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Hi
I want to use your CyUSBSerial SDK to send commands to TI DLP4710EVM-LC. The Cy7c65215 dual channels chip is configured as below by TI
---------------------------------------------------------------------------------
Device Number | VID | PID | INTERFACE NUMBER | FUNCTIONALITY
---------------------------------------------------------------------------------
0 |4b4 |a | 0 | VENDOR_I2C
0 |4b4 |a | 1 | VENDOR_SPI
0 |4b4 |a | 2 | NA
---------------------------------------------------------------------------------
I add a few lines to set GPIO as below
int deviceNum=0;
int interfaceNum=0;
CY_HANDLE s_Handle;
rStatus = CyOpen (deviceNumber, interfaceNum, &s_Handle);
if (rStatus != CY_SUCCESS){
printf ("CY_I2C: Open failed \n");
}
uint8_t Value = 0;
uint8_t gpioNumber =5;
rStatus = CySetGpioValue(s_Handle, gpioNumber, 1);
if (rStatus != CY_SUCCESS) {
printf ("CY:Error in setting GPIO 5 to 1 : Error NO:<%d> \n", rStatus);
}else{
printf("Succeed in setting GPIO 5 to 1 \n");
}
rStatus = CyGetGpioValue(s_Handle, gpioNumber, Value);
if (rStatus != CY_SUCCESS) {
printf ("CY:Error in getting GPIO 5 : Error NO:<%d> \n", rStatus);
}else{
printf ("GPIO value?:<%d> \n", Value);
}
CyLibraryExit ();
free (glDevice);
CyClose (&s_Handle);
I got result as below
CY:Error in setting GPIO 5 to 1 : Error NO:<6>
CY:Error in getting GPIO 5 : Error NO:<6>
Can any one give a help? Thanks!
Derlin
Solved! Go to Solution.
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Hi Derlin,
Can you run USBSerialConfigurationUtility.exe which is in the below path of USB Serial SDK and check if GPIO5 is listed in unused GPIOs section.
C:\Program Files (x86)\Cypress\USB-Serial SDK\bin
You can refer to C:\Program Files (x86)\Cypress\USB-Serial SDK\documentation\Cypress USB-Serial Configuration Utility User Guide.pdf to know where to find the unused GPIO section.
Regards,
Hemanth
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Hi Derlin,
Can you run USBSerialConfigurationUtility.exe which is in the below path of USB Serial SDK and check if GPIO5 is listed in unused GPIOs section.
C:\Program Files (x86)\Cypress\USB-Serial SDK\bin
You can refer to C:\Program Files (x86)\Cypress\USB-Serial SDK\documentation\Cypress USB-Serial Configuration Utility User Guide.pdf to know where to find the unused GPIO section.
Regards,
Hemanth
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Hello Hemanth,
I bought a Cypress DVK board, configured it to I2C and SPI, set GPIO 5 to active 0 and tested it with code above. It did not succeed at the beginning, but then suddenly it works. Don't know why.
Thanks!
Derlin
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Hello,
The GPIOs should be left unused (by the other SCBs) and should be configured as outputs using the USB-Serial configuration utility for the pins to work (drive high or low).
Best Regards,
Yatheesh