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Merge pull request #4080 from xckhmf/master 

[bsp/nrf5x]support for i2c
This commit is contained in:
Bernard Xiong 2020-11-25 16:23:55 +08:00 committed by GitHub
parent 72cd063282 3923a13780
commit 94559ae13a
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GPG Key ID: 4AEE18F83AFDEB23
7 changed files with 231 additions and 7 deletions
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3
bsp/nrf5x/libraries/drivers/SConscript
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@ -19,6 +19,9 @@ if GetDepend(['BSP_USING_ON_CHIP_FLASH']):
if GetDepend(['BSP_USING_QSPI_FLASH']):
src += ['drv_qspi_flash.c']
if GetDepend(['BSP_USING_I2C']):
src += ['drv_i2c.c']
if GetDepend(['BSP_USING_SPI']):
src += ['drv_spi.c']

116
bsp/nrf5x/libraries/drivers/drv_i2c.c Normal file
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@ -0,0 +1,116 @@
/*
* Copyright (c) 2006-2020, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2020-11-15 xckhmf First Verison
*
*/
#include <rtdevice.h>
#include <nrfx_twi_twim.h>
#include <nrfx_twim.h>
#include <drv_i2c.h>
#if defined(BSP_USING_I2C0) || defined(BSP_USING_I2C1)
typedef struct
{
nrf_twim_frequency_t freq;
uint32_t scl_pin;
uint32_t sda_pin;
nrfx_twim_t twi_instance;
}drv_i2c_cfg_t;
#ifdef BSP_USING_I2C0
static drv_i2c_cfg_t drv_i2c_0 =
{
.freq = NRF_TWIM_FREQ_400K,
.scl_pin = BSP_I2C0_SCL_PIN,
.sda_pin = BSP_I2C0_SDA_PIN,
.twi_instance = NRFX_TWIM_INSTANCE(0)
};
static struct rt_i2c_bus_device i2c0_bus;
#endif
#ifdef BSP_USING_I2C1
static drv_i2c_cfg_t drv_i2c_1 =
{
.freq = NRF_TWIM_FREQ_400K,
.scl_pin = BSP_I2C1_SCL_PIN,
.sda_pin = BSP_I2C1_SDA_PIN,
.twi_instance = NRFX_TWIM_INSTANCE(1)
};
static struct rt_i2c_bus_device i2c1_bus;
#endif
static int twi_master_init(struct rt_i2c_bus_device *bus)
{
nrfx_err_t rtn;
nrfx_twim_config_t config = NRFX_TWIM_DEFAULT_CONFIG(0,0);
drv_i2c_cfg_t *p_cfg = bus->priv;
nrfx_twim_t const * p_instance = &p_cfg->twi_instance;
config.frequency = p_cfg->freq;
config.scl = p_cfg->scl_pin;
config.sda = p_cfg->sda_pin;
nrfx_twi_twim_bus_recover(config.scl,config.sda);
rtn = nrfx_twim_init(p_instance,&config,NULL,NULL);
nrfx_twim_enable(p_instance);
return 0;
}
static rt_size_t _master_xfer(struct rt_i2c_bus_device *bus,
struct rt_i2c_msg msgs[],
rt_uint32_t num)
{
nrfx_twim_t const * p_instance = &((drv_i2c_cfg_t *)bus->priv)->twi_instance;
nrfx_err_t ret = NRFX_ERROR_INTERNAL;
uint32_t no_stop_flag = 0;
nrfx_twim_xfer_desc_t xfer = NRFX_TWIM_XFER_DESC_TX(msgs->addr,msgs->buf, msgs->len);
if((msgs->flags & 0x01) == RT_I2C_WR)
{
xfer.type = NRFX_TWIM_XFER_TX;
if((msgs->flags & 0x40) == RT_I2C_NO_READ_ACK)
{
no_stop_flag = NRFX_TWIM_FLAG_TX_NO_STOP;
}
}
else if((msgs->flags & 0x01) == RT_I2C_RD)
{
xfer.type = NRFX_TWIM_XFER_RX;
}
ret = nrfx_twim_xfer(p_instance,&xfer,no_stop_flag);
return (ret == NRFX_SUCCESS) ? msgs->len : 0;
}
static const struct rt_i2c_bus_device_ops _i2c_ops =
{
_master_xfer,
NULL,
NULL,
};
int rt_hw_i2c_init(void)
{
#ifdef BSP_USING_I2C0
i2c0_bus.ops= &_i2c_ops;
i2c0_bus.timeout = 0;
i2c0_bus.priv = (void *)&drv_i2c_0;
twi_master_init(&i2c0_bus);
rt_i2c_bus_device_register(&i2c0_bus, "i2c0");
#endif
#ifdef BSP_USING_I2C1
i2c1_bus.ops= &_i2c_ops;
i2c1_bus.timeout = 0;
i2c1_bus.priv = (void *)&drv_i2c_1;
twi_master_init(&i2c1_bus);
rt_i2c_bus_device_register(&i2c1_bus, "i2c1");
#endif
return 0;
}
INIT_BOARD_EXPORT(rt_hw_i2c_init);
#endif /* defined(BSP_USING_I2C0) || defined(BSP_USING_I2C1) */

