Hi
How to set the vdd level to 3.3v when the system is in the High Voltage mode?I can't fine any api about setting vdd level in document.
Hi
How to set the vdd level to 3.3v when the system is in the High Voltage mode?I can't fine any api about setting vdd level in document.
Hi
You can do something similar to the gpio_output_voltage_setup() function in boards.c as part of your main application, and that should set the GPIO output voltage to 3.0V.
/** * Function for configuring UICR_REGOUT0 register * to set GPIO output voltage to 3.0V. */ static void gpio_output_voltage_setup(void) { // Configure UICR_REGOUT0 register only if it is set to default value. if ((NRF_UICR->REGOUT0 & UICR_REGOUT0_VOUT_Msk) == (UICR_REGOUT0_VOUT_DEFAULT << UICR_REGOUT0_VOUT_Pos)) { NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Wen; while (NRF_NVMC->READY == NVMC_READY_READY_Busy){} NRF_UICR->REGOUT0 = (NRF_UICR->REGOUT0 & ~((uint32_t)UICR_REGOUT0_VOUT_Msk)) | (UICR_REGOUT0_VOUT_3V0 << UICR_REGOUT0_VOUT_Pos); NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Ren; while (NRF_NVMC->READY == NVMC_READY_READY_Busy){} // System reset is needed to update UICR registers. NVIC_SystemReset(); } }
Best regards,
Simon
Hi
You can do something similar to the gpio_output_voltage_setup() function in boards.c as part of your main application, and that should set the GPIO output voltage to 3.0V.
/** * Function for configuring UICR_REGOUT0 register * to set GPIO output voltage to 3.0V. */ static void gpio_output_voltage_setup(void) { // Configure UICR_REGOUT0 register only if it is set to default value. if ((NRF_UICR->REGOUT0 & UICR_REGOUT0_VOUT_Msk) == (UICR_REGOUT0_VOUT_DEFAULT << UICR_REGOUT0_VOUT_Pos)) { NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Wen; while (NRF_NVMC->READY == NVMC_READY_READY_Busy){} NRF_UICR->REGOUT0 = (NRF_UICR->REGOUT0 & ~((uint32_t)UICR_REGOUT0_VOUT_Msk)) | (UICR_REGOUT0_VOUT_3V0 << UICR_REGOUT0_VOUT_Pos); NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Ren; while (NRF_NVMC->READY == NVMC_READY_READY_Busy){} // System reset is needed to update UICR registers. NVIC_SystemReset(); } }
Best regards,
Simon