HSPI is not working above Board Manager 2.0.3

[iharshadec]

Hi,

Windows 11
Arduino 1.8.19
Chip ESP32-PICO-D4

I was using ICM-20948 with SPI interface on HSPI on ESP32-PICO-D4 chipset. Till now I was on ESP version 1.0.6 and as now I wanted to upgrade the board manager I realize that after 2.0.3 HSPI is not working as code compiles fine but execution is halted after begin.

here is my initialization

SPIClass hspi;
ICM_20948_SPI ICM; // If using SPI create an ICM_20948_SPI object
hspi = SPIClass(HSPI);
hspi.begin(14 /* SCK /, 12 / MISO /, 13 / MOSI /, 25/ SS */);
ICM.begin(ICM_CS_PIN, hspi);

ICM.begin calles the code given bellow.

Here is the ICM library code and it never goes after

_spi->beginTransaction(_spisettings);
_spi->transfer(0x00);
_spi->endTransaction();

ICM_20948_Status_e ICM_20948_SPI::begin(uint8_t csPin, SPIClass& spiPort, uint32_t SPIFreq)
{
	if (SPIFreq > 7000000)
		SPIFreq = 7000000;

	// Associate
	_spi = &spiPort;
	_spisettings = SPISettings(SPIFreq, ICM_20948_SPI_DEFAULT_ORDER, ICM_20948_SPI_DEFAULT_MODE);
	_cs = csPin;

	// Set pinmodes
	pinMode(_cs, OUTPUT);

	// Set pins to default positions
	digitalWrite(_cs, HIGH);

	// _spi->begin(); // Moved into user's sketch
	// 'Kickstart' the SPI hardware.
	_spi->beginTransaction(_spisettings);
	_spi->transfer(0x00);
	_spi->endTransaction();
	
	Serial.println("This Never Prints");

	// Set up the serif
	_serif.write = ICM_20948_write_SPI;
	_serif.read = ICM_20948_read_SPI;
	_serif.user = (void*)this; // refer to yourself in the user field

	// Link the serif
	_device._serif = &_serif;

	// Perform default startup
	status = startupDefault();
	if (status != ICM_20948_Stat_Ok)
	{
		return status;
	}

	return ICM_20948_Stat_Ok;
}

Is there any workaround to get HSPI working as I already have SD Card on VSPI?

[mrengineer7777]

I'm using VSPI and HSPI with Arduino Core 2.0.7 with no issue.

#include "SPI.h"                 //Creates "SPI" object
#define SPI3              SPI    //Alias to make it easier to keep track of SPI ports.  This is actually in my header file.

SPIClass SPI2(HSPI);                                                                //Create SPI2 object

    SPI2.begin( 14,              //SPI2 clk
                34,              //SPI2 input unused
                13,
                -1);             //CS unused

    SPI3.begin( 18,              //SPI3 clk. Custom hardware!
                35,              //SPI3 input unused
                23,
                -1);             //CS unused

 SPI3.beginTransaction(SPISettings(8000000, 1, 0));
        SPI3.transfer(_canvas[i + offset_row_D]);
        SPI3.transfer(_canvas[i + offset_row_C]);
        SPI3.transfer(_canvas[i + offset_row_B]);
        SPI3.transfer(_canvas[i]);
  SPI3.endTransaction();

I think I read somewhere that only one SPI port can use nCS. Hope this helps!

[me-no-dev]

Never name SPI objects in ESP32-Arduino as SPIx, because those do exist as pointer to the bus registers for at least some of the chips.

[mrengineer7777]

Good to know! I will change my code to _SPI2, _SPI3.

[iharshadec]

Here as @me-no-dev said I am not using SPIx as I have
hspi = SPIClass(HSPI);
But only difference now is I am passing nCS pin when I init SPI with here
hspi.begin(14 /* SCK /, 12 / MISO /, 13 / MOSI /, 25/ SS */);

So Now let me put -1 and try with latest 2.0.14 version then?

[mrengineer7777]

I look forward to hearing the result

[iharshadec]

I have updated to 2.0.7 as well as 2.0.11 and 2.0.14 but it's not working.
Here is code attached. It Compiles fine with each verison but works only with 2.0.3
ESP_ICM_HSPI.zip

[iharshadec]

Got it working

from this code

SPIClass hspi;
ICM_20948_SPI ICM; // If using SPI create an ICM_20948_SPI object
hspi = SPIClass(HSPI);
hspi.begin(14 /* SCK /, 12 / MISO /, 13 / MOSI /, 25/ SS */);
ICM.begin(ICM_CS_PIN, hspi);

I removed
hspi = SPIClass(HSPI);

and it worked.