[FAQ] EVMK2G: How to run UART Examples for DSP core on K2G EVM

To run the UART example for K2G devices make sure the prerequisites are present.

1. Install CCS (https://www.ti.com/tool/download/CCSTUDIO/9.3.0.00012),
2. TI RTOS SDK
   1. For K2G: Install PROCESSOR-SDK-RTOS-K2G  (Version: 06_03_00_106, https://software-dl.ti.com/processor-sdk-linux/esd/K2G/latest/index_FDS.html ),
3. Generate the Example projects for PDK,
   1. For K2G: https://e2e.ti.com/support/processors-group/processors/f/791/t/1135633.

Now, Import the CCS project into CCS and go on

1. To Import the project goto File -> Import -> "CCS projects" in "C/C++" -> Browse "Select Search-directory". make sure to uncheck the "Copy Projects into Workspace" (This is to avoid compilation errors only If TI-RTOS SDK was installed in a different location than "C:\ti\").

   1. we have the following DSP example projects

      1. UART_BasicExample_K2G_c66xDMATestProject,

      2. UART_BasicExample_K2G_c66xExampleProject,

      3. UART_BasicExample_K2G_c66xTestProject.

   2. we have the following ARM example projects

      1. UART_BasicExample_K2G_armDMATestProject,

      2. UART_BasicExample_K2G_armExampleProject,

      3. UART_BasicExample_K2G_armTestProject.

   3. Do not open ARM and DSP examples at the same time, CCS will throw project out-of-sync error dialog.

2. For Hardware connections,

   1. we can connect through Mini USB connecting through J1 (Other mini USB port (J3) used by Onboard Debug Emulator).

   2. There will be two mini USB ports available for UART in the "Device Manager" section in "Windows OS" (CP2105 chipset, refer to device manager image for reference)

      1. The Port with the lowest number is the UART port.

      2. The Port with the highest number is BMC port.

   3. UART configuration used in these projects were "8N1"(Data Bit = 8, Parity = None and Stop bit = 1) and baud rate "115200".

   4. To create a Target configuration for "EVMK2G" kindly refer to the URL https://e2e.ti.com/support/processors-group/processors/f/791/t/1135633

   5. No Boot switch settings are,

      SW3[4:1]	BOOT MODE
      0000 (0x0)	Sleep/No Boot
      0001 (0x1)	PCIe boot
      0010 (0x2)	Ethernet Boot
      0011 (0x3)	I2C PLL Boot
      0100 (0x4)	SPI No PLL Boot
      0101 (0x5)	SPI PLL-1 Boot
      0110 (0x6)	USB Boot
      0111 (0x7)	MMC/SD Boot
      1000 (0x8)	UART Boot
      1001 (0x9)	QSPI 96 Boot
      1010 (0xa)	eMMC Boot
      1011 (0xb)	NAND Boot
      1100 (0xc)	I2C No PLL Boot
      1101 (0xd)	SPI PLL-2 Boot
      1110 (0xe)	SPI PLL-3 Boot
      1111 (0xf)	QSPI 48 Boot

   6. 

   7. Hardware connection details are explained on this page https://software-dl.ti.com/processor-sdk-linux/esd/docs/06_03_00_106/linux/How_to_Guides/Hardware_Setup_with_CCS/66AK2G02_GP_EVM_Hardware_Setup.html

3. To Build the project, Right click on the project and select "Rebuild project". Check for compilation errors and look for "Compilation finished successfully".

4. 

5. DSP UART Projects

   1. "UART_BasicExample_K2G_c66xExampleProject" prints 16 character string terminated by return ("Enter")

   2. UART_BasicExample_K2G_c66xTestProject runs 21 test cases, if a test case is failed it exits the program.

   3. UART_BasicExample_K2G_c66xTestProject runs the 21 DMA test cases,  if a test case is failed it exits the program. 

6. Kindly refer to the video demo,

7. For Documentation, Code reference, usage, and other UART driver definitions, Kindly open the web pages (using any browser) which come with the TI-RTOS SDK

   1. Driver APIs: "{TI_RTOS_K2G_INSTALLATION}/pdk_k2g_4_0_16/packages/ti/drv/uart/docs/doxygen/html/files.html"

   2. CSL APIs: "{TI_RTOS_K2G_INSTALLATION}/pdk_k2g_4_0_16/packages/ti/csl/docs/doxygen/html/group___c_s_l___u_a_r_t.html"

Thanks & regards,

Rajarajan U