SF32LB52 HXT48 trim

Crystal load capacitance trim from the factory configuration in the flash OTP area. More...

Data Structures
struct	pbl_sf32lb52_hxt
	Crystal trim device. More...

Macros
#define	PBL_SF32LB52_HXT_DEFINE(sym, _name, _flash, ...)
	Define the crystal trim device.

Detailed Description

Crystal load capacitance trim from the factory configuration in the flash OTP area.

The SoC factory configuration is a list of records (one byte id, one byte length, data) in OTP cells the board names. The first crystal record found is applied to the 48 MHz crystal oscillator once the flash is up, before the radio core starts:

PBL_SF32LB52_HXT_DEFINE(s_hxt, "hxt", &s_flash.flash, "soc-config-user", "soc-config-cust");

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Data Structure Documentation

pbl_sf32lb52_hxt

struct pbl_sf32lb52_hxt

Crystal trim device.

Data Fields
const char *const *	cells	Names of the OTP cells holding it, in search order.
struct pbl_device	dev	Device, a child of the flash.
const struct pbl_flash *	flash	Flash holding the factory configuration.
uint8_t	num_cells	Number of cells.

Macro Definition Documentation

PBL_SF32LB52_HXT_DEFINE

#define PBL_SF32LB52_HXT_DEFINE	(		sym,
			_name,
			_flash,
			...
	)

Value:

  PBL_DEVICE_STATE_DEFINE(sym);                                                         \
  static const char *const sym##_cells[] = {__VA_ARGS__};                               \
  const struct pbl_sf32lb52_hxt sym = {                                                 \
    .dev = PBL_DEVICE_INIT(sym, _name, pbl_sf32lb52_hxt_init, &(_flash)->dev, nullptr), \
    .flash = (_flash),                                                                  \
    .cells = sym##_cells,                                                               \
    .num_cells = sizeof(sym##_cells) / sizeof(sym##_cells[0]),                          \
  };                                                                                    \
  PBL_DEVICE_REGISTER(sym, &sym.dev)

Define the crystal trim device.

Parameters

sym	Symbol of the device.
_name	Name.
_flash	Flash, a struct pbl_flash.
...	Names of the OTP cells holding the factory configuration, in search order.