Tool/software:
Hello,
As noted in this thread (https://e2e.ti.com/support/sensors-group/sensors/f/sensors-forum/1491145/boostxl-tuss4470-gui-settings-configuration/5755069?tisearch=e2e-sitesearch&keymatch=SEMYALO#), we successfully developed the custom code to run on the STM32WB09 Nucelo board. It worked well through all the tests we did.
These are the settings that worked well at an spi frequency of 1 MHz.
TUSS4470_Write_Register(TI_TUSS4470_BPF_CONFIG_1_REG, 0x7F);
TUSS4470_Write_Register(TI_TUSS4470_BPF_CONFIG_2_REG, 0x10);
TUSS4470_Write_Register(TI_TUSS4470_DEV_CTRL_1_REG, 0xB7);
TUSS4470_Write_Register(TI_TUSS4470_DEV_CTRL_2_REG, 0xC1);
TUSS4470_Write_Register(TI_TUSS4470_DEV_CTRL_3_REG, 0x00);
TUSS4470_Write_Register(TI_TUSS4470_VDRV_CTRL_REG, 0x00);
TUSS4470_Write_Register(TI_TUSS4470_ECHO_INT_CONFIG_REG, 0x1C);
TUSS4470_Write_Register(TI_TUSS4470_ZC_CONFIG_REG, 0x14);
TUSS4470_Write_Register(TI_TUSS4470_BURST_PULSE_REG, 0x10);
TUSS4470_Write_Register(TI_TUSS4470_TOF_CONFIG_REG, 0x00);
So, we moved to the next step of developing our custom board. Running the same program on the custom board, we were not able to either read or write to the registers
We have done several checks:
- The STM32 Chip is well powered since it is able to run BLE radio on the same custom board. We disconnected BLE to check if it is interfering with the spi but that did not help.
- We checked the Vpower, VDRV voltage, on the TUSS4470 chip but they all seem to be fine. Vpower is 5V and VDRV is about 4.6V, these are the same values we observed on the TUSS4470 + the STM development board
- We did continuity tests for the spi lines (CS, MOSI, MISO, SCLK) between the st chip and TUSS4470 chip, and they show that they are connected.
- We checked the MISO and MOSI lines and it is ecident that we cannot read/write from the TUSS registers.
MISO LINE OF EVEM (BLUE), YELLOW IS CLOCK
MISO LINE OF CUSTOM BOARD (BLUE), YELLOW IS CLOCK
So, what could be causing this behaviour!! As I noted earlier, the continuity tests show that the spi lines are connected well between the stm32chip and the TUSS4470 and the tests show both chips are powered to the required volatges. Thanks for your response!
