Software APIs
dt_pwm.c File Reference

Device Tables (DT) for IP pwm and top earlgrey. More...

#include "dt/dt_pwm.h"

Go to the source code of this file.

Data Structures

struct  dt_desc_pwm
 Description of instances. More...
 

Macros

#define TRY_GET_DT(dt, default)
 Return a pointer to the dt_pwm_desc_t structure of the requested dt if it's a valid index.
 

Typedefs

typedef struct dt_desc_pwm dt_desc_pwm_t
 Description of instances.
 

Functions

dt_pwm_t dt_pwm_from_instance_id (dt_instance_id_t inst_id)
 Get the pwm instance from an instance ID.
 
dt_instance_id_t dt_pwm_instance_id (dt_pwm_t dt)
 Get the instance ID of an instance.
 
uint32_t dt_pwm_reg_block (dt_pwm_t dt, dt_pwm_reg_block_t reg_block)
 Get the register base address of an instance.
 
dt_alert_id_t dt_pwm_alert_to_alert_id (dt_pwm_t dt, dt_pwm_alert_t alert)
 Get the alert ID of a pwm alert for a given instance.
 
dt_pwm_alert_t dt_pwm_alert_from_alert_id (dt_pwm_t dt, dt_alert_id_t alert)
 Convert a global alert ID to a local pwm alert type.
 
dt_periph_io_t dt_pwm_periph_io (dt_pwm_t dt, dt_pwm_periph_io_t sig)
 Get the peripheral I/O description of an instance.
 
dt_clock_t dt_pwm_clock (dt_pwm_t dt, dt_pwm_clock_t clk)
 Get the clock signal connected to a clock port of an instance.
 
dt_reset_t dt_pwm_reset (dt_pwm_t dt, dt_pwm_reset_t rst)
 Get the reset signal connected to a reset port of an instance.
 

Detailed Description

Device Tables (DT) for IP pwm and top earlgrey.

Definition in file dt_pwm.c.


Data Structure Documentation

◆ dt_desc_pwm

struct dt_desc_pwm

Description of instances.

Definition at line 19 of file dt_pwm.c.

Data Fields
uint32_t base_addr[kDtPwmRegBlockCount] Base address of each register block.
dt_clock_t clock[kDtPwmClockCount] Clock signal connected to each clock port.
top_earlgrey_alert_id_t first_alert Alert ID of the first Alert of this instance.

This value is undefined if the block is not connected to the Alert Handler.

dt_instance_id_t inst_id Instance ID.
dt_periph_io_t periph_io[kDtPwmPeriphIoCount] Description of each peripheral I/O.
dt_reset_t reset[kDtPwmResetCount] Reset signal connected to each reset port.

Macro Definition Documentation

◆ TRY_GET_DT

#define TRY_GET_DT ( dt,
default )
Value:
({ if ((dt) < (dt_pwm_t)0 || (dt) >= kDtPwmCount) return (default); &pwm_desc[dt]; })

Return a pointer to the dt_pwm_desc_t structure of the requested dt if it's a valid index.

Otherwise, this macro will return (i.e. exit the function) with the provided default value.

Definition at line 109 of file dt_pwm.c.

Function Documentation

◆ dt_pwm_alert_from_alert_id()

dt_pwm_alert_t dt_pwm_alert_from_alert_id ( dt_pwm_t dt,
dt_alert_id_t alert )

Convert a global alert ID to a local pwm alert type.

Parameters
dtInstance of pwm.
alertA global alert ID that belongs to this instance.
Returns
The pwm alert, or kDtPwmAlertCount.

Note: This function assumes that the global alert ID belongs to the instance of pwm passed in parameter. In other words, it must be the case that dt_pwm_instance_id(dt) == dt_alert_id_to_instance_id(alert). Otherwise, this function will return kDtPwmAlertCount.

Definition at line 137 of file dt_pwm.c.

◆ dt_pwm_alert_to_alert_id()

dt_alert_id_t dt_pwm_alert_to_alert_id ( dt_pwm_t dt,
dt_pwm_alert_t alert )

Get the alert ID of a pwm alert for a given instance.

Note: This function only makes sense if the instance is connected to the Alert Handler. For any instances where the instance is not connected, the return value is unspecified.

Parameters
dtInstance of pwm.
alertA pwm alert.
Returns
The Alert Handler alert ID of the alert of this instance.

Definition at line 131 of file dt_pwm.c.

◆ dt_pwm_clock()

Get the clock signal connected to a clock port of an instance.

Parameters
dtInstance of pwm.
clkClock port.
Returns
Clock signal.

Definition at line 155 of file dt_pwm.c.

◆ dt_pwm_from_instance_id()

dt_pwm_t dt_pwm_from_instance_id ( dt_instance_id_t inst_id)

Get the pwm instance from an instance ID.

For example, dt_uart_from_instance_id(kDtInstanceIdUart3) == kDtUart3.

Parameters
inst_idInstance ID.
Returns
A pwm instance.

Note: This function only makes sense if the instance ID has device type pwm, otherwise the returned value is unspecified.

Definition at line 111 of file dt_pwm.c.

◆ dt_pwm_instance_id()

dt_instance_id_t dt_pwm_instance_id ( dt_pwm_t dt)

Get the instance ID of an instance.

Parameters
dtInstance of pwm.
Returns
The instance ID of that instance.

Definition at line 118 of file dt_pwm.c.

◆ dt_pwm_periph_io()

Get the peripheral I/O description of an instance.

Parameters
dtInstance of pwm.
sigRequested peripheral I/O.
Returns
Description of the requested peripheral I/O for this instance.

Definition at line 148 of file dt_pwm.c.

◆ dt_pwm_reg_block()

uint32_t dt_pwm_reg_block ( dt_pwm_t dt,
dt_pwm_reg_block_t reg_block )

Get the register base address of an instance.

Parameters
dtInstance of pwm.
reg_blockThe register block requested.
Returns
The register base address of the requested block.

Definition at line 123 of file dt_pwm.c.

◆ dt_pwm_reset()

Get the reset signal connected to a reset port of an instance.

Parameters
dtInstance of pwm.
rstReset port.
Returns
Reset signal.

Definition at line 162 of file dt_pwm.c.