GPIOs pins to be set to send command

RE: GPIOs pins to be set to send command

lbe — Thu, 12 Sep 2019 10:43:56 GMT

Of course, I did not consider using NRF_P1->OUT directly 🙂

Your solution is cleaner, thanks for the help!

RE: GPIOs pins to be set to send command

Kenneth — Thu, 12 Sep 2019 09:51:24 GMT

Ah.. or presuming you are using port1 just something like:

#define SENSOR_FIRST_PIN_PORT1 1

void writeCommandPort1(uint8_t value)
{
    uint32_t pin_mask = 0xF << SENSOR_FIRST_PIN_PORT1;
    NRF_P1->OUT = (NRF_P1->OUT & ~pin_mask) | (value << SENSOR_FIRST_PIN_PORT1);  
}

RE: GPIOs pins to be set to send command

lbe — Thu, 12 Sep 2019 09:00:11 GMT

Hello,

this code is part of a pretty large project and I cannot share it.
But I found the reason to the warning: since SENSOR_FIRST_PIN = NRF_GPIO_PIN_MAP(1,1), this means that

the pin_mask is = 33, so the pin_mask value falls out of the possible range for a uint32_t value....

The solution I found is to use the following code

void writeCommandPort(uint8_t value)
{
    uint64_t pin_mask = 0xFLL << SENSOR_FIRST_PIN;
    NRF_GPIO->OUT = (NRF_GPIO->OUT & ~pin_mask) | ((uint64_t)value << SENSOR_FIRST_PIN);  
}


//Where SENSOR_FIRST_PIN = NRF_GPIO_PIN_MAP(1,1)

Essentially, I used 64 bits value for the mask, since the pins I am going to modify are > 32.

I still need to test it, so I would appreciate any feedback if you think there is something wrong with this solution,

Thanks

RE: GPIOs pins to be set to send command

Kenneth — Wed, 11 Sep 2019 16:18:35 GMT

Tried your code, but couldn't get the warning. Maybe you can share a small SES project + main.c I can run on a nRF52840?

Kenneth