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標題:
STM32學習--讀寫X5043程序
[打印本頁]
作者:
xiongxiao
時間:
2015-5-27 17:55
標題:
STM32學習--讀寫X5043程序
完整程序源代碼工程文件下載地址:
讀寫X5043.RAR
(236.13 KB, 下載次數: 50)
2015-5-27 17:54 上傳
點擊文件名下載附件
下載積分: 黑幣 -5
/*******************************************************************************
title : X5043.C
device : XICOR 512*8bit Programmable Watchdog Supervisory E2PROM
author : szlihongtao
date : 2010-08-25
version : 1.0
note : X25045 驅動程序
*******************************************************************************/
#include "stm32f10x.h"
#include "stm32_m.h"
#include "x5043.h"
//******************************************************************************
static void delay1uS(void)
{
INT8U i;
for(i=0;i<36;++i);
}
//*****************************************************************************
static void set_sck(void)
{
GPIO_SetBits(GPIOC, GPIO_Pin_7);
delay1uS();
}
//*****************************************************************************
static void clr_sck(void)
{
GPIO_ResetBits(GPIOC, GPIO_Pin_7);
delay1uS();
}
//*****************************************************************************
static void set_wp(void)
{
delay1uS();
}
//*****************************************************************************
static void clr_wp(void)
{
delay1uS();
}
//*****************************************************************************
static void set_cs(void)
{
GPIO_SetBits(GPIOC, GPIO_Pin_4);
delay1uS();
}
//*****************************************************************************
static void clr_cs(void)
{
GPIO_ResetBits(GPIOC, GPIO_Pin_4);
delay1uS();
}
//*****************************************************************************
static void set_si(void)
{
GPIO_SetBits(GPIOC, GPIO_Pin_6);
delay1uS();
}
//*****************************************************************************
static void clr_si(void)
{
GPIO_ResetBits(GPIOC, GPIO_Pin_6);
delay1uS();
}
//*****************************************************************************
static INT8U get_so_x5043(void)
{
return (GPIO_ReadInputDataBit(GPIOC,GPIO_Pin_6));
}
//*****************************************************************************
static void set_sio_input(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOC, &GPIO_InitStructure);
delay1uS();
}
//*****************************************************************************
static void set_sio_output(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(GPIOC, &GPIO_InitStructure);
delay1uS();
}
//******************************************************************************
/*25045操作子程序集*/
/*;*****************************************************************************
*
;* Name: RST_WDOG
;* Description: Reset Watchdog Timer
;* Function: This routine resets the watchdog timer without sending a command
;* Calls: None
;* Input: None
;* Outputs: None
;* Register Usage: None
;*******************************************************************************
*/
/*復位DOG*/
void rst_wdog (void)
{
clr_cs();
set_cs();
}
//******************************************************************************
//上電以后,在對25045操作之前必須執行本子程序一次
//******************************************************************************
static void x25045_start(void)
{
set_cs();
clr_cs();
set_cs();
}
/*;*****************************************************************************
;*
;* Name: OUTBYT
;* Description: Sends byte to EEPROM
;* Function: This routine shifts out a byte, starting with the MSB, to the EEPROM
;* Calls: None
;* Input: A = byte to be sent
;* Outputs: None
;* Register Usage: R0, A
;*******************************************************************************
*/
/* 輸出一個數據到25045,此數據可能為地址,先導字,寫入的數據等*/
// data_write(INT8U aa)
//*****************************************************************************
static void outbyt(INT8U data_wr)
{
INT8U i;
set_sio_output();
for (i=0;i<8;++i)
{
