diff options
Diffstat (limited to 'bsp/lpc54114-lite/drivers/drv_spi.c')
| -rw-r--r-- | bsp/lpc54114-lite/drivers/drv_spi.c | 138 |
1 files changed, 69 insertions, 69 deletions
diff --git a/bsp/lpc54114-lite/drivers/drv_spi.c b/bsp/lpc54114-lite/drivers/drv_spi.c index 0843e0baab..c83aaf03ee 100644 --- a/bsp/lpc54114-lite/drivers/drv_spi.c +++ b/bsp/lpc54114-lite/drivers/drv_spi.c @@ -1,12 +1,12 @@ /* - * Copyright (c) 2006-2018, RT-Thread Development Team + * Copyright (c) 2006-2021, RT-Thread Development Team * * SPDX-License-Identifier: Apache-2.0 */ #include "drv_spi.h" -#include "fsl_common.h" +#include "fsl_common.h" #include "fsl_iocon.h" #include "fsl_spi.h" @@ -25,23 +25,23 @@ static uint32_t get_spi_freq(SPI_Type *base) { freq = CLOCK_GetFreq(kCLOCK_Flexcomm2); } -#endif +#endif - return freq; + return freq; } static rt_err_t spi_init(SPI_Type *base, struct rt_spi_configuration *cfg) { spi_master_config_t masterConfig = {0}; - RT_ASSERT(cfg != RT_NULL); + RT_ASSERT(cfg != RT_NULL); if(cfg->data_width != 8 && cfg->data_width != 16) { - return (-RT_EINVAL); + return (-RT_EINVAL); } - SPI_MasterGetDefaultConfig(&masterConfig); + SPI_MasterGetDefaultConfig(&masterConfig); if(cfg->max_hz > 12*1000*1000) { @@ -51,124 +51,124 @@ static rt_err_t spi_init(SPI_Type *base, struct rt_spi_configuration *cfg) if(cfg->data_width == 8) { - masterConfig.dataWidth = kSPI_Data8Bits; + masterConfig.dataWidth = kSPI_Data8Bits; } else if(cfg->data_width == 16) { - masterConfig.dataWidth = kSPI_Data16Bits; + masterConfig.dataWidth = kSPI_Data16Bits; } if(cfg->mode & RT_SPI_MSB) { - masterConfig.direction = kSPI_MsbFirst; + masterConfig.direction = kSPI_MsbFirst; } else { - masterConfig.direction = kSPI_LsbFirst; + masterConfig.direction = kSPI_LsbFirst; } if(cfg->mode & RT_SPI_CPHA) { - masterConfig.phase = kSPI_ClockPhaseSecondEdge; + masterConfig.phase = kSPI_ClockPhaseSecondEdge; } else { - masterConfig.phase = kSPI_ClockPhaseFirstEdge; + masterConfig.phase = kSPI_ClockPhaseFirstEdge; } if(cfg->mode & RT_SPI_CPOL) { - masterConfig.polarity = kSPI_ClockPolarityActiveLow; + masterConfig.polarity = kSPI_ClockPolarityActiveLow; } else { - masterConfig.polarity = kSPI_ClockPolarityActiveHigh; + masterConfig.polarity = kSPI_ClockPolarityActiveHigh; } - masterConfig.txWatermark = kSPI_TxFifo0, - masterConfig.rxWatermark = kSPI_RxFifo1, - - // masterConfig.sselNum = kSPI_Ssel3; - SPI_MasterInit(base, &masterConfig, get_spi_freq(base)); + masterConfig.txWatermark = kSPI_TxFifo0, + masterConfig.rxWatermark = kSPI_RxFifo1, + + // masterConfig.sselNum = kSPI_Ssel3; + SPI_MasterInit(base, &masterConfig, get_spi_freq(base)); - return RT_EOK; + return RT_EOK; } rt_err_t lpc_spi_bus_attach_device(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 lpc_sw_spi_cs *cs_pin = (struct lpc_sw_spi_cs *)rt_malloc(sizeof(struct lpc_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 lpc_sw_spi_cs *cs_pin = (struct lpc_sw_spi_cs *)rt_malloc(sizeof(struct lpc_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 rt_err_t configure(struct rt_spi_device *device, struct rt_spi_configuration *cfg) { - rt_err_t ret = RT_EOK; - struct lpc_spi *spi = RT_NULL; - + rt_err_t ret = RT_EOK; + struct lpc_spi *spi = RT_NULL; + RT_ASSERT(cfg != RT_NULL); RT_ASSERT(device != RT_NULL); - - spi = (struct lpc_spi *)(device->bus->parent.user_data); - spi->cfg = cfg; - ret = spi_init(spi->base, cfg); - + + spi = (struct lpc_spi *)(device->bus->parent.user_data); + spi->cfg = cfg; + ret = spi_init(spi->base, cfg); + return ret; } static rt_uint32_t spixfer(struct rt_spi_device *device, struct rt_spi_message *message) { - spi_transfer_t transfer = {0}; - + spi_transfer_t transfer = {0}; + RT_ASSERT(device != RT_NULL); RT_ASSERT(device->bus != RT_NULL); RT_ASSERT(device->bus->parent.user_data != RT_NULL); - - struct lpc_spi *spi = (struct lpc_spi *)(device->bus->parent.user_data); - struct lpc_sw_spi_cs *cs = device->parent.user_data; - + + struct lpc_spi *spi = (struct lpc_spi *)(device->bus->parent.user_data); + struct lpc_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); transfer.configFlags |= kSPI_FrameAssert; - - SPI_MasterTransferBlocking(spi->base, &transfer); - + + SPI_MasterTransferBlocking(spi->base, &transfer); + if(message->cs_release) { rt_pin_write(cs->pin, PIN_HIGH); } - - return message->length; + + return message->length; } #if defined(BSP_USING_SPI2) -static struct lpc_spi spi2 = {0}; -static struct rt_spi_bus spi2_bus = {0}; +static struct lpc_spi spi2 = {0}; +static struct rt_spi_bus spi2_bus = {0}; #endif -static struct rt_spi_ops lpc_spi_ops = +static struct rt_spi_ops lpc_spi_ops = { - configure, + configure, spixfer -}; +}; int rt_hw_spi_init(void) { @@ -178,17 +178,17 @@ int rt_hw_spi_init(void) CLOCK_AttachClk(kFRO12M_to_FLEXCOMM2); RESET_PeripheralReset(kFC2_RST_SHIFT_RSTn); - spi2.base = SPI2; - spi2.cfg = RT_NULL; - spi2_bus.parent.user_data = &spi2; - + spi2.base = SPI2; + spi2.cfg = RT_NULL; + spi2_bus.parent.user_data = &spi2; + IOCON_PinMuxSet(IOCON, 0, 8, (IOCON_FUNC1 | IOCON_MODE_PULLUP | IOCON_GPIO_MODE | IOCON_DIGITAL_EN)); /* SPI2_MOSI */ IOCON_PinMuxSet(IOCON, 0, 9, (IOCON_FUNC1 | IOCON_MODE_PULLUP | IOCON_GPIO_MODE | IOCON_DIGITAL_EN)); /* SPI2_MISO */ IOCON_PinMuxSet(IOCON, 0, 10, (IOCON_FUNC1 | IOCON_MODE_PULLUP | IOCON_GPIO_MODE | IOCON_DIGITAL_EN)); /* SPI2_SCK */ - rt_spi_bus_register(&spi2_bus, "spi2", &lpc_spi_ops); + rt_spi_bus_register(&spi2_bus, "spi2", &lpc_spi_ops); #endif - return RT_EOK; + return RT_EOK; } -INIT_BOARD_EXPORT(rt_hw_spi_init); +INIT_BOARD_EXPORT(rt_hw_spi_init); |
