48 lines
824 B
Plaintext
48 lines
824 B
Plaintext
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/*
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Uart2Spi
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Copyright 2012 - Florent Kermarrec - florent@enjoy-digital.fr
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Protocol:
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-Write : 0x01 + 16b Addr + 8b Data
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-Read : 0x02 + 16b Addr + 8b Don't Care
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Todo:
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Support Spi Burst Mode
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*/
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#include <SPI.h>
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#include <spiFpga.h>
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void setup() {
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SF.begin();
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SPI.setClockDivider(8);
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Serial.begin(115200);
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}
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int cmd = 0;
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void loop()
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{
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if (Serial.available() == 4)
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{
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cmd = Serial.read();
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//Write Cmd
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if (cmd == 0x01)
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{
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char addrMsb = Serial.read();
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char addrLsb = Serial.read();
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char data = Serial.read();
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SF.wr(addrMsb<<8|addrLsb, data);
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}
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//Read Cmd
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if (cmd == 0x02)
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{
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char addrMsb = Serial.read();
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char addrLsb = Serial.read();
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Serial.read();
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char data;
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data = SF.rd(addrMsb<<8|addrLsb);
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Serial.print(data);
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}
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}
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}
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