clr_sck();
// SI=(aa&0x80);
if (data_wr&0x80)
set_si();
else
clr_si();
set_sck();
data_wr <<= 1;
}
clr_si(); /*使SI處于確定的狀態*/
}
/*;****************************************************************************
*
;* Name: INPUTBYT
;* Description: Recieves byte from EEPROM
;* Function: This routine recieves a byte, MSB first, from the EEPROM
;* Calls: None
;* Input: None
;* Outputs: A = recieved byte
;* Register Usage: R0, A
;******************************************************************************
*/
/*得到一個數據,此數據可能為狀態寄存器數據,讀出的單元數據等*/
// data_read
//*****************************************************************************
static INT8U inputbyt(void)
{
INT8U temp,i;
temp=0;
set_sio_input();
for (i=0;i<8;++i)
{
temp<<=1;
set_sck();
clr_sck();
if (get_so_x5043())
temp |=0x1;
}
return (temp);
}
/*;***************************************************************************
*
;* Name: RDSR_CMD
;* Description: Read Status Register
;* Function: This routine sends the command to read the status register
;* Calls: outbyt, inputbyt
;* Input: None
;* Outputs: A = status registerXicor Application Note AN21
;* Register Usage: A
;****************************************************************************
*/
/*讀狀態寄存器,讀出的數據放入到data_rd中*/
//*****************************************************************************
INT8U rdsr_cmd (void)
{
INT8U data_rd;
clr_cs();
clr_sck();
outbyt(RDSR_INST);
data_rd=inputbyt();
clr_sck();
set_cs();
return (data_rd);
}
/*;***************************************************************************
*
;* Name: WIP_POLL
;* Description: Write-In-Progress Polling
;* Function: This routine polls for completion of a nonvolatile write cycle by examining the
;* WIP bit of the status register
;* Calls: rdsr_cmdXicor Application Note AN21
;* Input: None
;* Outputs: None
;* Register Usage: R1, A
;*****************************************************************************
*/
/*檢測寫入的過程是否結束*/
//*****************************************************************************
static void wip_poll(void)
{
INT8U status1,cnt;
for (cnt=0;cnt<MAX_POLL;++cnt)
{
delay1uS();
status1=rdsr_cmd();
if ((status1&0x01)==0)
break;
}
}
/*;***************************************************************************
*
;* Name: WRSR_CMD
;* Description: Write Status Register
;* Function: This routine sends the command to write the WD0, WD1, BP0 and BP0 EEPROM
;* bits in the status register
;* Calls: outbyt, wip_poll
;* Input: None
;* Outputs: None
;* Register Usage: A
;*****************************************************************************
*/
/*寫狀態寄存器子程序
用于設置看門狗時間,區塊保護等
*/
//*****************************************************************************
void wrsr_cmd(void)
{
x25045_start();
wren_cmd();
clr_sck(); /* Bring SCK low */
clr_cs(); /* Bring /CS low */
outbyt(WRSR_INST) ; /* Send WRSR instruction */
outbyt(STATUS_REG); /* Send status register */
clr_sck(); /* Bring SCK low */
set_cs(); /* Bring /CS high */
wip_poll(); /* Poll for completion of write cycle */
wrdi_cmd();
return;
}
/*;****************************************************************************
*
;* Name: BYTE_WRITE
;* Description: Single Byte Write
;* Function: This routine sends the command to write a single byte to the EEPROM memory
array
;* Calls: outbyt, wip_poll
;* Input: None
;* Outputs: None
;* Register Usage: A, B
;******************************************************************************
*/
/*字節寫入,ee_data為寫入的數據,address為寫入的地址,對于25045而言為000-1FF*/
/*
Write Enable Latch
The X25043/45 contains a “write enable” latch. This
latch must be SET before a write operation will be
completed internally. The WREN instruction will set the
latch and the WRDI instruction will reset the latch. This
latch is automatically reset upon a power-up condition
and after the completion of a byte, page, or status
register write cycle. The latch is also reset if WP is
brought LOW.
