSZ8851SNL_SPI_Init (void) |
KSZ8851SNL_SPI_Init Initialize SPI interface to Ethernet controller. | |
void | KSZ8851SNL_SPI_ReadFifo (int numBytes, uint8_t *data) |
Read data from the ethernet controller RX FIFO. | |
uint16_t | KSZ8851SNL_SPI_ReadRegister (uint8_t reg) |
Read ethernet controller register. | |
static void | KSZ8851SNL_SPI_Receive (int numBytes, uint8_t *buffer) |
Receive a series of bytes over the spi link. | |
static void | KSZ8851SNL_SPI_SetChipSelect (bool enable) |
Select/deselect the ksz8851snl chip. This will clear/set the chip select GPIO pin connected to the ksz8851snl. The chip has active low chip select. | |
static void | KSZ8851SNL_SPI_Transmit (int numBytes, const uint8_t *data) |
Transmits a series of bytes over the spi link. | |
void | KSZ8851SNL_SPI_WriteFifo (int numBytes, const uint8_t *data) |
Continue writing ethernet controller FIFO. | |
void | KSZ8851SNL_SPI_WriteFifoBegin (void) |
Start writing to the ethernet controller FIFO. | |
void | KSZ8851SNL_SPI_WriteFifoEnd (void) |
Stop read/write the ethernet controller FIFO. | |
void | KSZ8851SNL_SPI_WriteRegister (uint8_t reg, uint16_t value) |
Write ethernet controller register. | |
Macro Definition Documentation
#define ADDRESS_MS2B_POS 0x06 |
Most significant 2 Bytes of the address position
Definition at line 30
of file ksz8851snl_spi.c
.
Referenced by KSZ8851SNL_SPI_ReadRegister(), and KSZ8851SNL_SPI_WriteRegister().
#define ADDRESS_SHIFT 0x02 |
Number of positions to shift the register address
Definition at line 31
of file ksz8851snl_spi.c
.
Referenced by KSZ8851SNL_SPI_ReadRegister(), and KSZ8851SNL_SPI_WriteRegister().
#define BOGUS_BYTE 0xFF |
Bogus byte used for receiving via SPI
Definition at line 24
of file ksz8851snl_spi.c
.
Referenced by KSZ8851SNL_SPI_Init().
#define BYTE_ENABLE 0x03 |
Enable 2 byte register read/write
Definition at line 32
of file ksz8851snl_spi.c
.
Referenced by KSZ8851SNL_SPI_ReadRegister(), and KSZ8851SNL_SPI_WriteRegister().
#define BYTE_ENABLE_SHIFT 0x02 |
Number of positions to shitf the byte enable bits
Definition at line 33
of file ksz8851snl_spi.c
.
Referenced by KSZ8851SNL_SPI_ReadRegister(), and KSZ8851SNL_SPI_WriteRegister().
#define ETH_CS_PIN 3 |
SPI CHIP SELECT Pin
Definition at line 37
of file ksz8851snl_spi.c
.
Referenced by KSZ8851SNL_SPI_Init(), and KSZ8851SNL_SPI_SetChipSelect().
#define ETH_CS_PORT gpioPortD |
SPI CHIP SELECT Port
Definition at line 38
of file ksz8851snl_spi.c
.
Referenced by KSZ8851SNL_SPI_Init(), and KSZ8851SNL_SPI_SetChipSelect().
#define OPCODE_FIFO_READ 0x80 |
Opcode for reading from FIFO
Definition at line 28
of file ksz8851snl_spi.c
.
Referenced by KSZ8851SNL_SPI_ReadFifo().
#define OPCODE_FIFO_WRITE 0xC0 |
Opcode for writing to FIFO
Definition at line 29
of file ksz8851snl_spi.c
.
Referenced by KSZ8851SNL_SPI_WriteFifoBegin().
#define OPCODE_REG_READ 0x00 |
Opcode for reading a register
Definition at line 26
of file ksz8851snl_spi.c
.
Referenced by KSZ8851SNL_SPI_ReadRegister().
#define OPCODE_REG_WRITE 0x40 |
Opcode for writing a register
Definition at line 27
of file ksz8851snl_spi.c
.
Referenced by KSZ8851SNL_SPI_WriteRegister().
#define REG_MASK 0x03 |
Register mask
Definition at line 25
of file ksz8851snl_spi.c
.
Referenced by KSZ8851SNL_SPI_ReadRegister(), and KSZ8851SNL_SPI_WriteRegister().
Function Documentation
|
static |
Receive a series of bytes over the spi link.
- Parameters
-
[in] numBytes
the number of data bytes to be received [in] buffer
the destination buffer
Definition at line 111
of file ksz8851snl_spi.c
.
References DMADRV_MAX_XFER_COUNT, ECODE_EMDRV_SPIDRV_OK, SL_MIN, and SPIDRV_MReceiveB().
Referenced by KSZ8851SNL_SPI_ReadFifo().
|
static |
Select/deselect the ksz8851snl chip. This will clear/set the chip select GPIO pin connected to the ksz8851snl. The chip has active low chip select.
- Parameters
-
[in] enable
true will select the ksz8851snl chip false will deselect the ksz8851snl chip.
Definition at line 139
of file ksz8851snl_spi.c
.
References ETH_CS_PIN, ETH_CS_PORT, GPIO_PinOutClear(), and GPIO_PinOutSet().
Referenced by KSZ8851SNL_SPI_ReadFifo(), KSZ8851SNL_SPI_ReadRegister(), KSZ8851SNL_SPI_WriteFifoBegin(), KSZ8851SNL_SPI_WriteFifoEnd(), and KSZ8851SNL_SPI_WriteRegister().
|
static |
Transmits a series of bytes over the spi link.
- Parameters
-
[in] numBytes
the number of data bytes to be transmitted [in] data
actual data to be transmitted
Definition at line 82
of file ksz8851snl_spi.c
.
References DMADRV_MAX_XFER_COUNT, ECODE_EMDRV_SPIDRV_OK, SL_MIN, and SPIDRV_MTransmitB().
Referenced by KSZ8851SNL_SPI_ReadFifo(), KSZ8851SNL_SPI_WriteFifo(), KSZ8851SNL_SPI_WriteFifoBegin(), and KSZ8851SNL_SPI_WriteRegister().