From cc9ef9bdc247703f66c936d213f729c6665b10b5 Mon Sep 17 00:00:00 2001 From: P L Sai Krishna Date: Wed, 8 Oct 2014 15:16:10 +0530 Subject: [PATCH] iicps: Deleted repeated start example. This patch deletes repeated start example. Signed-off-by: P L Sai Krishna --- .../examples/xiicps_repeated_start_example.c | 464 ------------------ 1 file changed, 464 deletions(-) delete mode 100644 XilinxProcessorIPLib/drivers/iicps/examples/xiicps_repeated_start_example.c diff --git a/XilinxProcessorIPLib/drivers/iicps/examples/xiicps_repeated_start_example.c b/XilinxProcessorIPLib/drivers/iicps/examples/xiicps_repeated_start_example.c deleted file mode 100644 index af8297f6..00000000 --- a/XilinxProcessorIPLib/drivers/iicps/examples/xiicps_repeated_start_example.c +++ /dev/null @@ -1,464 +0,0 @@ -/****************************************************************************** -* -* Copyright (C) 2014 Xilinx, Inc. All rights reserved. -* -* Permission is hereby granted, free of charge, to any person obtaining a copy -* of this software and associated documentation files (the "Software"), to deal -* in the Software without restriction, including without limitation the rights -* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -* copies of the Software, and to permit persons to whom the Software is -* furnished to do so, subject to the following conditions: -* -* The above copyright notice and this permission notice shall be included in -* all copies or substantial portions of the Software. -* -* Use of the Software is limited solely to applications: -* (a) running on a Xilinx device, or -* (b) that interact with a Xilinx device through a bus or interconnect. -* -* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -* XILINX CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, -* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF -* OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE -* SOFTWARE. -* -* Except as contained in this notice, the name of the Xilinx shall not be used -* in advertising or otherwise to promote the sale, use or other dealings in -* this Software without prior written authorization from Xilinx. -* -******************************************************************************/ -/*****************************************************************************/ -/** -* @file xiicps_repeated_start_example.c -* -* This file consists of a repeated start example using xiicps driver -* in polled mode. The slave used is an EEPROM. -* -* The example is tested with a 2Kb/8Kb serial IIC EEPROM (ST M24C02/M24C08). -* The WP pin of this EEPROM is hardwired to ground in the HW in which this -* was tested. -* This example can be used directly to read upto 16 pages -* from start address in this EEPROM (Since single address byte). -* -* The AddressType should be u8 as the address pointer in the on-board -* EEPROM is 1 bytes. -* -* This code assumes that no Operating System is being used. -* -* @note -* -* None. -* -* 
-* MODIFICATION HISTORY:
-*
-* Ver   Who  Date     Changes
-* ----- ---- -------- ---------------------------------------------------------
-* 2.1   hk   03/15/10 First release
-*
-*
-* -******************************************************************************/ - -/***************************** Include Files *********************************/ - -#include "xparameters.h" -#include "sleep.h" -#include "xiicps.h" -#include "xil_printf.h" - -/************************** Constant Definitions *****************************/ - -/* - * The following constants map to the XPAR parameters created in the - * xparameters.h file. They are defined here such that a user can easily - * change all the needed parameters in one place. - */ -#define IIC_DEVICE_ID XPAR_XIICPS_0_DEVICE_ID - -/* - * The following constant defines the address of the IIC Slave device on the - * IIC bus. Note that since the address is only 7 bits, this constant is the - * address divided by 2. - */ -#define IIC_SLAVE_ADDR 0x54 -#define IIC_SCLK_RATE 100000 -#define IIC_MUX_ADDRESS 0x74 - -/* - * The page size determines how much data should be written at a time. - * The write function should be called with this as a maximum byte count. - */ -#define PAGE_SIZE 16 - -/* - * The Starting address in the IIC EEPROM on which this test is performed. - */ -#define EEPROM_START_ADDRESS 0 - -/**************************** Type