periph_cpu_common.h File Reference

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. More...
#define	GPIO_MODE(io, pu, od)   (io | (pu << 1) | (od << 2))
	Generate GPIO mode bitfields. More...
enum	gpio_mux_t {   GPIO_MUX_A = 0x0 , GPIO_MUX_B = 0x1 , GPIO_MUX_C = 0x2 , GPIO_MUX_D = 0x3 ,   GPIO_MUX_E = 0x4 , GPIO_MUX_F = 0x5 , GPIO_MUX_G = 0x6 , GPIO_MUX_H = 0x7 ,   GPIO_MUX_I = 0x8 , GPIO_MUX_J = 0x9 , GPIO_MUX_K = 0xa , GPIO_MUX_L = 0xb ,   GPIO_MUX_M = 0xc , GPIO_MUX_N = 0xd , GPIO_MUX_DISABLED = 0xff , 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. More...

Macro Definition Documentation

GPIO_MODE

#define GPIO_MODE	(		io,
			pu,
			od
	)		(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	select peripheral function A
GPIO_MUX_B	select peripheral function B
GPIO_MUX_C	select peripheral function C
GPIO_MUX_D	select peripheral function D
GPIO_MUX_E	select peripheral function E
GPIO_MUX_F	select peripheral function F
GPIO_MUX_G	select peripheral function G
GPIO_MUX_H	select peripheral function H
GPIO_MUX_I	select peripheral function I
GPIO_MUX_J	select peripheral function J
GPIO_MUX_K	select peripheral function K
GPIO_MUX_L	select peripheral function L
GPIO_MUX_M	select peripheral function M
GPIO_MUX_N	select peripheral function N
GPIO_MUX_DISABLED	Disable
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