iic
Xilinx Vitis Drivers API Documentation
xiic_low_level_dynamic_eeprom_example.c File Reference

Overview

This file consists of a polled mode design example which uses the Xilinx IIC device in dynamic mode and low-level driver to exercise the EEPROM.

The XIic_DynSend() API is used to transmit the data and XIic_DynRecv() API is used to receive the data.

The example is tested on ML300/ML310/ML403/ML501/ML507/ML510 Xilinx boards.

The ML310/ML410/ML510 boards have a on-board 64 Kb serial IIC EEPROM (Microchip 24LC64A). The WP pin of the IIC EEPROM is hardwired to ground on this board.

The ML300 board has an on-board 32 Kb serial IIC EEPROM(Microchip 24LC32A). The WP pin of the IIC EEPROM has to be connected to ground for this example. The WP is connected to pin Y3 of the FPGA.

The ML403 board has an on-board 4 Kb serial IIC EEPROM(Microchip 24LC04A). The WP pin of the IIC EEPROM is hardwired to ground on this board.

The ML501/ML505/ML507/ML605/SP601/SP605 boards have an on-board 8 Kb serial IIC EEPROM(STM M24C08). The WP pin of the IIC EEPROM is hardwired to ground on these boards.

The AddressType for ML300/ML310/ML410/ML510 boards should be u16 as the address pointer in the on board EEPROM is 2 bytes.

The AddressType for ML403/ML501/ML505/ML507/ML605/SP601/SP605 boards should be u8 as the address pointer for the on board EEPROM is 1 byte.

The 7 bit IIC Slave address of the IIC EEPROM on the ML300/ML310/ML410/ML403/ ML501/ML505/ML507/ML510 boards is 0x50. The 7 bit IIC Slave address of the IIC EEPROM on the ML605/SP601/SP605 boards is 0x54. Refer to the User Guide's of the respective boards for further information about the IIC slave address of IIC EEPROM's.

The define EEPROM_ADDRESS in this file needs to be changed depending on the board on which this example is to be run.

This code assumes that no Operating System is being used.

Note

None.

MODIFICATION HISTORY:
Ver   Who  Date     Changes


1.00a mta 03/20/06 Created. 2.00a sdm 09/22/09 Converted all register accesses to 32 bit access. 2.01a ktn 03/17/10 Updated the information about the EEPROM's used on ML605/SP601/SP605 boards. Updated the example so that it can be used to access the entire IIC EEPROM for devices like M24C04/M24C08 that use LSB bits of the IIC device select code (IIC slave address) to specify the higher address bits of the EEPROM internal address. 3.3 sk 06/18/16 checked bytes written with the input byte count and returns error if the value is not matched. 3.4 ms 01/23/17 Added xil_printf statement in main function to ensure that "Successfully ran" and "Failed" strings are available in all examples. This is a fix for CR-965028. ms 04/05/17 Modified Comment lines in functions to recognize it as documentation block for doxygen generation.

Functions

u8 EepromWriteByte (u8 *BufferPtr, u8 ByteCount)
 This function writes a buffer of bytes to the IIC serial EEPROM. More...
 
int main (void)
 Main function to call the low level Dynamic EEPROM example. More...
 

Function Documentation

u8 EepromWriteByte ( u8 *  BufferPtr,
u8  ByteCount 
)

This function writes a buffer of bytes to the IIC serial EEPROM.

Parameters
BufferPtrcontains the address of the data to write.
ByteCountcontains the number of bytes in the buffer to be written. Note that this should not exceed the page size of the EEPROM as noted by the constant PAGE_SIZE.
Returns
The number of bytes written, a value less than that which was specified as an input indicates an error.
Note
one.

References XIic_DynSend(), and XIIC_STOP.

Referenced by ReadWriteVerify().

int main ( void  )

Main function to call the low level Dynamic EEPROM example.

Returns
XST_SUCCESS if successful else XST_FAILURE.
Note
None.