字節,頁面,狀態字寫周期結束后,自動會禁止寫操作
*/
//*****************************************************************************
void byte_write(INT16U address,INT8U ee_data)
{
INT8U temp;
wren_cmd();
set_wp();
clr_sck();
clr_cs();
temp=(INT8U)((address&0x0100)>>5);
temp=temp|WRITE_INST;
outbyt(temp); /* Send WRITE instruction including MSB of address */
/*將高位地址左移3位與寫入先導字相或,得到正確的先導字寫入25045*/
temp=address&0xff;
outbyt(temp); /*輸出低位地址到25045*/
outbyt(ee_data); /*寫入數據到25045的對應單元*/
clr_sck();
set_cs();
wip_poll(); /*檢測是否寫完*/
clr_wp();
wrdi_cmd();
return;
}
/*;****************************************************************************
;* Name: BYTE_READ
;* Description: Single Byte Read
;* Function: This routine sends the command to read a single byte from the EEPROM memory
array
;* Calls: outbyt, inputbyt
;* Input: None
;* Outputs: A = read byte
;* Register Usage: A, BXicor Application Note AN21
;******************************************************************************
*/
/*字節讀出,其中dd為讀出的地址,返回的值為讀出的數據*/
//*****************************************************************************
INT8U byte_read(INT16U addr)
{
INT8U temp;
clr_sck();
clr_cs();
temp=(INT8U)((addr&0x0100)>>5);
temp=temp|READ_INST;
outbyt(temp); /* Send READ_INST instruction including MSB of address */
/*將高位地址左移3位與讀出先導字相或,得到正確的先導字寫入25045*/
temp=addr&0xff;
outbyt(temp); /*輸出低位地址到25045*/
temp=inputbyt(); /*得到讀出的數據*/
clr_sck();
set_cs();
return (temp);
}
//*****************************************************************************
// 連續讀多個字節
//*****************************************************************************
void byte_read_sequence(INT16U addr,INT8U arr[],INT16U length)
{
INT8U temp;
INT16U i;
clr_sck();
clr_cs();
temp=(INT8U)((addr&0x0100)>>5);
temp=temp|READ_INST;
outbyt(temp); /* Send READ_INST instruction including MSB of address */
/*將高位地址左移3位與讀出先導字相或,得到正確的先導字寫入25045*/
temp=addr&0xff;
outbyt(temp); /*輸出低位地址到25045*/
length&=512-1;
for(i=0;i<length;++i)
arr[i]=inputbyt(); /*得到讀出的數據*/
clr_sck();
set_cs();
return;
}
/*****************************************************************************
*
;* Name: WREN_CMD
;* Description: Set write enable latch
;* Function: This routine sends the command to enable writes to the EEPROM memory array or
;* status register
;* Calls: outbyt
;* Input: None
;* Outputs: None
;* Register Usage: A
;******************************************************************************
*/
//*****************************************************************************
// 允許寫入數據到X5043
// 寫使能子程序
//*****************************************************************************
void wren_cmd(void)
{
set_wp();
clr_sck(); /* Bring SCK low */
clr_cs(); /* Bring /CS low */
outbyt(WREN_INST); /* Send WREN instruction */
clr_sck(); /* Bring SCK low */
set_cs(); /* Bring /CS high */
clr_wp();
return;
}
//*****************************************************************************
// 禁止寫入數據到X5043
//*****************************************************************************
void wrdi_cmd(void)
{
set_wp();
clr_sck(); /* Bring SCK low */
clr_cs(); /* Bring /CS low */
outbyt(WRDI_INST); /* Send WRDI_INST instruction */
clr_sck(); /* Bring SCK low */
set_cs(); /* Bring /CS high */
clr_wp();
return;
}
//*****************************************************************************
#if 1
#define BASE_ADDR 10
INT8U i,arr[8];
void test_x5043(void)
{
wrsr_cmd();
i=rdsr_cmd();
for(i=0;i<8;++i) arr[i]=0;
for(i=0;i<8;++i)
arr[i]=x5043_rd(i+BASE_ADDR);
//----------------------------------------