Definitions *******************************/ - -/* - * The AddressType should be u8 as the address pointer in the on-board - * EEPROM is 1 bytes. - */ -typedef u8 AddressType; - -/***************** Macros (Inline Functions) Definitions *********************/ - -/************************** Function Prototypes ******************************/ - -int IicPsRepeatedStartExample(void); -int EepromWriteData(u16 ByteCount); -int MuxInit(void); -int EepromReadDataRepStart(u8 *BufferPtr, u16 ByteCount); - -/************************** Variable Definitions *****************************/ - -XIicPs IicInstance; /* The instance of the IIC device. */ - -/* - * Write buffer for writing a page. - */ -u8 WriteBuffer[sizeof(AddressType) + PAGE_SIZE]; - -u8 ReadBuffer[PAGE_SIZE*20]; /* Read buffer for reading a page. */ - -/************************** Function Definitions *****************************/ - -/*****************************************************************************/ -/** -* Main function to call the Iic repeated start example. -* -* @param None. -* -* @return XST_SUCCESS if successful else XST_FAILURE. -* -* @note None. -* -******************************************************************************/ -int main(void) -{ - int Status; - - xil_printf("IIC Repeated Start Example Test \r\n"); - - /* - * Run the Iic repeated start example. - */ - Status = IicPsRepeatedStartExample(); - if (Status != XST_SUCCESS) { - xil_printf("IIC Repeated Start Example Test Failed\r\n"); - return XST_FAILURE; - } - - xil_printf("Successfully ran IIC Repeated Start Example Test\r\n"); - return XST_SUCCESS; -} - -/*****************************************************************************/ -/** -* This function writes, reads, and verifies the data to the IIC EEPROM. -* Page write is used. Buffered read with repeated start option is done. -* -* @param None. -* -* @return XST_SUCCESS if successful else XST_FAILURE. -* -* @note None. -* -******************************************************************************/ -int IicPsRepeatedStartExample(void) -{ - u32 Index; - int Status; - XIicPs_Config *ConfigPtr; /* Pointer to configuration data */ - AddressType Address = EEPROM_START_ADDRESS; - AddressType AddressTemp; - int PageCnt; - int NumPages = 16; - - /* - * Initialize the IIC driver so that it is ready to use. - */ - ConfigPtr = XIicPs_LookupConfig(IIC_DEVICE_ID); - if (ConfigPtr == NULL) { - return XST_FAILURE; - } - - Status = XIicPs_CfgInitialize(&IicInstance, ConfigPtr, - ConfigPtr->BaseAddress); - if (Status != XST_SUCCESS) { - return XST_FAILURE; - } - - /* - * Set the IIC serial clock rate. - */ - XIicPs_SetSClk(&IicInstance, IIC_SCLK_RATE); - - /* - * Set the channel value in IIC Mux. - */ - Status = MuxInit(); - if (Status != XST_SUCCESS) { - return XST_FAILURE; - } - - AddressTemp = Address; - for(PageCnt = 0; PageCnt < NumPages; PageCnt++) { - /* - * Initialize the data to write and the read buffer. - */ - if (sizeof(AddressTemp) == 1) { - WriteBuffer[0] = (u8) (AddressTemp); - } else { - WriteBuffer[0] = (u8) (AddressTemp >> 8); - WriteBuffer[1] = (u8) (AddressTemp); - } - - for (Index = 0; Index < PAGE_SIZE; Index++) { - WriteBuffer[sizeof(AddressTemp) + Index] = 0xFF; - ReadBuffer[Index] = 0; - } - - /* - * Write to the EEPROM. - */ - Status = EepromWriteData(sizeof(AddressTemp) + PAGE_SIZE); - if (Status != XST_SUCCESS) { - return XST_FAILURE; - } - - AddressTemp += PAGE_SIZE; - } - - /* - * Read from the EEPROM. - */ - Status = EepromReadDataRepStart(ReadBuffer, PAGE_SIZE*NumPages); - if (Status != XST_SUCCESS) { - return XST_FAILURE; - } - - /* - * Verify the data read against the data written. - */ - for (Index = 0; Index < PAGE_SIZE*NumPages; Index++) { - if (ReadBuffer[Index] != - WriteBuffer[Index%PAGE_SIZE + sizeof(Address)]) { - return XST_FAILURE; - } - - ReadBuffer[Index] = 0; - } - - AddressTemp = Address; - for(PageCnt = 0; PageCnt < NumPages; PageCnt++) { - /* - * Initialize the data to write and the read buffer. - */ - if (sizeof(AddressTemp) == 1) { - WriteBuffer[0] = (u8) (AddressTemp); - } else { - WriteBuffer[0] = (u8) (AddressTemp >> 8); - WriteBuffer[1] = (u8) (AddressTemp); - } - - for (Index = 0; Index < PAGE_SIZE; Index++) { - WriteBuffer[sizeof(AddressTemp) + Index] = Index + 10; - ReadBuffer[Index] = 0; - } - - /* - * Write to the EEPROM. - */ - Status = EepromWriteData(sizeof(AddressTemp) + PAGE_SIZE); - if (Status != XST_SUCCESS) { - return XST_FAILURE; - } - AddressTemp += PAGE_SIZE; - } - - /* - * Read from the EEPROM. - */ - Status = EepromReadDataRepStart(ReadBuffer, PAGE_SIZE*NumPages); - if (Status != XST_SUCCESS) { - return XST_FAILURE; - } - - /* - * Verify the data read against the data written. - */ - for (Index = 0; Index < PAGE_SIZE*NumPages; Index++) { - if (ReadBuffer[Index] != - WriteBuffer[Index%PAGE_SIZE + sizeof(Address)]) { - return XST_FAILURE; - } - - ReadBuffer[Index] = 0; - } - - return XST_SUCCESS; -} - -/*****************************************************************************/ -/** -* This function writes a buffer of data to the IIC serial EEPROM. -* -* @param ByteCount contains the number of bytes in the buffer to be -* written. -* -* @return XST_SUCCESS if successful else XST_FAILURE. -* -* @note The Byte count should not exceed the page size of the EEPROM as -* noted by the constant PAGE_SIZE. -* -******************************************************************************/ -int EepromWriteData(u16 ByteCount) -{ - int Status; - - /* - * Send the Data. - */ - Status = XIicPs_MasterSendPolled(&IicInstance, WriteBuffer, - ByteCount, IIC_SLAVE_ADDR); - if (Status != XST_SUCCESS) { - return XST_FAILURE; - } - - /* - * Wait until bus is idle to start another transfer. - */ - if (!(IicInstance.IsRepeatedStart)) { - while (XIicPs_BusIsBusy(&IicInstance)); - } - - /* - * Wait for a bit of time to allow the programming to complete - */ - usleep(250000); - - return XST_SUCCESS; -} - -/*****************************************************************************/ -/** -* This function reads data from the IIC serial EEPROM into a specified buffer. -* -* @param BufferPtr contains the address of the data buffer to be filled. -* @param ByteCount contains the number of bytes in the buffer to be read. -* -* @return XST_SUCCESS if successful else XST_FAILURE. -* -* @note None. -* -******************************************************************************/ -int EepromReadDataRepStart(u8 *BufferPtr, u16 ByteCount) -{ - int Status; - AddressType Address = EEPROM_START_ADDRESS; - - /* - * Enable repeated start option. - * This call will give an indication to the driver. - * The hold bit is actually set before beginning the following transfer - */ - XIicPs_SetOptions(&IicInstance, XIICPS_REP_START_OPTION); - - /* - * Position the Pointer in EEPROM. - */ - if (sizeof(Address) == 1) { - WriteBuffer[0] = (u8) (Address); - } - else { - WriteBuffer[0] = (u8) (Address >> 8); - WriteBuffer[1] = (u8) (Address); - } - - Status = EepromWriteData(sizeof(Address)); - if (Status != XST_SUCCESS) { - return XST_FAILURE; - } - - /* - * Disbale repeated start option. - * This call will give an indication to the driver. - * The hold bit is actually reset when the following transfer ends. - */ - XIicPs_ClearOptions(&IicInstance, XIICPS_REP_START_OPTION); - - /* - * Receive the Data. - */ - Status = XIicPs_MasterRecvPolled(&IicInstance, BufferPtr, - ByteCount, IIC_SLAVE_ADDR); - if (Status != XST_SUCCESS) { - return XST_FAILURE; - } - - /* - * Wait until bus is idle to start another transfer. - */ - while (XIicPs_BusIsBusy(&IicInstance)); - - return XST_SUCCESS; -} - -/*****************************************************************************/ -/** -* This function initializes the IIC MUX to select EEPROM. -* -* @param None. -* -* @return XST_SUCCESS if pass, otherwise XST_FAILURE. -* -* @note None. -* -****************************************************************************/ -int MuxInit(void) -{ - u8 WriteBuffer; - u8 MuxIicAddr = IIC_MUX_ADDRESS; - u8 Buffer = 0; - int Status = 0; - - /* - * Channel select value for EEPROM. - */ - WriteBuffer = 0x04; - - /* - * Send the Data. - */ - Status = XIicPs_MasterSendPolled(&IicInstance, &WriteBuffer,1, - MuxIicAddr); - if (Status != XST_SUCCESS) { - return XST_FAILURE; - } - - /* - * Wait until bus is idle to start another transfer. - */ - while (XIicPs_BusIsBusy(&IicInstance)); - - /* - * Receive the Data. - */ - Status = XIicPs_MasterRecvPolled(&IicInstance, &Buffer,1, MuxIicAddr); - if (Status != XST_SUCCESS) { - return XST_FAILURE; - } - - /* - * Wait until bus is idle to start another transfer. - */ - while (XIicPs_BusIsBusy(&IicInstance)); - - return XST_SUCCESS; -}