Hi,
I have layout a borad with nRF52810 and use IO to control other ICs.IOs map as blow.
#define LSM_6DS_SPI_CLK_PIN 9 /**< SPI */
#define LSM_6DS_SPI_CS_PIN 4
#define LSM_6DS_SPI_MI_PIN 5
#define LSM_6DS_SPI_MO_PIN 6
#define LED_2_PIN 18
#define LED_3_PIN 20
#define EN_MOVE_PIN 25
#define EN_SHAKE_PIN 10
#define CTRL1_PIN 12 //Red
#define CTRL2_PIN 14 //Black
My software frame:
/************************/
main()
{
platform_gpio_initialize();
softdevice_init();
while(1)
{
mycode();
}
}
/************************/
Here is the platform_gpio_initialize() code
void platform_gpio_initialize()
{
/** @brief initialize sensor PIN */
nrf_gpio_cfg_output(LSM_6DS_SPI_CS_PIN);
nrf_gpio_cfg_output(LSM_6DS_SPI_MO_PIN);
nrf_gpio_cfg_output(LSM_6DS_SPI_CLK_PIN);
nrf_gpio_cfg_input(LSM_6DS_SPI_MI_PIN, NRF_GPIO_PIN_PULLUP);
nrf_gpio_pin_set(LSM_6DS_SPI_CS_PIN);
nrf_gpio_pin_set(LSM_6DS_SPI_CLK_PIN);
nrf_gpio_pin_clear(LSM_6DS_SPI_MO_PIN);
/** @brief initialize spi flash PIN */
/** @brief initialize led pin */
nrf_gpio_cfg_output(LED_2_PIN);
nrf_gpio_pin_set(LED_2_PIN);
nrf_gpio_cfg_output(LED_3_PIN);
nrf_gpio_pin_set(LED_3_PIN);
nrf_gpio_cfg_output(EN_MOVE_PIN);
nrf_gpio_pin_clear(EN_MOVE_PIN);
nrf_gpio_cfg_output(EN_SHAKE_PIN);
nrf_gpio_pin_clear(EN_SHAKE_PIN);
nrf_gpio_cfg_output(CTRL1_PIN);
nrf_gpio_pin_clear(CTRL1_PIN);
nrf_gpio_cfg_output(CTRL2_PIN);
nrf_gpio_pin_clear(CTRL2_PIN);
nrf_delay_ms(20);
for(int i=0;i<7;i++)
{
nrf_gpio_pin_set(EN_MOVE_PIN);
nrf_delay_ms(20);
nrf_gpio_pin_clear(EN_MOVE_PIN);
nrf_delay_us(20);
}
nrf_gpio_pin_set(EN_MOVE_PIN);
}
After download this code,the bluetooth advertising and connection are working normally.
LED_2_PIN LED_3_PIN EN_SHAKE_PIN cotrolling are working normally, but the voltage of CTRL2_PIN is always high (Voltage=1.6V)although I had clear this PIN in platform_gpio_initialize().But if I add nrf_gpio_pin_clear(CTRL2_PIN) in main while(1), the voltage of CTRL2_PIN is 0V.
So I don't know where is changing the CTRL2_PIN VOLTAGE.
