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- /*
- * Copyright (C) 2018 Shanghai Eastsoft Microelectronics Co., Ltd.
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Licensed under the Apache License, Version 2.0 (the License); you may
- * not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an AS IS BASIS, WITHOUT
- * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * Change Logs:
- * Date Author Notes
- * 2019-11-01 wangyq update libraries
- * 2020-01-14 wangyq the first version
- * 2021-04-20 liuhy the second version
- */
- #include <rtthread.h>
- #include <rtdevice.h>
- #include <string.h>
- #include <rthw.h>
- #include "board.h"
- #include "drv_spi.h"
- #ifdef RT_USING_SPI
- #define SPITIMEOUT 0xFFFF
- rt_err_t spi_configure(struct rt_spi_device *device,
- struct rt_spi_configuration *cfg)
- {
- spi_handle_t *hspi;
- hspi = (spi_handle_t *)device->bus->parent.user_data;
- hspi->init.ss_en = DISABLE;
- hspi->init.crc_calc = DISABLE;
- hspi->init.frame = SPI_FRAME_MOTOROLA;
- /* config spi mode */
- if (cfg->mode & RT_SPI_SLAVE)
- {
- hspi->init.mode = SPI_MODE_SLAVER;
- }
- else
- {
- hspi->init.mode = SPI_MODE_MASTER;
- }
- if (cfg->mode & RT_SPI_3WIRE)
- {
- hspi->init.dir = SPI_DIRECTION_1LINE;
- }
- else
- {
- hspi->init.dir = SPI_DIRECTION_2LINES;
- }
- if (cfg->data_width == 8)
- {
- hspi->init.data_size = SPI_DATA_SIZE_8;
- }
- else if (cfg->data_width == 16)
- {
- hspi->init.data_size = SPI_DATA_SIZE_16;
- }
- if (cfg->mode & RT_SPI_CPHA)
- {
- hspi->init.phase = SPI_CPHA_SECOND;
- }
- else
- {
- hspi->init.phase = SPI_CPHA_FIRST;
- }
- if (cfg->mode & RT_SPI_MSB)
- {
- hspi->init.first_bit = SPI_FIRSTBIT_MSB;
- }
- else
- {
- hspi->init.first_bit = SPI_FIRSTBIT_LSB;
- }
- if (cfg->mode & RT_SPI_CPOL)
- {
- hspi->init.polarity = SPI_CPOL_HIGH;
- }
- else
- {
- hspi->init.polarity = SPI_CPOL_LOW;
- }
- if (cfg->mode & RT_SPI_NO_CS)
- {
- hspi->init.ss_en = DISABLE;
- }
- else
- {
- hspi->init.ss_en = ENABLE;
- }
- /* config spi clock */
- if (cfg->max_hz >= ald_cmu_get_pclk1_clock() / 2)
- {
- /* pclk1 max speed 48MHz, spi master max speed 10MHz */
- if (ald_cmu_get_pclk1_clock() / 2 <= 10000000)
- {
- hspi->init.baud = SPI_BAUD_2;
- }
- else if (ald_cmu_get_pclk1_clock() / 4 <= 10000000)
- {
- hspi->init.baud = SPI_BAUD_4;
- }
- else
- {
- hspi->init.baud = SPI_BAUD_8;
- }
- }
- else if (cfg->max_hz >= ald_cmu_get_pclk1_clock() / 4)
- {
- /* pclk1 max speed 48MHz, spi master max speed 10MHz */
- if (ald_cmu_get_pclk1_clock() / 4 <= 10000000)
- {
