RE: How to find out nRF52 chip revision

OJ — Mon, 21 Jan 2019 12:38:36 GMT

Yes, thank you very much 🙂

RE: How to find out nRF52 chip revision

wpaul — Thu, 17 Jan 2019 17:37:47 GMT

There is a set of FICR registers which indicate the manufacturing info for the device, which you can print out in your application. I use code like this:

info = NRF_FICR->INFO.VARIANT;
p = (uint8_t *)&info;
printf ("Nordic Semiconductor nRF%x Variant: %c%c%c%c ",
NRF_FICR->INFO.PART, p[3], p[2], p[1], p[0]);
printf ("RAM: %dKB Flash: %dKB\r\n", NRF_FICR->INFO.RAM,
NRF_FICR->INFO.FLASH);
printf ("Device ID: %x%x\r\n", NRF_FICR->DEVICEID[0],
NRF_FICR->DEVICEID[1]);

The NRF_FICR.INFO registers are defined in the SDK headers like this:

/**
* @brief FICR_INFO [INFO] (Device info)
*/
typedef struct {
__IM uint32_t PART; /*!< (@ 0x00000000) Part code */
__IM uint32_t VARIANT; /*!< (@ 0x00000004) Build code (hardware version and production configuration) */
__IM uint32_t PACKAGE; /*!< (@ 0x00000008) Package option */
__IM uint32_t RAM; /*!< (@ 0x0000000C) RAM variant */
__IM uint32_t FLASH; /*!< (@ 0x00000010) Flash variant */
__IOM uint32_t UNUSED8[3]; /*!< (@ 0x00000014) Unspecified */
} FICR_INFO_Type; /*

They should also be documented in the various nRF52 product specification documents.

Does that help?