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cpu/cc2538: add periph/i2c driver #3765

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merged 1 commit into from
Mar 7, 2016
Merged

cpu/cc2538: add periph/i2c driver #3765

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1 change: 1 addition & 0 deletions boards/cc2538dk/Makefile.features
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Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,7 @@
FEATURES_PROVIDED += periph_cpuid
FEATURES_PROVIDED += periph_gpio
FEATURES_PROVIDED += periph_hwrng
FEATURES_PROVIDED += periph_i2c
FEATURES_PROVIDED += periph_timer
FEATURES_PROVIDED += periph_uart

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24 changes: 24 additions & 0 deletions boards/cc2538dk/include/periph_conf.h
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Original file line number Diff line number Diff line change
Expand Up @@ -20,6 +20,7 @@
#define PERIPH_CONF_H_

#include "cpu.h"
#include "periph_cpu.h"

#ifdef __cplusplus
extern "C" {
Expand Down Expand Up @@ -105,6 +106,29 @@ extern "C" {
#define UART_1_CTS_PIN GPIO_PB0
/** @} */

/**
* @name I2C configuration
* @{
*/
#define I2C_NUMOF 1
#define I2C_0_EN 1
#define I2C_IRQ_PRIO 1

/* I2C 0 device configuration */
#define I2C_0_DEV 0
#define I2C_0_IRQ I2C_IRQn
#define I2C_0_IRQ_HANDLER isr_i2c
#define I2C_0_SCL_PIN GPIO_PA2 /* SPI_SCK on the SmartRF06 baseboard */
#define I2C_0_SDA_PIN GPIO_PA4 /* SPI_MOSI on the SmartRF06 baseboard */

static const i2c_conf_t i2c_config[I2C_NUMOF] = {
{
.scl_pin = GPIO_PA2, /* SPI_SCK on the SmartRF06 baseboard */
.sda_pin = GPIO_PA4, /* SPI_MOSI on the SmartRF06 baseboard */
},
};
/** @} */

/**
* @name GPIO configuration
* @{
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1 change: 1 addition & 0 deletions boards/openmote-cc2538/Makefile.features
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Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,7 @@
FEATURES_PROVIDED += periph_cpuid
FEATURES_PROVIDED += periph_gpio
FEATURES_PROVIDED += periph_hwrng
FEATURES_PROVIDED += periph_i2c
FEATURES_PROVIDED += periph_timer
FEATURES_PROVIDED += periph_uart

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26 changes: 26 additions & 0 deletions boards/openmote-cc2538/include/periph_conf.h
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Expand Up @@ -19,6 +19,9 @@
#ifndef PERIPH_CONF_H_
#define PERIPH_CONF_H_

#include "cc2538_gpio.h"
#include "periph_cpu.h"

#ifdef __cplusplus
extern "C" {
#endif
Expand Down Expand Up @@ -95,6 +98,29 @@
#define UART_0_RX_PIN GPIO_PA0
/** @} */

/**
* @name I2C configuration
* @{
*/
#define I2C_NUMOF 1
#define I2C_0_EN 1
#define I2C_IRQ_PRIO 1

/* I2C 0 device configuration */
#define I2C_0_DEV 0
#define I2C_0_IRQ I2C_IRQn
#define I2C_0_IRQ_HANDLER isr_i2c
#define I2C_0_SCL_PIN GPIO_PB3 /* OpenBattery */
#define I2C_0_SDA_PIN GPIO_PB4 /* OpenBattery */

static const i2c_conf_t i2c_config[I2C_NUMOF] = {
{
.scl_pin = GPIO_PB3, /* OpenBattery */
.sda_pin = GPIO_PB4, /* OpenBattery */
},
};
/** @} */

/**
* @name GPIO configuration
* @{
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1 change: 1 addition & 0 deletions boards/remote/Makefile.features
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Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,7 @@
FEATURES_PROVIDED += periph_cpuid
FEATURES_PROVIDED += periph_gpio
FEATURES_PROVIDED += periph_hwrng
FEATURES_PROVIDED += periph_i2c
FEATURES_PROVIDED += periph_timer
FEATURES_PROVIDED += periph_uart

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26 changes: 26 additions & 0 deletions boards/remote/include/periph_conf.h
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Expand Up @@ -21,6 +21,9 @@
#ifndef PERIPH_CONF_H_
#define PERIPH_CONF_H_

#include "cc2538_gpio.h"
#include "periph_cpu.h"

#ifdef __cplusplus
extern "C" {
#endif
Expand Down Expand Up @@ -98,6 +101,29 @@
#define UART_0_RX_PIN GPIO_PA0
/** @} */

/**
* @name I2C configuration
* @{
*/
#define I2C_NUMOF 1
#define I2C_0_EN 1
#define I2C_IRQ_PRIO 1

/* I2C 0 device configuration */
#define I2C_0_DEV 0
#define I2C_0_IRQ I2C_IRQn
#define I2C_0_IRQ_HANDLER isr_i2c
#define I2C_0_SCL_PIN GPIO_PB1
#define I2C_0_SDA_PIN GPIO_PB0

static const i2c_conf_t i2c_config[I2C_NUMOF] = {
{
.scl_pin = GPIO_PC3,
.sda_pin = GPIO_PC2,
},
};
/** @} */

/**
* @name GPIO configuration
* @{
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2 changes: 2 additions & 0 deletions cpu/cc2538/include/cc2538_gpio.h
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Expand Up @@ -122,6 +122,8 @@ enum {
*/
#define gpio_dir_input(gpio_num) ( GPIO_NUM_TO_DEV(gpio_num)->DIR &= ~GPIO_PIN_MASK(GPIO_BIT_NUM(gpio_num)) )

#define cc2538_gpio_read(gpio_num) ( (GPIO_NUM_TO_DEV(gpio_num)->DATA >> GPIO_BIT_NUM(gpio_num)) & 1 )

/**
* @brief Set a specific GPIO output pin high
*
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22 changes: 20 additions & 2 deletions cpu/cc2538/include/periph_cpu.h
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Original file line number Diff line number Diff line change
Expand Up @@ -19,8 +19,6 @@
#ifndef PERIPH_CPU_H_
#define PERIPH_CPU_H_

#include "periph/dev_enums.h"

#ifdef __cplusplus
extern "C" {
#endif
Expand All @@ -30,9 +28,29 @@ extern "C" {
*/
#define CPUID_LEN (8U)

/**
* @brief Define a custom type for GPIO pins
* @{
*/
#define HAVE_GPIO_T
typedef uint32_t gpio_t;
/** @} */

/**
* @brief Definition of a fitting UNDEF value
*/
#define GPIO_UNDEF (0xffffffff)

typedef struct {
gpio_t scl_pin; /**< pin used for SCL */
gpio_t sda_pin; /**< pin used for SDA */
} i2c_conf_t;

#ifdef __cplusplus
}
#endif

#include "periph/dev_enums.h"

#endif /* PERIPH_CPU_H_ */
/** @} */
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