Hey all, need help here.
i am making pulse oximetre using AFE4490 and arduino.
Before I implement this to the chip, i use the AFE4490SPO2 evaluation board by adding wires that go to MSP430 and connect it to my arduino. Then i modified the firmware to prevent the communication going to MSP430.
So, i am expecting that, by doing this the communication will go to the arduino, instead of to MSP430.
The modification seems fine, that it is not able to be read by the GUI again (since i'm already blocking it)
and the photodiode sensor still able to brighten up. The blue LED still blinks, and when i measured the voltage on the test point, the voltage seems going through the board. So i see that i am successfully blocking its flow to the MSP430 without shutting down the required power.
however i am still not able to get the SPI reading from the chip. The error aspects might be various, beside of this, but i think it is important for me to ask someone to verifying my code.
What i have changed in the code in the AFE44x0_main.c are the following, i give comments (//) in:
1. Init_Ports(); [line 131]
2. SetVCore (3); [line 132]
3. Init_Clock (); [line 133]
4. Init_TimerA1(); [line 139]
5. then from _enable_interrupt(); [line153] to [line 360], which is the content of while loop that proceeded in the microcontroller is commented. Since, I am expecting the calculation will be done in arduino.
So that's it! Does anyone thinks this changes already fulfilling to how i want it to be? or this changes gives some impacts? Sorry for long and noobies question.
But If someone kindly verified this logic, I am very appreciated it!
Thank you!
Greetings,
Stella