for(i=0;i<8;++i)
x5043_wr(i+BASE_ADDR,6*i);
for(i=0;i<8;++i) arr[i]=0;
for(i=0;i<8;++i)
arr[i]=x5043_rd(i+BASE_ADDR);
for(i=0;i<8;++i) arr[i]=0;
byte_read_sequence(BASE_ADDR,arr,8);
//----------------------------------------
x5043_wr(2+BASE_ADDR,17);
for(i=0;i<8;++i)
arr[i]=0;
for(i=0;i<8;++i)
arr[i]=x5043_rd(i+BASE_ADDR);
delay1uS();
}
#endif
//*****************************************************************************
//************************* END ******************************************
//*****************************************************************************
\032
復制代碼
/*******************************************************************************
STM32學習日志(202)----讀寫X5043
編譯環境: EWARM V5.30
硬件環境:51hei
STM32 FW: V3.0.0
作者 : szlihongtao
時間 : 2017-08-25
*******************************************************************************/
/**
******************************************************************************
* @file Project/Template/main.c
* @author MCD Application Team
* @version V3.0.0
* @date 04/06/2009
* @brief Main program body
******************************************************************************
* @copy
*
* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
* TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
* DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
* FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
* CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
*
* <h2><center>© COPYRIGHT 2009 STMicroelectronics</center></h2>
*/
/* Includes ------------------------------------------------------------------*/
#include "stm32f10x.h"
#include "stm32_m.h"
//******************************************************************************
static void delayms(INT16U cnt)
{
INT16U i;
while(cnt--)
for (i=0; i<7333; i++);
}
//******************************************************************************
// 時鐘設置初始化
//******************************************************************************
static void RCC_Configuration(void)
{
ErrorStatus HSEStartUpStatus;
/*
RCC_AdjustHSICalibrationValue 調整內部高速晶振(HSI)校準值
RCC_ITConfig 使能或者失能指定的RCC中斷
RCC_ClearFlag 清除RCC的復位標志位
RCC_GetITStatus 檢查指定的RCC中斷發生與否
RCC_ClearITPendingBit 清除RCC的中斷待處理位
*/
/* RCC system reset(for debug purpose) */
// 時鐘系統復位
RCC_DeInit();
// 使能外部的8M晶振
// 設置外部高速晶振(HSE)
/* Enable HSE */
RCC_HSEConfig(RCC_HSE_ON);
// 使能或者失能內部高速晶振(HSI)
RCC_HSICmd(DISABLE);
// 等待HSE起振
// 該函數將等待直到HSE就緒,或者在超時的情況下退出
/* Wait till HSE is ready */
HSEStartUpStatus = RCC_WaitForHSEStartUp();
if(HSEStartUpStatus == SUCCESS)
{
/* HCLK = SYSCLK */
// 設置AHB時鐘(HCLK)
RCC_HCLKConfig(RCC_SYSCLK_Div1); // 72 MHz
/* PCLK1 = HCLK/2 */
// 設置低速AHB時鐘(PCLK1)
RCC_PCLK1Config(RCC_HCLK_Div2); // 36 MHz
/* PCLK2 = HCLK */
// 設置高速AHB時鐘(PCLK2)
RCC_PCLK2Config(RCC_HCLK_Div1); // 72 MHz
/* ADCCLK = PCLK2/8 */
// 設置ADC時鐘(ADCCLK)
RCC_ADCCLKConfig(RCC_PCLK2_Div8);
// 設置USB時鐘(USBCLK)
// USB時鐘 = PLL時鐘除以1.5
RCC_USBCLKConfig(RCC_USBCLKSource_PLLCLK_1Div5);
// 設置外部低速晶振(LSE)
RCC_LSEConfig(RCC_LSE_OFF);
// 使能或者失能內部低速晶振(LSI)
// LSE晶振OFF
RCC_LSICmd(DISABLE);
// 設置RTC時鐘(RTCCLK)
// 選擇HSE時鐘頻率除以128作為RTC時鐘
RCC_RTCCLKConfig(RCC_RTCCLKSource_HSE_Div128);
// 使能或者失能RTC時鐘
// RTC時鐘的新狀態
RCC_RTCCLKCmd(DISABLE);
/* Flash 2 wait state */
FLASH_SetLatency(FLASH_Latency_2);
/* Enable Prefetch Buffer */
FLASH_PrefetchBufferCmd(FLASH_PrefetchBuffer_Enable);
/* PLLCLK = 8MHz * 9 = 72 MHz */
// 設置PLL時鐘源及倍頻系數
RCC_PLLConfig(RCC_PLLSource_HSE_Div1, RCC_PLLMul_9);
/* Enable PLL */
// 使能或者失能PLL
RCC_PLLCmd(ENABLE);
/* Wait till PLL is ready */
