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Diffstat (limited to 'bsp/imxrt/libraries/drivers/drv_spi.c')
-rw-r--r--bsp/imxrt/libraries/drivers/drv_spi.c136
1 files changed, 68 insertions, 68 deletions
diff --git a/bsp/imxrt/libraries/drivers/drv_spi.c b/bsp/imxrt/libraries/drivers/drv_spi.c
index e0375166a2..d37561ac54 100644
--- a/bsp/imxrt/libraries/drivers/drv_spi.c
+++ b/bsp/imxrt/libraries/drivers/drv_spi.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2006-2018, RT-Thread Development Team
+ * Copyright (c) 2006-2021, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
@@ -11,10 +11,10 @@
#include <rtthread.h>
#ifdef BSP_USING_SPI
-#include "drv_spi.h"
-#include "fsl_common.h"
-#include "fsl_iomuxc.h"
-#include "fsl_lpspi.h"
+#include "drv_spi.h"
+#include "fsl_common.h"
+#include "fsl_iomuxc.h"
+#include "fsl_lpspi.h"
#include "fsl_lpspi_edma.h"
#include "fsl_dmamux.h"
@@ -166,21 +166,21 @@ void edma_xfer_callback(LPSPI_Type *base, lpspi_master_edma_handle_t *handle, st
rt_err_t rt_hw_spi_device_attach(const char *bus_name, const char *device_name, rt_uint32_t pin)
{
- rt_err_t ret = RT_EOK;
-
- struct rt_spi_device *spi_device = (struct rt_spi_device *)rt_malloc(sizeof(struct rt_spi_device));
- RT_ASSERT(spi_device != RT_NULL);
-
- struct imxrt_sw_spi_cs *cs_pin = (struct imxrt_sw_spi_cs *)rt_malloc(sizeof(struct imxrt_sw_spi_cs));
+ rt_err_t ret = RT_EOK;
+
+ struct rt_spi_device *spi_device = (struct rt_spi_device *)rt_malloc(sizeof(struct rt_spi_device));
+ RT_ASSERT(spi_device != RT_NULL);
+
+ struct imxrt_sw_spi_cs *cs_pin = (struct imxrt_sw_spi_cs *)rt_malloc(sizeof(struct imxrt_sw_spi_cs));
RT_ASSERT(cs_pin != RT_NULL);
-
+
cs_pin->pin = pin;
- rt_pin_mode(pin, PIN_MODE_OUTPUT);
- rt_pin_write(pin, PIN_HIGH);
-
- ret = rt_spi_bus_attach_device(spi_device, device_name, bus_name, (void *)cs_pin);
-
- return ret;
+ rt_pin_mode(pin, PIN_MODE_OUTPUT);
+ rt_pin_write(pin, PIN_HIGH);
+
+ ret = rt_spi_bus_attach_device(spi_device, device_name, bus_name, (void *)cs_pin);
+
+ return ret;
}
static uint32_t imxrt_get_lpspi_freq(void)
@@ -188,31 +188,31 @@ static uint32_t imxrt_get_lpspi_freq(void)
uint32_t freq = 0;
/* CLOCK_GetMux(kCLOCK_LpspiMux):
- 00b: derive clock from PLL3 PFD1 720M
- 01b: derive clock from PLL3 PFD0 720M
- 10b: derive clock from PLL2 528M
- 11b: derive clock from PLL2 PFD2 396M
+ 00b: derive clock from PLL3 PFD1 720M
+ 01b: derive clock from PLL3 PFD0 720M
+ 10b: derive clock from PLL2 528M
+ 11b: derive clock from PLL2 PFD2 396M
*/
switch(CLOCK_GetMux(kCLOCK_LpspiMux))
{
case 0:
- freq = CLOCK_GetFreq(kCLOCK_Usb1PllPfd1Clk);
- break;
-
+ freq = CLOCK_GetFreq(kCLOCK_Usb1PllPfd1Clk);
+ break;
+
case 1:
- freq = CLOCK_GetFreq(kCLOCK_Usb1PllPfd0Clk);
- break;
-
+ freq = CLOCK_GetFreq(kCLOCK_Usb1PllPfd0Clk);
+ break;
+
case 2:
- freq = CLOCK_GetFreq(kCLOCK_SysPllClk);
- break;
-
+ freq = CLOCK_GetFreq(kCLOCK_SysPllClk);
+ break;
+
case 3:
- freq = CLOCK_GetFreq(kCLOCK_SysPllPfd2Clk);
- break;
+ freq = CLOCK_GetFreq(kCLOCK_SysPllPfd2Clk);
+ break;
}
-
- freq /= (CLOCK_GetDiv(kCLOCK_LpspiDiv) + 1U);
+
+ freq /= (CLOCK_GetDiv(kCLOCK_LpspiDiv) + 1U);
return freq;
}
@@ -228,7 +228,7 @@ static void lpspi_dma_config(struct imxrt_spi *spi)
DMAMUX_SetSource(DMAMUX, spi->dma->tx_channel, spi->dma->tx_request);
DMAMUX_EnableChannel(DMAMUX, spi->dma->tx_channel);
EDMA_CreateHandle(&spi->dma->tx_edma, DMA0, spi->dma->tx_channel);
-
+
LPSPI_MasterTransferCreateHandleEDMA(spi->base,
&spi->dma->spi_edma,
edma_xfer_callback,
@@ -241,8 +241,8 @@ static void lpspi_dma_config(struct imxrt_spi *spi)
static rt_err_t spi_configure(struct rt_spi_device *device, struct rt_spi_configuration *cfg)
{
- lpspi_master_config_t masterConfig;
- struct imxrt_spi *spi = RT_NULL;
