Other Parts Discussed in Thread: MSP-FET,
Tool/software: Code Composer Studio
Hi there,
I want to set the VDD2X bit of RF430FRL152H high so I was trying to write firmware to the chip.
I tried to connect RF430FRL152H to MSP-FET with L092 active cable with the same connection as the related post.
| L092 |
<-> |
RF430FRL152H |
|
1 TDO |
<-> | 20 P1.6 |
|
2 VCCULV |
<-> |
3 VDDSW |
|
3 TDI |
<-> |
21 P1.5 |
|
4 GND |
<-> | 25 GND |
|
5 TMS |
<-> | 19 P1.7 |
|
6 OPEN |
<-> | OPEN |
|
7 TCK |
<-> | 22 P1.4 |
|
8 THOLD |
<-> | OPEN |
|
9 GND |
<-> | 25 GND |
| 10 RST | <-> | 10 RST |
At first I powered up the tag using MSPFET so both JP2-1 and JP2-2 were closed. And I got the same result that VDDSW was around 2V.
So I follow the suggestion supplied the tag with 1.5V externally at VDDSW and VCCULV. JP2-1 was left open while JP2-2 was closed.
However, I still got the same error: "Unknown Device" when debugging at CCS.
All the decoupling capacitors were used as suggested.
I have also tried the connection by building a level shifter duplicated from the RF430FRL152HEVM.
The tag was also supplied at VDDSW with 1.5V externally. But I have got the same error: Unknown device.
I doubted the tag wasn't working properly but it was fine when I tried to read it using an NFC reader.
Is there any solution or anything I can test to see what is happening?
For both cases, VDD2X was measured with around 2.5V initially then dropped rapidly and stayed constant to 1.3V.
Is this normal? Since I have measured the voltage at VDD2X before when using an NFC reader.
The voltage level at VDD2X kept went up and down between 1.3V and 2.7V and I assumed this is normal as the VDD2X bit isn't on.