// 檢查指定的RCC標志位設置與否
while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET)
{
}
/* Select PLL as system clock source */
// 設置系統時鐘(SYSCLK)
RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);
/* Wait till PLL is used as system clock source */
// 返回用作系統時鐘的時鐘源
while(RCC_GetSYSCLKSource() != 0x08)
{
}
}
// 使能或者失能AHB外設時鐘
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1
|RCC_AHBPeriph_DMA2
|RCC_AHBPeriph_SRAM
|RCC_AHBPeriph_FLITF
|RCC_AHBPeriph_CRC
|RCC_AHBPeriph_FSMC
|RCC_AHBPeriph_SDIO,DISABLE);
// 使能或者失能APB1外設時鐘
RCC_APB1PeriphClockCmd(RCC_APB1Periph_ALL,DISABLE);
// 強制或者釋放高速APB(APB2)外設復位
RCC_APB2PeriphResetCmd(RCC_APB2Periph_ALL,ENABLE);
// 退出復位狀態
RCC_APB2PeriphResetCmd(RCC_APB2Periph_ALL,DISABLE);
// 強制或者釋放低速APB(APB1)外設復位
RCC_APB1PeriphResetCmd(RCC_APB1Periph_ALL,ENABLE);
// 強制或者釋放后備域復位
RCC_BackupResetCmd(ENABLE);
// 使能或者失能時鐘安全系統
RCC_ClockSecuritySystemCmd(DISABLE);
}
//******************************************************************************
// NVIC設置
//******************************************************************************
static void NVIC_Configuration(void)
{
}
//******************************************************************************
// SysTick設置初始化
//******************************************************************************
static void SysTick_Config1(void)
{
#define SystemFreq 72000000.0 // 單位為Hz
#define TB_SysTick 100000.0 // 單位為uS,與示波器實測一致
INT32U ticks;
ticks=(INT32U)((TB_SysTick/1000000.0)*SystemFreq);
ticks=ticks;
//SysTick_Config(ticks);
}
//******************************************************************************
// GPIO設置
//******************************************************************************
static void GPIO_Configuration(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC
|RCC_APB2Periph_GPIOD, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_7;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(GPIOC, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOC, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3|GPIO_Pin_4;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
GPIO_Init(GPIOD, &GPIO_InitStructure);
}
//******************************************************************************
// 主程序
//******************************************************************************
int main(void)
{
RCC_Configuration();
GPIO_Configuration();
NVIC_Configuration();
SysTick_Config1();
delayms(10);
test_x5043();
for (;;)
{
delayms(100);
GPIOC->ODR ^= GPIO_Pin_5; // led4 toogle
}
}
//******************************************************************************
#ifdef USE_FULL_ASSERT
/**
* @brief Reports the name of the source file and the source line number
* where the assert_param error has occurred.
* @param file: pointer to the source file name
* @param line: assert_param error line source number
* @retval : None
*/
void assert_failed(uint8_t* file, uint32_t line)
{
/* User can add his own implementation to report the file name and line number,
ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
/* Infinite loop */
while (1)
{
}
}
#endif
/**
* @}
*/
//******************************************************************************
/******************* (C) COPYRIGHT 2009 STMicroelectronics *****END OF FILE****/
//******************************************************************************
/*
LED2---------PC7
LED3---------PC6
LED4---------PC5
LED5---------PC4
KEY2---------PD3
KEY3---------PD4
*/
復制代碼
作者:
roumao
時間:
2017-12-19 19:20
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