+ lpspi_master_config_t masterConfig;
+ struct imxrt_spi *spi = RT_NULL;
RT_ASSERT(cfg != RT_NULL);
RT_ASSERT(device != RT_NULL);
@@ -252,76 +252,76 @@ static rt_err_t spi_configure(struct rt_spi_device *device, struct rt_spi_config
if(cfg->data_width != 8 && cfg->data_width != 16 && cfg->data_width != 32)
{
- return RT_EINVAL;
+ return RT_EINVAL;
}
- LPSPI_MasterGetDefaultConfig(&masterConfig);
-
+ LPSPI_MasterGetDefaultConfig(&masterConfig);
+
if(cfg->max_hz > 40*1000*1000)
{
cfg->max_hz = 40*1000*1000;
}
- masterConfig.baudRate = cfg->max_hz;
- masterConfig.bitsPerFrame = cfg->data_width;
-
+ masterConfig.baudRate = cfg->max_hz;
+ masterConfig.bitsPerFrame = cfg->data_width;
+
if(cfg->mode & RT_SPI_MSB)
{
- masterConfig.direction = kLPSPI_MsbFirst;
+ masterConfig.direction = kLPSPI_MsbFirst;
}
else
{
- masterConfig.direction = kLPSPI_LsbFirst;
+ masterConfig.direction = kLPSPI_LsbFirst;
}
-
+
if(cfg->mode & RT_SPI_CPHA)
{
- masterConfig.cpha = kLPSPI_ClockPhaseSecondEdge;
+ masterConfig.cpha = kLPSPI_ClockPhaseSecondEdge;
}
else
{
- masterConfig.cpha = kLPSPI_ClockPhaseFirstEdge;
+ masterConfig.cpha = kLPSPI_ClockPhaseFirstEdge;
}
-
+
if(cfg->mode & RT_SPI_CPOL)
{
- masterConfig.cpol = kLPSPI_ClockPolarityActiveLow;
+ masterConfig.cpol = kLPSPI_ClockPolarityActiveLow;
}
else
{
- masterConfig.cpol = kLPSPI_ClockPolarityActiveHigh;
+ masterConfig.cpol = kLPSPI_ClockPolarityActiveHigh;
}
- masterConfig.pinCfg = kLPSPI_SdiInSdoOut;
+ masterConfig.pinCfg = kLPSPI_SdiInSdoOut;
masterConfig.dataOutConfig = kLpspiDataOutTristate;
- masterConfig.pcsToSckDelayInNanoSec = 1000000000 / masterConfig.baudRate;
- masterConfig.lastSckToPcsDelayInNanoSec = 1000000000 / masterConfig.baudRate;
- masterConfig.betweenTransferDelayInNanoSec = 1000000000 / masterConfig.baudRate;
+ masterConfig.pcsToSckDelayInNanoSec = 1000000000 / masterConfig.baudRate;
+ masterConfig.lastSckToPcsDelayInNanoSec = 1000000000 / masterConfig.baudRate;
+ masterConfig.betweenTransferDelayInNanoSec = 1000000000 / masterConfig.baudRate;
- LPSPI_MasterInit(spi->base, &masterConfig, imxrt_get_lpspi_freq());
- spi->base->CFGR1 |= LPSPI_CFGR1_PCSCFG_MASK;
+ LPSPI_MasterInit(spi->base, &masterConfig, imxrt_get_lpspi_freq());
+ spi->base->CFGR1 |= LPSPI_CFGR1_PCSCFG_MASK;
return RT_EOK;
}
static rt_uint32_t spixfer(struct rt_spi_device *device, struct rt_spi_message *message)
{
- lpspi_transfer_t transfer;
+ lpspi_transfer_t transfer;
status_t status;
RT_ASSERT(device != RT_NULL);
RT_ASSERT(device->bus != RT_NULL);
RT_ASSERT(device->bus->parent.user_data != RT_NULL);
- struct imxrt_spi *spi = (struct imxrt_spi *)(device->bus->parent.user_data);
- struct imxrt_sw_spi_cs *cs = device->parent.user_data;
+ struct imxrt_spi *spi = (struct imxrt_spi *)(device->bus->parent.user_data);
+ struct imxrt_sw_spi_cs *cs = device->parent.user_data;
if(message->cs_take)
{
rt_pin_write(cs->pin, PIN_LOW);
}
- transfer.dataSize = message->length;
- transfer.rxData = (uint8_t *)(message->recv_buf);
- transfer.txData = (uint8_t *)(message->send_buf);
+ transfer.dataSize = message->length;
+ transfer.rxData = (uint8_t *)(message->recv_buf);
+ transfer.txData = (uint8_t *)(message->send_buf);
if(RT_FALSE == spi->dma_flag)
{
@@ -343,10 +343,10 @@ static rt_uint32_t spixfer(struct rt_spi_device *device, struct rt_spi_message *
message->length = 0;
}
- return message->length;
+ return message->length;
}
-static struct rt_spi_ops imxrt_spi_ops =
+static struct rt_spi_ops imxrt_spi_ops =
{
.configure = spi_configure,
.xfer = spixfer
@@ -371,8 +371,8 @@ int rt_hw_spi_bus_init(void)
}
}
- return ret;
+ return ret;
}
-INIT_BOARD_EXPORT(rt_hw_spi_bus_init);
+INIT_BOARD_EXPORT(rt_hw_spi_bus_init);
#endif /* BSP_USING_SPI */
generated by cgit v1.3.1 (git 2.54.0) at 2026-10-25 00:53:33 +0000