?? i2c.ini
字號(hào):
DEFINE unsigned int SADR // Slave Address
MAP 0x30000,0x300FF READ WRITE
signal void I2CMEMORY (void) {
unsigned long adr;
SADR = 0x20; // I2C Memory Slave Address
adr = 0x30000;
while (1) {
wwatch (I2C_OUT); // Wait for data from Microcontroller
while (I2C_OUT == 0x0100) { // START detected
wwatch (I2C_OUT); // Wait for data from Microcontroller
if (I2C_OUT > 0xFF) continue;
if ((I2C_OUT >> 1) != SADR) continue; // test if Slave is addressed
I2C_IN = 0xFF00; // ACK to Microcontroller
if (I2C_OUT & 1) { // Slave Read
while (1) {
I2C_IN = _RBYTE(adr); // Read Byte from Memory
printf ("Addr %2.2X\n", (unsigned) adr);
adr++; // Increment Address
wwatch (I2C_OUT); // Wait for ACK from Microcontroller
if (I2C_OUT != 0xFF00) break;
}
}
else { // Slave Write
wwatch (I2C_OUT); // Wait for data from Microcontroller
if (I2C_OUT > 0xFF) continue;
adr = I2C_OUT | 0x30000 ; // Set Memory Address
printf ("Addr %2.2X\n", (unsigned) I2C_OUT);
I2C_IN = 0xFF00; // ACK to Microcontroller
while (1) {
wwatch (I2C_OUT); // Wait for data from Microcontroller
if (I2C_OUT > 0xFF) break;
_WBYTE (adr, I2C_OUT); // Store Byte in Memory
adr++; // Increment Address
I2C_IN = 0xFF00; // ACK to Microcontroller
}
}
}
}
}
I2CMEMORY();
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