Could I config WICED_P04 as GPIO with CYW20706?

[LeonH]

I try to run snip.hal.gpio example in WICED Studio 6.1.

When I config WICED_P04 as GPIO and output low, but it always keep high, the voltage only drop to 2.9V.

Could  WICED_P04@ pin config as GPIO?

or it has been locked internally as another function .

[Anonymous]

Yes, there is an issue with using P4 or P24 as a GPIO. P4/P24/BT_CLK_REQ are pin muxed on the same pad and the BT_CLK_REQ is enabled by default which is why you will not be able to use either P4 or P24.

We will try to fix this issue as soon as possible.

[Owen_Zhang123 · Accepted solution]

Hi,

Please add the following code to the init part of your project to disconnect the  internal connection of P24 .

#define cr_pad_fcn_ctl_adr4 0x003201b8

#define REG32(x) (*(volatile unsigned*)(x))

unsigned val = REG32(cr_pad_fcn_ctl_adr4) & ~(0x0000F000);

REG32(cr_pad_fcn_ctl_adr4) = val | (7 << 12);

[LeonH]

Hi yssu,

Thanks for your response.

Hi zhxh,

Yes, it works. I can control P4 pin as GPIO.

Thank you.