[UBLOX_EVK_ODIN_W2] SPI failing

[andrewc-arm]

Note: This is just a template, so feel free to use/remove the unnecessary things

Description

• Type: Bug
• Priority: Blocker

---

Bug

Target
UBLOX_EVK_ODIN_W2

Toolchain:
GCC_ARM

Toolchain version:
5.4.1 20160919

mbed-cli version:
1.2.0

mbed-os sha:
(git log -n1 --oneline)
mbed-os-5.6.0
5499db1 Merge pull request #5178 from ARMmbed/release-candidate

Expected behavior
UBLOX_EVK_ODIN_W2's SPI should perform same as K64F's SPI.

Actual behavior
UBLOX_EVK_ODIN_W2 does not return the same value as K64F.

Steps to reproduce

• Have SPI component like LSM9DS0.
• Connect SPI pins.
• Run who_am_i check program like below.

#include "mbed.h"

//set up spi
//MOSI is PTC6
//MISO is PTC7
//SCLK is PTC5
//gyro chip select is PTC0
SPI spi(D11, D12, D13);		// andrewc
DigitalOut gyroCSPin(D5);	// andrewc

int main() {
	gyroCSPin = 1;

//SPI Mode is 0
	spi.format(8, 0);
	spi.frequency(80000);

	for (int i = 0; i < 0x100; i++)
	{
		printf("Trying for %d\n", i);
//Code steps:
//A) Test if we're connected with the gyroscope
//	i) Read the "who am I" register (address code: 143) and check if gyroscope responds (the id register value should be 212).
	gyroCSPin = 0;
	spi.write(i);
	int who_am_i_value = spi.write(0);
	wait_us(3);
	gyroCSPin = 1;

	if (who_am_i_value != 0xFF) {
		printf("Gyroscope is working! val = %d\n", who_am_i_value);
	} else {
		printf("Gyroscope is not working! val = %d\n", who_am_i_value);
	}
	}
}

Hi, @andreaslarssonublox and @andreaspeterssonublox

Could you please give me an advice how to enable SPI from UBLOX_EVK_ODIN_W2?
Do you have working example code with UBLOX_EVK_ODIN_W2?
Somehow, SPI does not seems to work well like other EVK such as K64F.

Thanks,

[andrewc-arm]

Hi,

I heard from others that SPI is bound to SD-card in the UBLOX_EVK_ODIN_W2 board. And it is affecting this result.
Do you know how I can bypass this physical bounding?

Thanks,

[andrewc-arm]

Sorry. It must have been my setting issue. Please ignore my comment.

With this code it works.

#include "mbed.h"

//set up spi
//MOSI is PTC6
//MISO is PTC7
//SCLK is PTC5
//gyro chip select is PTC0
SPI spi(D11, D12, D13);		// andrewc
DigitalOut gyroCSPin(D5);	// andrewc
DigitalOut ledG(LED_GREEN);	// andrewc

int main() {
	gyroCSPin = 1;
	ledG = 1;

//SPI Mode is 0
	spi.format(8, 0);
	spi.frequency(8000000);

	for (;;)
	{
//Code steps:
//A) Test if we're connected with the gyroscope
//	i) Read the "who am I" register (address code: 143) and check if gyroscope responds (the id register value should be 212).
	gyroCSPin = 0;
	spi.write(143);
	int who_am_i_value = spi.write(0);
	wait_us(3);
	gyroCSPin = 1;

	if (who_am_i_value != 0xFF) {
		printf("Gyroscope is working! val = %d\n", who_am_i_value);
		ledG = 0;
		wait(1);
	} else {
		printf("Gyroscope is not working! val = %d\n", who_am_i_value);
	}

	ledG = 1;
	wait(1);
	}

//B) Initialize the gyroscope
//	1) Write the 1st Gyroscope Control Register (address code: 32) to 15:
//		- sets the sampling rate to 95 samples per second
//			- enables all axes to be read.
//			- turns on the gyroscope
//	2) Write the 4th Gyroscope Control Register (address code: 35) to 16:
//		- sets the sensitivity range to +/-500 degrees per second

//C) Read data from the gyroscope
//	3) Read 2 bytes of angular velocity data around the X axis (address code: 232):
//	4) Read 2 bytes of angular velocity data around the Y axis (address code: 234):
//	5) Read 2 bytes of angular velocity data around the Z axis (address code: 236):
}