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Hi:
when I read the CYW20735 datasheet. I find some GPIOs are not assigned to detail Px, as we know, CYW20735 have 40 gpios which we can use.
so I want to know the UART_CTS_N UART_RTS_N UART_TXD UART_RXD SPI_MISO SPI_MOSI SPI_CSN SPI_CLK ,these special functions IOs are corresponding to Px , if these gpios can use another functions ,for example if the UART_CTS_N can use general GPIO, I can use HCI uart function to download firmware if I assign the UART_CTS_N as a generel gpio. now we use the third party CYW20735 module to develop bluetooth mesh devices ,and the number of IO pins of the CYW20735 modules is too small . so we have to use the HCI uart IOs as a general IOs ,however I want to know if I have configued these HCI uart IOs to another function and I can't download the program by the gpios.
I wan to know if these special GPIOs functions have been configued as corresponding functions in the bootloader, the user can't use these GPIOs as other function!
thanks!
mandy
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Hi Mandy,
HCI UART pins are not recommended to use as normal GPIO pins.
It will effect the BT application functionalities as well as programming of chip.
Thanks,
Anjana
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Hi Mandy,
HCI UART pins are not recommended to use as normal GPIO pins.
It will effect the BT application functionalities as well as programming of chip.
Thanks,
Anjana
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Hi AnjanaM_61:
thanks! I got it!