- hspi->init.baud = SPI_BAUD_4;
- }
- else
- {
- hspi->init.baud = SPI_BAUD_8;
- }
- }
- else if (cfg->max_hz >= ald_cmu_get_pclk1_clock() / 8)
- {
- hspi->init.baud = SPI_BAUD_8;
- }
- else if (cfg->max_hz >= ald_cmu_get_pclk1_clock() / 16)
- {
- hspi->init.baud = SPI_BAUD_16;
- }
- else if (cfg->max_hz >= ald_cmu_get_pclk1_clock() / 32)
- {
- hspi->init.baud = SPI_BAUD_32;
- }
- else if (cfg->max_hz >= ald_cmu_get_pclk1_clock() / 64)
- {
- hspi->init.baud = SPI_BAUD_64;
- }
- else if (cfg->max_hz >= ald_cmu_get_pclk1_clock() / 128)
- {
- hspi->init.baud = SPI_BAUD_128;
- }
- else
- {
- hspi->init.baud = SPI_BAUD_256;
- }
- ald_spi_init(hspi);
- return RT_EOK;
- }
- static rt_ssize_t spixfer(struct rt_spi_device *device, struct rt_spi_message *message)
- {
- rt_err_t res;
- spi_handle_t *hspi;
- struct es32f3_hw_spi_cs *cs;
- RT_ASSERT(device != RT_NULL);
- RT_ASSERT(device->bus != RT_NULL);
- RT_ASSERT(device->bus->parent.user_data != RT_NULL);
- hspi = (spi_handle_t *)device->bus->parent.user_data;
- cs = device->parent.user_data;
- if (message->cs_take)
- {
- rt_pin_write(cs->pin, ES_SPI_CS_LEVEL);
- }
- if(message->send_buf != RT_NULL || message->recv_buf != RT_NULL)
- {
- /* send & receive */
- if ((message->send_buf != RT_NULL) && (message->recv_buf != RT_NULL))
- {
- res = ald_spi_send_recv(hspi, (rt_uint8_t *)message->send_buf, (rt_uint8_t *)message->recv_buf,
- (rt_int32_t)message->length, SPITIMEOUT);
- }
- else
- {
- /* only send data */
- if (message->recv_buf == RT_NULL)
- {
- res = ald_spi_send(hspi, (rt_uint8_t *)message->send_buf, (rt_int32_t)message->length, SPITIMEOUT);
- }
- /* only receive data */
- if (message->send_buf == RT_NULL)
- {
- res = ald_spi_recv(hspi, (rt_uint8_t *)message->recv_buf, (rt_int32_t)message->length, SPITIMEOUT);
- }
- }
- if (message->cs_release)
- {
- rt_pin_write(cs->pin, !ES_SPI_CS_LEVEL);
- }
- if (res != RT_EOK)
- return -RT_ERROR;
- else
- return message->length;
- }
- else
- {
- if (message->cs_release)
- {
- rt_pin_write(cs->pin, !ES_SPI_CS_LEVEL);
- }
- return RT_EOK;
- }
- }
- const struct rt_spi_ops es32f3_spi_ops =
- {
- spi_configure,
- spixfer,
- };
- rt_err_t es32f3_spi_device_attach(rt_uint32_t pin, const char *bus_name, const char *device_name)
- {
- int result;
- /* define spi Instance */
- struct rt_spi_device *spi_device = (struct rt_spi_device *)rt_malloc(sizeof(struct rt_spi_device));
- RT_ASSERT(spi_device != RT_NULL);
- struct es32f3_hw_spi_cs *cs_pin = (struct es32f3_hw_spi_cs *)rt_malloc(sizeof(struct es32f3_hw_spi_cs));
