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1 Anonymous Users
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Re: App001實驗版 SPI EEPROM 的問題
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新會員
 
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J9 使用4 個 Jumper
J10 全部 Jumper 拿掉 這些都有做 謝謝您
發表於: 2006/4/27 19:44
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Re: App001實驗版 SPI EEPROM 的問題
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版主
 
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先檢查J9是否都有短路，J10全部開路。
J9 : 是控制25LCxxx的Jumper J10: 則是I2C 24LCxxx的Jumper
發表於: 2006/4/27 15:12
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App001實驗版 SPI EEPROM 的問題
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新會員
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請教各位先進
我想要對板子上的EEPROM來作資料的讀寫 但是一直不管程式碼怎麼改 都得不到我覺得正確的結果 以下是我的程式碼 不知道我哪邊有寫錯 還請各位指導一下 /*Initial*/ STAT_SMP = 1;// Input data sampled at end of data output time STAT_CKE = 0;// Transmit occurs on transition from Idle to active clock state SSPCON = 0x21;//SPI Master mode, clock = FOSC/16 CKP = 0;// Idle state for clock is a low level SSPEN = 1;// Enables serial port and configures SCK, SDO, SDI, and SS as serial port pins TRISC5 = 0;//SDO TRISC3 = 0;//SCK TRISC4 = 1;//SDI TRISA5 = 0; TRISA4 = 0; /*Write*/ WCOL = 0; SSPBUF = 0x05; //Read Status Register while( WCOL == 1 ) { WCOL = 0; SSPBUF = 0x05; *pClearWCOL = 1; } /*Read*/ unsigned char result = 0; while( STAT_BF == 0 ) ; result = SSPBUF; 結果 result = 0xFF; 又如果是資料寫入某個位址 再讀出某個位址的資料 結果不是 0x00就是0xFF 就是不會是我剛寫入的資料 還請大大們幫幫忙 謝謝
發表於: 2006/4/26 3:34
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