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[bsp][nxp][mcxa153] add i2c driver

This commit is contained in:
hywing 2024-08-21 22:20:26 +08:00 committed by Meco Man
parent f5156774b2
commit d3b9480658
3 changed files with 203 additions and 6 deletions
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146
bsp/nxp/mcx/mcxa/Libraries/drivers/drv_i2c.c Normal file
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@ -0,0 +1,146 @@
/*
* Copyright (c) 2006-2024 RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2023-08-21 hywing The first version
*/
#include <rtdevice.h>
#include "fsl_lpi2c.h"
#include "fsl_lpi2c_edma.h"
#include "fsl_edma.h"
#ifdef RT_USING_I2C
enum
{
#ifdef BSP_USING_I2C0
I2C0_INDEX,
#endif
};
#define i2c_dbg rt_kprintf
struct lpc_i2c_bus
{
struct rt_i2c_bus_device parent;
LPI2C_Type *I2C;
clock_attach_id_t clock_attach_id;
clock_div_name_t clock_div_name;
clock_name_t clock_src;
uint32_t baud;
char *name;
};
struct lpc_i2c_bus lpc_obj[] =
{
#ifdef BSP_USING_I2C0
{
.I2C = LPI2C0,
.baud = 100000U,
.clock_attach_id = kFRO12M_to_LPI2C0,
.clock_div_name = kCLOCK_DivLPI2C0,
.clock_src = kCLOCK_Fro12M,
.name = "i2c0",
},
#endif
};
static rt_ssize_t lpc_i2c_xfer(struct rt_i2c_bus_device *bus, struct rt_i2c_msg msgs[], rt_uint32_t num)
{
struct rt_i2c_msg *msg;
lpi2c_master_transfer_t xfer = {0};
rt_uint32_t i;
rt_ssize_t ret = 0;
struct lpc_i2c_bus *lpc_i2c = (struct lpc_i2c_bus *)bus;
for (i = 0; i < num; i++)
{
msg = &msgs[i];
if (msg->flags & RT_I2C_RD)
{
xfer.slaveAddress = msg->addr;
xfer.direction = kLPI2C_Read;
xfer.subaddress = 0;
xfer.subaddressSize = 0;
xfer.data = msg->buf;
xfer.dataSize = msg->len;
if(i != 0)
xfer.flags = kLPI2C_TransferRepeatedStartFlag;
else
xfer.flags = kLPI2C_TransferDefaultFlag;
if (LPI2C_MasterTransferBlocking(lpc_i2c->I2C, &xfer) != kStatus_Success)
{
i2c_dbg("i2c bus read failed!\n");
return i;
}
}
else
{
xfer.slaveAddress = msg->addr;
xfer.direction = kLPI2C_Write;
xfer.subaddress = 0;
xfer.subaddressSize = 0;
xfer.data = msg->buf;
xfer.dataSize = msg->len;
if(i == 0)
xfer.flags = kLPI2C_TransferNoStopFlag;
else
xfer.flags = kLPI2C_TransferDefaultFlag;
if (LPI2C_MasterTransferBlocking(lpc_i2c->I2C, &xfer) != kStatus_Success)
{
i2c_dbg("i2c bus write failed!\n");
return i;
}
}
}
ret = i;
return ret;
}
static const struct rt_i2c_bus_device_ops i2c_ops =
{
lpc_i2c_xfer,
RT_NULL,
RT_NULL
};
int rt_hw_i2c_init(void)
{
int i;
lpi2c_master_config_t masterConfig;
for(i=0; i<ARRAY_SIZE(lpc_obj); i++)
{
CLOCK_SetClockDiv(lpc_obj[i].clock_div_name, 1u);
CLOCK_AttachClk(lpc_obj[i].clock_attach_id);
LPI2C_MasterGetDefaultConfig(&masterConfig);
masterConfig.baudRate_Hz = lpc_obj[i].baud;
LPI2C_MasterInit(lpc_obj[i].I2C, &masterConfig, CLOCK_GetFreq(lpc_obj[i].clock_src));
lpc_obj[i].parent.ops = &i2c_ops;
rt_i2c_bus_device_register(&lpc_obj[i].parent, lpc_obj[i].name);
}
return RT_EOK;
}
INIT_DEVICE_EXPORT(rt_hw_i2c_init);
#endif /* RT_USING_I2C */

