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Make sure to send no more than LED_DRIVER_LED_COUNT LED values to the LED driver IC even if LED_DRIVER_LED_COUNT is not an exact multiple of PMW_REGISTER_UPDATE_CHUNK_SIZE.

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László Monda
2017-08-10 15:07:03 +02:00
parent f9583eb4f4
commit 31b01864eb
1 changed files with 4 additions and 3 deletions
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7
right/src/slave_drivers/is31fl3731_driver.c
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@@ -96,9 +96,10 @@ void LedSlaveDriver_Update(uint8_t ledDriverId) {
break;
case LedDriverPhase_InitLedValues:
updatePwmRegistersBuffer[0] = FRAME_REGISTER_PWM_FIRST + *ledIndex;
memcpy(updatePwmRegistersBuffer+1, currentLedDriverState->sourceLedValues + *ledIndex, PMW_REGISTER_UPDATE_CHUNK_SIZE);
I2cAsyncWrite(ledDriverAddress, updatePwmRegistersBuffer, PWM_REGISTER_BUFFER_LENGTH);
*ledIndex += PMW_REGISTER_UPDATE_CHUNK_SIZE;
uint8_t chunkSize = MIN(LED_DRIVER_LED_COUNT - *ledIndex, PMW_REGISTER_UPDATE_CHUNK_SIZE);
memcpy(updatePwmRegistersBuffer+1, currentLedDriverState->sourceLedValues + *ledIndex, chunkSize);
I2cAsyncWrite(ledDriverAddress, updatePwmRegistersBuffer, chunkSize + 1);
*ledIndex += chunkSize;
if (*ledIndex >= LED_DRIVER_LED_COUNT) {
*ledIndex = 0;
memcpy(currentLedDriverState->targetLedValues, currentLedDriverState->sourceLedValues, LED_DRIVER_LED_COUNT);