MSP430G2533: SPI clock problem

rafael flores

Part Number: MSP430G2533
Other Parts Discussed in Thread: MSP430G2553, LDC1101

Hi, I trying to program the LDC1101 from ti and acording to the datasheet I need 16bit clock for write and read, is there any way that MSP430G2553 SPI module can do that?

from datasheet "If the numberof SCLK pulses is less than16, a register write command does not change the contents of the addressed register."

over 4 years ago

0 Bruce McKenney47378 over 4 years ago

Guru 88460 points

Just write two bytes (with CSB held low) and the device will see 16 SCKs. You'll need to use UCMODE_0 (3-pin) and wiggle CSB yourself as a GPIO.

0 rafael flores over 4 years ago in reply to Bruce McKenney47378

Intellectual 270 points

that is what i`m doing for writing and for reading just send a dummy byte after de adress byte for keep the clock, but still doesnt work

0 Bruce McKenney47378 over 4 years ago in reply to rafael flores

Guru 88460 points

What result do you get? I.e., how do you know it doesn't work?

If you can show us your code, maybe someone will see something.

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MSP430G2533: SPI clock problem