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Re: PIC16F689 SPI 如何確認傳送狀態
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資深會員
 
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spi 是同時收發，（時序圖上很清楚）
所以，發射的同時，也會同時接收， 那什麼時候發射完，可以發射下一筆，那當然就是收下一筆資料的時候。 所以 spi 只有一個 bit0 BF 可以檢查
發表於: 2008/3/12 8:50
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PIC16F689 SPI 如何確認傳送狀態
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初級會員
 
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我在看 PIC16F689 的 Spec. 時發現在 p.178 的部分提到
SSPSTAT bit 0 BF: Buffer Full Status bit Receive (SPI and I2 C modes): 1 = Receive complete, SSPBUF is full 0 = Receive not complete, SSPBUF is empty Transmit (I2 C mode only): 1 = Transmit in progress, SSPBUF is full 0 = Transmit complete, SSPBUF is empty 那我 SPI mode 傳送時要檢查哪邊呢 謝謝指教
發表於: 2008/3/11 17:52
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