topic Re: SPI not works on LPC43S67 in LPC Microcontrollers

SPI not works on LPC43S67

chuyuanchiang — Mon, 28 Aug 2017 07:47:17 GMT

I am using the LC43S67, and try to run the example code periph_ssp on mcuxpresso ide,

after I burn the binary to the target board, I can set the SPI mode and translate method over ttyACM (VCOM),

that works, but there is not signals from SPI clock or MOSI (from J4 in target board).

Do I lost any configure for that?

Thanks,

ChuYuan

Re: SPI not works on LPC43S67

kerryzhou — Thu, 31 Aug 2017 06:57:09 GMT

Hi ChuYuan,

Please tell me what the board you are using, the full name of your board, and the full name of the code which you are using.

Please check the code, what the detail SPI pin in the code, just make sure, the problem is not caused by the wrong spi testing.

As I know, our lpcopen code for SPI works OK, I have test it before.

If you still can't make it work, please give me the detail information.

Have a great day,
Kerry

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Re: SPI not works on LPC43S67

chuyuanchiang — Mon, 04 Sep 2017 07:18:06 GMT

Hi Kerry,

I found the reason, the pin define code is dis-match between lpcopen sample code and lpcxpresso 43S67 board.

this issue is resolved after I get the reference manual from our agents.

Thanks,

ChuYuan

Re: SPI not works on LPC43S67

kerryzhou — Mon, 04 Sep 2017 08:38:39 GMT

Hi ChuYuan,

The lpcopen code is defined like this:

void Board_SSP_Init(LPC_SSP_T *pSSP)
{
   if (pSSP == LPC_SSP1) {
       Chip_SCU_PinMuxSet(0x1, 5, (SCU_PINIO_FAST | SCU_MODE_FUNC5)); /* P1.5 => SSEL1 */
       Chip_SCU_PinMuxSet(0xF, 4, (SCU_PINIO_FAST | SCU_MODE_FUNC0)); /* PF.4 => SCK1 */

       Chip_SCU_PinMuxSet(0x1, 4, (SCU_MODE_INACT | SCU_MODE_INBUFF_EN | SCU_MODE_ZIF_DIS | SCU_MODE_FUNC5)); /* P1.4 => MOSI1 */
       Chip_SCU_PinMuxSet(0x1, 3, (SCU_MODE_INACT | SCU_MODE_INBUFF_EN | SCU_MODE_ZIF_DIS | SCU_MODE_FUNC5)); /* P1.3 => MISO1 */

        Chip_SCU_PinMuxSet(0x3, 1, (SCU_MODE_INACT | SCU_MODE_FUNC4)); /* P1.5 => SSEL1 */
        Chip_GPIO_SetPinDIROutput(LPC_GPIO_PORT, 5, 8);
        Chip_GPIO_SetPinState(LPC_GPIO_PORT, 5, 8, (bool) true);
   }
   else {
       return;
   }
}

So, you need to connect the according pins in the board.

Have a great day,
Kerry

Re: SPI not works on LPC43S67

chuyuanchiang — Mon, 11 Sep 2017 03:22:53 GMT

no, that not works,

I just use this and it works on J4 in my target board

else if (pSSP == LPC_SSP0) {
Chip_SCU_PinMuxSet(0x1, 0, (SCU_PINIO_FAST | SCU_MODE_FUNC5)); /* P1.5 => SSEL1 */
Chip_SCU_PinMuxSet(0x3, 0, (SCU_PINIO_FAST | SCU_MODE_FUNC4)); /* PF.4 => SCK1 */

Chip_SCU_PinMuxSet(0x1, 2, (SCU_MODE_INACT | SCU_MODE_INBUFF_EN | SCU_MODE_ZIF_DIS | SCU_MODE_FUNC5)); /* P1.4 => MOSI1 */
Chip_SCU_PinMuxSet(0x1, 1, (SCU_MODE_INACT | SCU_MODE_INBUFF_EN | SCU_MODE_ZIF_DIS | SCU_MODE_FUNC5)); /* P1.3 => MISO1 */

Chip_SCU_PinMuxSet(0x3, 1, (SCU_MODE_INACT | SCU_MODE_FUNC4)); /* P1.5 => SSEL1 */
Chip_GPIO_SetPinDIROutput(LPC_GPIO_PORT, 5, 8);
Chip_GPIO_SetPinState(LPC_GPIO_PORT, 5, 8, (bool) true);
}

Re: SPI not works on LPC43S67

kerryzhou — Tue, 12 Sep 2017 02:07:23 GMT

Hi ChuYuan Chiang,

I have test the lpcopen ssp code directly on my LPCXpresso43S67 board, it works OK.

1. Board

LPCXpresso43s67, REVB

2.lpcopen code

https://www.nxp.com/downloads/en/software/lpcopen_3_01_keil_iar_nxp_lpcxpresso_4337.zip

3. SSP1 pin

4. Test Result:

I didn't connect the SPI slave, so just MOSI have the data out.

The MOSI works ok on my side.

You modified the code, and you are using the SSP0 now, the lpcopen code are using the SSP1.

Have a great day,
Kerry

Re: SPI not works on LPC43S67

chuyuanchiang — Wed, 13 Sep 2017 02:36:44 GMT

yes, that is my original question, I used spi from J4, Do I lost any configure for that?

but it sees you are lost the target.

all right, by the way, it works now.

Re: SPI not works on LPC43S67

kerryzhou — Wed, 13 Sep 2017 03:25:02 GMT

Hi ChuYuan,

I didn't lost the target, just didn't connect the SPI slave, because your original question is MOSI don't have data, then I just test MOSI wave, it has data out.

If you are using the same board as I, and if you have interest, you also can try J1 interface.

J4 on my side is the USB port. I think your problem maybe caused by the hardware.

Anyway, you already make SPI0 works.

Have a great day,
Kerry