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Refactor i2cSlaveCallback().

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This commit is contained in:
László Monda
2017-10-01 21:38:02 +02:00
parent 42e17ca1bf
commit 0ba979a658
1 changed files with 12 additions and 11 deletions
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23
left/src/init_peripherals.c
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@@ -16,17 +16,6 @@ i2c_slave_transfer_event_t prevEvent;
static void i2cSlaveCallback(I2C_Type *base, i2c_slave_transfer_t *xfer, void *userData) static void i2cSlaveCallback(I2C_Type *base, i2c_slave_transfer_t *xfer, void *userData)
{ {
if (prevEvent != kI2C_SlaveReceiveEvent && xfer->event == kI2C_SlaveReceiveEvent) {
rxMessagePos = 0;
memset(&RxMessage, 0, I2C_BUFFER_MAX_LENGTH);
} else if (prevEvent == kI2C_SlaveReceiveEvent && xfer->event == kI2C_SlaveCompletionEvent) {
((uint8_t*)&RxMessage)[rxMessagePos] = byteIn;
RxMessage.length = rxMessagePos-3;
SlaveRxHandler();
} else if (prevEvent == kI2C_SlaveReceiveEvent && xfer->event == kI2C_SlaveReceiveEvent) {
((uint8_t*)&RxMessage)[rxMessagePos++] = byteIn;
}
switch (xfer->event) { switch (xfer->event) {
case kI2C_SlaveTransmitEvent: case kI2C_SlaveTransmitEvent:
SlaveTxHandler(); SlaveTxHandler();
@@ -34,10 +23,22 @@ static void i2cSlaveCallback(I2C_Type *base, i2c_slave_transfer_t *xfer, void *u
xfer->dataSize = TxMessage.length+3; xfer->dataSize = TxMessage.length+3;
break; break;
case kI2C_SlaveReceiveEvent: case kI2C_SlaveReceiveEvent:
if (prevEvent == kI2C_SlaveReceiveEvent) {
((uint8_t*)&RxMessage)[rxMessagePos++] = byteIn;
} else {
rxMessagePos = 0;
memset(&RxMessage, 0, I2C_BUFFER_MAX_LENGTH);
}
xfer->data = (uint8_t*)&byteIn; xfer->data = (uint8_t*)&byteIn;
xfer->dataSize = 1; xfer->dataSize = 1;
break; break;
case kI2C_SlaveCompletionEvent: case kI2C_SlaveCompletionEvent:
if (prevEvent == kI2C_SlaveReceiveEvent) {
((uint8_t*)&RxMessage)[rxMessagePos] = byteIn;
RxMessage.length = rxMessagePos-3;
SlaveRxHandler();
}
break; break;
default: default:
break; break;