nRF5 PWM

PWM controller driver for the nRF5 PWM peripheral. More...

Data Structures
struct	pbl_pwm_nrf5
	nRF5 PWM controller. More...

Macros
#define	PBL_PWM_NRF5_DEFINE(sym, _name, _idx, _deps, ...)
	Define an nRF5 PWM controller.

Detailed Description

PWM controller driver for the nRF5 PWM peripheral.

Four channels share one counter, so channels running at the same time have the same period; applying another period fails with -EBUSY. The counter runs from the 16 MHz clock with the smallest prescaler that fits the period, at most 32767 counts. The outputs are GPIOs driven to their inactive level while the PWM is stopped.

PBL_PWM_NRF5_DEFINE(s_pwm0, "pwm0", 0, NULL, PBL_GPIO(NRF5_GPIO_P0, 26, 0));

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Data Structure Documentation

pbl_pwm_nrf5

struct pbl_pwm_nrf5

nRF5 PWM controller.

Data Fields
struct pbl_pwm_controller	ctrl	PWM controller.
uint8_t	index	Peripheral instance, from 0.
struct pbl_gpio	out[4]	Output of each channel; unconnected channels cannot be used.
struct pbl_pwm_nrf5_state *	state	Driver runtime state.

Macro Definition Documentation

PBL_PWM_NRF5_DEFINE

#define PBL_PWM_NRF5_DEFINE	(		sym,
			_name,
			_idx,
			_deps,
			...
	)

Value:

  PBL_PWM_CONTROLLER_STATE_DEFINE(sym, 4);                                                    \
  static struct pbl_pwm_nrf5_state sym##_nrf5_state;                                          \
  const struct pbl_pwm_nrf5 sym = {                                                           \
    .ctrl = PBL_PWM_CONTROLLER_INIT(sym, _name, pbl_pwm_nrf5_init, _deps, &pbl_pwm_nrf5_ops), \
    .state = &sym##_nrf5_state,                                                               \
    .out = {__VA_ARGS__},                                                                     \
    .index = (_idx),                                                                          \
  };                                                                                          \
  PBL_DEVICE_REGISTER(sym, &sym.ctrl.dev)

Define an nRF5 PWM controller.

Parameters

sym	Symbol of the controller.
_name	Name.
_idx	Peripheral instance, 0 to 3.
_deps	Dependencies from PBL_DEVICE_DEPS(), or NULL.
...	Outputs of channels 0 to 3, from PBL_GPIO().