topic Re: ecspi about Status Register = 0x18 in i.MX Processors

ecspi about Status Register = 0x18

laufei — Wed, 08 Oct 2014 08:47:34 GMT

Hello, Freescale

I am doing the debug of ecspi with touch-tsc2008.

I met a issue about I can't receive the data from RXDATA, whie I saw the data from the capture signal according to the following picture.

Can you help me check the configure for why I can't get the data from RXDATA?

the spi configure:

spiTs2008Attach: devFreq=2000000, mode=0, bitWidth=8

imxEcspiTransfer: txLen[1] rxLen[1] mode[0x0]

imxEcspiTransfer: cs=0, transLen=0x2, tx=0x1, rx=0x1, align=1

ctrlFreq=0x3938700, devFreq=0x1e8480, pre=0xe, post=0x1, freq=0x1e8480

imxEcspiChanCfg: confreg=0x70e1f1, configreg=0x100, ctrlFreq=60000000, spiFreq=2000000, curFreq=2000000

imxEcspiChanCfg OK

imxEcspiIsr: statreg=0x3

Tx: 0xd8

Tx: 0x0

imxEcspiIsr: statreg=0x18

omit rx-raw: 0x0

Rx: 0x0

imxEcspiIntTrans: done transfer

Thank you for your support!

Best Regards

igorpadykov — Thu, 09 Oct 2014 00:55:00 GMT

Hi fe la

please try SDK spi example and iMX6_Firmware_Guide.pdf

has good explanation in Chapter 6 Configuring the eCSPI Driver

Best regards

igor

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laufei — Thu, 09 Oct 2014 07:09:50 GMT

Thank you for your support!

I have fixed this issue, which is caused by the IOMUX - "IOMUXC_ECSPI2_MISO_SELECT_INPUT" choose the wrong way.

I use the ecspi2 on the dual-lite, which is different from dual and quad chip.

Best Regards

Fe la