Common CPU specific definitions for all SAM3/SAM4x based CPUs. More...

Detailed Description

Common CPU specific definitions for all SAM3/SAM4x based CPUs.

Common CPU specific definitions for all SAM3/SAM4x based CPUs

Author: Dylan Laduranty dylan.nosp@m..lad.nosp@m.urant.nosp@m.y@me.nosp@m.sotic.nosp@m..com

Definition in file periph_cpu_common.h.

#include "cpu.h"

Include dependency graph for periph_cpu_common.h:

Go to the source code of this file.

Data Structures
struct	timer_conf_t
	Timer device configuration. More...

struct	uart_conf_t
	UART device configuration. More...

#define	TIMER_CHANNEL_NUMOF (1)
	We use one channel for each defined timer.

#define	GPIO_MODE(io, pu, od)
	Generate GPIO mode bitfields.

enum	gpio_mux_t { GPIO_MUX_A = 0 , GPIO_MUX_B = 1 }
	GPIO mux configuration. More...

enum	{ PA = 0 , PB = 1 , PC = 2 }
	Available ports on the SAM3/SAM4S based MCUs. More...

void	gpio_init_mux (gpio_t pin, gpio_mux_t mux)
	Configure the given GPIO pin to be used with the given MUX setting.

Macro Definition Documentation

◆ GPIO_MODE

#define GPIO_MODE	(	io,
		pu,
		od )

Value:

(io | (pu << 1) | (od << 2))

Generate GPIO mode bitfields.

We use 3 bit to determine the pin functions:

bit 0: in/out
bit 1: PU enable
bit 2: OD enable

Definition at line 56 of file periph_cpu_common.h.

◆ TIMER_CHANNEL_NUMOF

#define TIMER_CHANNEL_NUMOF (1)

We use one channel for each defined timer.

While the peripheral provides three channels, the current interrupt flag handling leads to a race condition where calling timer_clear() on one channel can disable a pending flag for other channels. Until resolved, limit the peripheral to only one channel.

Definition at line 46 of file periph_cpu_common.h.

Enumeration Type Documentation

◆ anonymous enum

anonymous enum

Available ports on the SAM3/SAM4S based MCUs.

Enumerator
PA	port A
PB	port B
PC	port C

Definition at line 92 of file periph_cpu_common.h.

◆ gpio_mux_t

enum gpio_mux_t

GPIO mux configuration.

Enumerator
GPIO_MUX_A	alternate function A
GPIO_MUX_B	alternate function B

Definition at line 80 of file periph_cpu_common.h.

Function Documentation

◆ gpio_init_mux()

void gpio_init_mux	(	gpio_t	pin,
		gpio_mux_t	mux )

Configure the given GPIO pin to be used with the given MUX setting.

Parameters

[in]	pin	GPIO pin to configure
[in]	mux	MUX setting to use