- RT_ASSERT(cs_pin != RT_NULL);
- cs_pin->pin = pin;
- rt_pin_mode(pin, PIN_MODE_OUTPUT);
- rt_pin_write(pin, 1);
- result = rt_spi_bus_attach_device(spi_device, device_name, bus_name, (void *)cs_pin);
- #ifdef BSP_USING_SPI0
- if(!(strcmp(bus_name,ES_DEVICE_NAME_SPI0_BUS)))SPI_BUS_CONFIG(spi_device->config,0);
- #endif
- #ifdef BSP_USING_SPI1
- if(!(strcmp(bus_name,ES_DEVICE_NAME_SPI1_BUS)))SPI_BUS_CONFIG(spi_device->config,1);
- #endif
- #ifdef BSP_USING_SPI2
- if(!(strcmp(bus_name,ES_DEVICE_NAME_SPI2_BUS)))SPI_BUS_CONFIG(spi_device->config,2);
- #endif
- return result;
- }
- #ifdef BSP_USING_SPI0
- static struct rt_spi_bus _spi_bus0;
- static spi_handle_t _spi0;
- #endif
- #ifdef BSP_USING_SPI1
- static struct rt_spi_bus _spi_bus1;
- static spi_handle_t _spi1;
- #endif
- #ifdef BSP_USING_SPI2
- static struct rt_spi_bus _spi_bus2;
- static spi_handle_t _spi2;
- #endif
- int rt_hw_spi_init(void)
- {
- int result = RT_EOK;
- struct rt_spi_bus *spi_bus;
- spi_handle_t *spi;
- gpio_init_t gpio_instruct;
- gpio_instruct.pupd = GPIO_PUSH_UP_DOWN;
- gpio_instruct.odos = GPIO_PUSH_PULL;
- gpio_instruct.podrv = GPIO_OUT_DRIVE_6;
- gpio_instruct.nodrv = GPIO_OUT_DRIVE_6;
- gpio_instruct.type = GPIO_TYPE_TTL;
- gpio_instruct.flt = GPIO_FILTER_DISABLE;
- #ifdef BSP_USING_SPI0
- _spi0.perh = SPI0;
- spi_bus = &_spi_bus0;
- spi = &_spi0;
- /* SPI0 gpio init */
- gpio_instruct.mode = GPIO_MODE_OUTPUT;
- #if defined(ES_SPI0_SCK_GPIO_FUNC)&&defined(ES_SPI0_SCK_GPIO_PORT)&&defined(ES_SPI0_SCK_GPIO_PIN)
- gpio_instruct.func = ES_SPI0_SCK_GPIO_FUNC;
- ald_gpio_init(ES_SPI0_SCK_GPIO_PORT, ES_SPI0_SCK_GPIO_PIN, &gpio_instruct);
- #endif
- #if defined(ES_SPI0_MOSI_GPIO_FUNC)&&defined(ES_SPI0_MOSI_GPIO_PORT)&&defined(ES_SPI0_MOSI_GPIO_PIN)
- gpio_instruct.func = ES_SPI0_MOSI_GPIO_FUNC;
- ald_gpio_init(ES_SPI0_MOSI_GPIO_PORT, ES_SPI0_MOSI_GPIO_PIN, &gpio_instruct);
- #endif
- gpio_instruct.mode = GPIO_MODE_INPUT;
- #if defined(ES_SPI0_MISO_GPIO_FUNC)&&defined(ES_SPI0_MISO_GPIO_PORT)&&defined(ES_SPI0_MISO_GPIO_PIN)
- gpio_instruct.func = ES_SPI0_MISO_GPIO_FUNC;
- ald_gpio_init(ES_SPI0_MISO_GPIO_PORT, ES_SPI0_MISO_GPIO_PIN, &gpio_instruct);
- #endif
- spi_bus->parent.user_data = spi;
- result = rt_spi_bus_register(spi_bus, ES_DEVICE_NAME_SPI0_BUS, &es32f3_spi_ops);
- if (result != RT_EOK)
- {
- return result;
- }
- result = es32f3_spi_device_attach(ES_SPI0_NSS_PIN, ES_DEVICE_NAME_SPI0_BUS, ES_DEVICE_NAME_SPI0_DEV0);
- if (result != RT_EOK)
- {
- return result;
- }
- #endif
- #ifdef BSP_USING_SPI1
- _spi1.perh = SPI1;
