RTOS/TDA2P-ACD: AWR1243 Radar Power On using TDA2Px Failing

Hello Jitendra,

Thank you for your reply! I checked the SPI_HOST_INTR pin at my Serializer end ( given through AR_HOSTINTR1 pin in J1 Connector of AWR1243 Boost schematic) using oscilloscope. It is high under normal condition and during acknowledgement it goes low for a small interval and then goes back to high again after rlDevicePowerOn function call. I am assuming that a low pulse means acknowledgement on the interrupt GPIO pin. If this is correct, the only other possibility seems to be the setting on the fusion board for UB960. In the SDK, in bsputils_ub960,c, the GPIO Setting is done BspUtils_Ub960I2cParams gUb960Cfg_D3AR1243[] .

The original register setting for GPIO in the SDK is given below:

{0x0F, 0xF0, UB960_REG_DELAY_TIME}, /*Disable GPIO 0 ~ 3 input*/ 

{0x14, 0x41, UB960_REG_DELAY_TIME}, /*GPIO 4 - Output received GPIO 2 (HST_INT) from Port 0*/

Could you explain what does Output received GPIO2 mean? I referred the UB960 Datasheet and found it little confusing as well. In my custom board, the SPI Host Interrupt is taken from GPIO1 at the Serializer UB953. So I modified it to the following:

{0x0F, 0xE0, UB960_REG_DELAY_TIME}, /*Disable GPIO 0 ~ 4 input*/  // Based on the datasheet of fusion board, the SPI_HOST_INTR pin is the SYNC_CAMERA signal given to GPIO4 in U1 Deserializer UB960. So I think GPIO4 Should be configured as an output   

{0x14, 0x21, UB960_REG_DELAY_TIME} //Assuming that GPIO 2 in the above means that the GPIO pin taken from the Serializer. So in my case it has to be GPIO1

However, the AsyncEventHandler is still not being invoked at the Host end and the radarInitCompleteFlag is still 0. Is there any other way to debug?

I look forward to your suggestions.

Thank you!

Best Regards,

Nishant

Hello Jitendra,

Few other observations:

1. I tested the SPI_HOST_INTR pin at the fusion board using oscilloscope and I found that this GPIO pin does not go high after the rlDevicePowerOn due to which the radarInitCompleteFlag is still 0 and timeout occurs. However, at the Serializer end this pin does go high after rlDevicePowerOn().

2. I tested my radar sensor AWR1243 with new firmware and ran the mmwavelink_exmaple.sln present in C:\VisionSDKnew\ti_components\radar\mmwave_dfp_01_02_00_00\ti\example\mmwavelink_example, using Visual Studio and observed the SPI_HOST_INTR pin. It goes high after rlDevicePowerOn() function call. The same radar sensor when I connect in FPD-LINK through Fusion Board and TDA2Px EVM doesn't return any ACK signal through SPI_HOST_INTR pin after rlDevicePowerOn(). This means that the error should be in my GPIO Settings or in the SDK implementation using TI-RTOS because it is working fine when I connect to my PC and run with Windows Visual Studio. Could you check the above GPIO Setting and let me know if I need to modify anything?

3. Could you also check my GPIO settings when I do warm reset and reset of my AWR1243?
My hardware connection is as follows: AWR1243 Boost-> SPI-i2c bridge bridge and UB953 Serializer Daughter Board-> FPD Link coax cable-> Fusion Board-> TDA2PX EVM.
The GPIOs in the SPI-I2C Bridge is used for SOP Setting. The four GPIOs from UB953 is used to perform the Warm Reset, NERROR_IN, SPI_HOST_INTR and AR_NRST_MCU.
They are connected as follows:
GPIO0-> WARM Reset
GPIO1-> SPI_HOST_INTR
GPIO2-> NERROR_IN
GPIO3-> AR_NRST_MCU.

I verified the hardware connections and they seem fine.
In the BspUtils_resetAR12xxToSOP4() in bsputils_ub960.c file, where the AWR1243 Warm Reset, NERROR_IN and AR_NRST_MCU is asserted first and then deasserted, I have implemented it the following way:

/*Assert Reset, Nerror in and Warm Reset*/
tempAddr = 0x0D;
tempData = 0x00;
status = Bsp_deviceWrite8(
UB960_ACCESSIBLE_FROM_I2C_INST, //UB960_ACCESSIBLE_FROM_I2C_INST is ((UInt32) 4U)
D3_AR1243_PORT_0_SER_ADDR, //D3_AR1243_PORT_0_SER_ADDR is defined as 0x74U (same as the written in the original code
&tempAddr,
&tempData,
(UInt32) 1U);
BspOsal_sleep(100);

//Performs SOP Settings using the SPI-I2C bridge GPIOS
/*Set SOP Mode 4 by keeping TDO=High, SYNCOUT and PMICOUT=Low*/
tempAddr = 0xF4;
tempData = 0x02;
status = Bsp_deviceWrite8(
UB960_ACCESSIBLE_FROM_I2C_INST,
D3_AR1243_PORT_0_SENSOR_ADDR, //D3_AR1243_PORT_0_SENSOR_ADDR is defined as 0x40U (same as written in the original)
&tempAddr,
&tempData,
(UInt32) 1U);
BspOsal_sleep(100);

/*De-Assert AR_ERROR_IN, Warm_Rst and bringing module out of reset NRST */
tempAddr = 0x0D;
tempData = 0x0F;
status = Bsp_deviceWrite8(
UB960_ACCESSIBLE_FROM_I2C_INST,
D3_AR1243_PORT_0_SER_ADDR,
&tempAddr,
&tempData,
(UInt32) 1U);

Please let me know if you think there is any mistake in the above settings. I look forward to your reply.
Thank you!

Best Regards,
Nishant