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Re: 如何用C18的SPI函數編程TLC2543
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版主
 
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SPI 傳送都是以 Byte 或 word 為單位的，PIC18F 系列一定是以 8-bit 為傳送單位，所以應該不會有被低四位蓋掉。
這裡有一些SPI的參考筆記: AN1000 AN1018 AN703 AN719 AN746
發表於: 2007/4/19 11:30
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如何用C18的SPI函數編程TLC2543
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新會員
 
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設成12位數據，高位先出，會不會高8位被低4位沖掉？
我寫的代碼，顯示結果總是0。我用的單片機是PIC18F452。 OpenSPI(SPI_FOSC_16,MODE_00,SMPEND); TLC2543_CS = 0; var = WriteSPI(0x04); high = ReadSPI(); low = ReadSPI(); TLC2543_CS = 1;
發表於: 2007/4/18 16:13
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