23
bsp/nrf5x/libraries/drivers/drv_i2c.h Normal file
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@ -0,0 +1,23 @@
/*
* Copyright (c) 2006-2020, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2020-11-15 xckhmf First Verison
*
*/
#ifndef __DRV_I2C_H__
#define __DRV_I2C_H__
#ifdef __cplusplus
extern "C" {
#endif
#ifdef __cplusplus
}
#endif
#endif /* __DRV_I2C_H__ */

42
bsp/nrf5x/nrf52832/board/Kconfig
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@ -219,6 +219,48 @@ menu "On-chip Peripheral Drivers"
endif
endif
config BSP_USING_I2C
bool "Enable I2C"
select RT_USING_I2C
default n
if BSP_USING_I2C
config NRFX_TWIM_ENABLED
int
default 1
config BSP_USING_I2C0
bool "Enable I2C0 bus"
default n
if BSP_USING_I2C0
config NRFX_TWIM0_ENABLED
int
default 1
config BSP_I2C0_SCL_PIN
int "i2c0 scl pin number"
range 0 31
default 27
config BSP_I2C0_SDA_PIN
int "I2C0 sda pin number"
range 0 31
default 26
endif
config BSP_USING_I2C1
bool "Enable I2C1 bus"
default n
if BSP_USING_I2C1
config NRFX_TWIM1_ENABLED
int
default 1
config BSP_I2C1_SCL_PIN
int "i2c1 scl pin number"
range 0 31
default 3
config BSP_I2C1_SDA_PIN
int "I2C1 sda pin number"
range 0 31
default 2
endif
endif
config BSP_USING_SPI
bool "Enable SPI"
select RT_USING_PIN

2
bsp/nrf5x/nrf52832/board/sdk_config.h
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@ -3557,7 +3557,7 @@
// <e> NRFX_SPI_ENABLED - nrfx_spi - SPI peripheral driver
//==========================================================
#ifndef NRFX_SPI_ENABLED
#define NRFX_SPI_ENABLED 1
#define NRFX_SPI_ENABLED 0
#endif
// <q> NRFX_SPI0_ENABLED - Enable SPI0 instance

42
bsp/nrf5x/nrf52840/board/Kconfig
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@ -271,7 +271,47 @@ menu "On-chip Peripheral Drivers"
default 5
endif
endif
config BSP_USING_I2C
bool "Enable I2C"
select RT_USING_I2C
default n
if BSP_USING_I2C
config NRFX_TWIM_ENABLED
int
default 1
config BSP_USING_I2C0
bool "Enable I2C0 bus"
default n
if BSP_USING_I2C0
config NRFX_TWIM0_ENABLED
int
default 1
config BSP_I2C0_SCL_PIN
int "i2c0 scl pin number"
range 0 31
default 27
config BSP_I2C0_SDA_PIN
int "I2C0 sda pin number"
range 0 31
default 26
endif
config BSP_USING_I2C1
bool "Enable I2C1 bus"
default n
if BSP_USING_I2C1
config NRFX_TWIM1_ENABLED
int
default 1
config BSP_I2C1_SCL_PIN
int "i2c1 scl pin number"
range 0 31
default 3
config BSP_I2C1_SDA_PIN
int "I2C1 sda pin number"
range 0 31
default 2
endif
endif
config BSP_USING_SPI
bool "Enable SPI"
select RT_USING_PIN

8
bsp/nrf5x/nrf52840/board/sdk_config.h
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@ -3557,27 +3557,27 @@
// <e> NRFX_SPI_ENABLED - nrfx_spi - SPI peripheral driver
//==========================================================
#ifndef NRFX_SPI_ENABLED
#define NRFX_SPI_ENABLED 1
#define NRFX_SPI_ENABLED 0
#endif
// <q> NRFX_SPI0_ENABLED - Enable SPI0 instance
#ifndef NRFX_SPI0_ENABLED
#define NRFX_SPI0_ENABLED 1
#define NRFX_SPI0_ENABLED 0
#endif
// <q> NRFX_SPI1_ENABLED - Enable SPI1 instance
#ifndef NRFX_SPI1_ENABLED
#define NRFX_SPI1_ENABLED 1
#define NRFX_SPI1_ENABLED 0
#endif
// <q> NRFX_SPI2_ENABLED - Enable SPI2 instance
#ifndef NRFX_SPI2_ENABLED
#define NRFX_SPI2_ENABLED 1
#define NRFX_SPI2_ENABLED 0
#endif
// <o> NRFX_SPI_MISO_PULL_CFG - MISO pin pull configuration.