- spi_bus = &_spi_bus1;
- spi = &_spi1;
- /* SPI1 gpio init */
- gpio_instruct.mode = GPIO_MODE_OUTPUT;
- #if defined(ES_SPI1_SCK_GPIO_FUNC)&&defined(ES_SPI1_SCK_GPIO_PORT)&&defined(ES_SPI1_SCK_GPIO_PIN)
- gpio_instruct.func = ES_SPI1_SCK_GPIO_FUNC;
- ald_gpio_init(ES_SPI1_SCK_GPIO_PORT, ES_SPI1_SCK_GPIO_PIN, &gpio_instruct);
- #endif
- #if defined(ES_SPI1_MOSI_GPIO_FUNC)&&defined(ES_SPI1_MOSI_GPIO_PORT)&&defined(ES_SPI1_MOSI_GPIO_PIN)
- gpio_instruct.func = ES_SPI1_MOSI_GPIO_FUNC;
- ald_gpio_init(ES_SPI1_MOSI_GPIO_PORT, ES_SPI1_MOSI_GPIO_PIN, &gpio_instruct);
- #endif
- gpio_instruct.mode = GPIO_MODE_INPUT;
- #if defined(ES_SPI1_MISO_GPIO_FUNC)&&defined(ES_SPI1_MISO_GPIO_PORT)&&defined(ES_SPI1_MISO_GPIO_PIN)
- gpio_instruct.func = ES_SPI1_MISO_GPIO_FUNC;
- ald_gpio_init(ES_SPI1_MISO_GPIO_PORT, ES_SPI1_MISO_GPIO_PIN, &gpio_instruct);
- #endif
- spi_bus->parent.user_data = spi;
- result = rt_spi_bus_register(spi_bus, ES_DEVICE_NAME_SPI1_BUS, &es32f3_spi_ops);
- if (result != RT_EOK)
- {
- return result;
- }
- result = es32f3_spi_device_attach(ES_SPI1_NSS_PIN, ES_DEVICE_NAME_SPI1_BUS, ES_DEVICE_NAME_SPI1_DEV0);
- if (result != RT_EOK)
- {
- return result;
- }
- #endif
- #ifdef BSP_USING_SPI2
- _spi2.perh = SPI2;
- spi_bus = &_spi_bus2;
- spi = &_spi2;
- /* SPI2 gpio init */
- gpio_instruct.mode = GPIO_MODE_OUTPUT;
- #if defined(ES_SPI2_SCK_GPIO_FUNC)&&defined(ES_SPI2_SCK_GPIO_PORT)&&defined(ES_SPI2_SCK_GPIO_PIN)
- gpio_instruct.func = ES_SPI2_SCK_GPIO_FUNC;
- ald_gpio_init(ES_SPI2_SCK_GPIO_PORT, ES_SPI2_SCK_GPIO_PIN, &gpio_instruct);
- #endif
- #if defined(ES_SPI2_MOSI_GPIO_FUNC)&&defined(ES_SPI2_MOSI_GPIO_PORT)&&defined(ES_SPI2_MOSI_GPIO_PIN)
- gpio_instruct.func = ES_SPI2_MOSI_GPIO_FUNC;
- ald_gpio_init(ES_SPI2_MOSI_GPIO_PORT, ES_SPI2_MOSI_GPIO_PIN, &gpio_instruct);
- #endif
- gpio_instruct.mode = GPIO_MODE_INPUT;
- #if defined(ES_SPI2_MISO_GPIO_FUNC)&&defined(ES_SPI2_MISO_GPIO_PORT)&&defined(ES_SPI2_MISO_GPIO_PIN)
- gpio_instruct.func = ES_SPI2_MISO_GPIO_FUNC;
- ald_gpio_init(ES_SPI2_MISO_GPIO_PORT, ES_SPI2_MISO_GPIO_PIN, &gpio_instruct);
- #endif
- spi_bus->parent.user_data = spi;
- result = rt_spi_bus_register(spi_bus, ES_DEVICE_NAME_SPI2_BUS, &es32f3_spi_ops);
- if (result != RT_EOK)
- {
- return result;
- }
- result = es32f3_spi_device_attach(ES_SPI2_NSS_PIN, ES_DEVICE_NAME_SPI2_BUS, ES_DEVICE_NAME_SPI1_DEV0);
- if (result != RT_EOK)
- {
- return result;
- }
- #endif
- return result;
- }
- INIT_BOARD_EXPORT(rt_hw_spi_init);
- #endif
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