9
bsp/nxp/mcx/mcxa/frdm-mcxa153/board/Kconfig
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@ -35,15 +35,12 @@ menu "On-chip Peripheral Drivers"
config BSP_USING_I2C
bool "Enable I2C"
select RT_USING_I2C
default y
default n
if BSP_USING_I2C
config BSP_USING_I2C0
bool "Enable Flexcomm0 I2C"
default y
config BSP_USING_I2C1
bool "Enable Flexcomm1 I2C"
default y
bool "Enable I2C0"
default n
endif
menuconfig BSP_USING_SPI

54
bsp/nxp/mcx/mcxa/frdm-mcxa153/board/MCUX_Config/board/pin_mux.c
View File

@ -54,6 +54,8 @@ void BOARD_InitPins(void)
RESET_ReleasePeripheralReset(kCTIMER1_RST_SHIFT_RSTn);
RESET_ReleasePeripheralReset(kLPSPI0_RST_SHIFT_RSTn);
RESET_ReleasePeripheralReset(kLPI2C0_RST_SHIFT_RSTn);
RESET_ReleasePeripheralReset(kPORT0_RST_SHIFT_RSTn);
RESET_ReleasePeripheralReset(kPORT1_RST_SHIFT_RSTn);
RESET_ReleasePeripheralReset(kPORT2_RST_SHIFT_RSTn);
@ -244,4 +246,56 @@ void BOARD_InitPins(void)
/* PORT1_3 (pin 59) is configured as LPSPI0_PCS0 */
PORT_SetPinConfig(PORT1, 3U, &port1_3_pin59_config);
#endif
#ifdef BSP_USING_I2C0
const port_pin_config_t port3_27_pin34_config = {/* Internal pull-up resistor is enabled */
kPORT_PullUp,
/* Low internal pull resistor value is selected. */
kPORT_LowPullResistor,
/* Fast slew rate is configured */
kPORT_FastSlewRate,
/* Passive input filter is disabled */
kPORT_PassiveFilterDisable,
/* Open drain output is enabled */
kPORT_OpenDrainEnable,
/* Low drive strength is configured */
kPORT_LowDriveStrength,
/* Normal drive strength is configured */
kPORT_NormalDriveStrength,
/* Pin is configured as LPI2C0_SCL */
kPORT_MuxAlt2,
/* Digital input enabled */
kPORT_InputBufferEnable,
/* Digital input is not inverted */
kPORT_InputNormal,
/* Pin Control Register fields [15:0] are not locked */
kPORT_UnlockRegister};
/* PORT3_27 (pin 34) is configured as LPI2C0_SCL */
PORT_SetPinConfig(PORT3, 27U, &port3_27_pin34_config);
const port_pin_config_t port3_28_pin33_config = {/* Internal pull-up resistor is enabled */
kPORT_PullUp,
/* Low internal pull resistor value is selected. */
kPORT_LowPullResistor,
/* Fast slew rate is configured */
kPORT_FastSlewRate,
/* Passive input filter is disabled */
kPORT_PassiveFilterDisable,
/* Open drain output is enabled */
kPORT_OpenDrainEnable,
/* Low drive strength is configured */
kPORT_LowDriveStrength,
/* Normal drive strength is configured */
kPORT_NormalDriveStrength,
/* Pin is configured as LPI2C0_SDA */
kPORT_MuxAlt2,
/* Digital input enabled */
kPORT_InputBufferEnable,
/* Digital input is not inverted */
kPORT_InputNormal,
/* Pin Control Register fields [15:0] are not locked */
kPORT_UnlockRegister};
/* PORT3_28 (pin 33) is configured as LPI2C0_SDA */
PORT_SetPinConfig(PORT3, 28U, &port3_28_pin33_config);
#endif
}