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- /*
- * Copyright (c) 2006-2022, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date Author Notes
- * 2021-12-15 JasonHu first version
- */
- #include <rtthread.h>
- #include <rthw.h>
- #include <rtdevice.h>
- #include "drv_spi.h"
- #define DBG_TAG "DRV.SPI"
- #define DBG_LVL DBG_LOG
- #include <rtdbg.h>
- #include <sunxi_hal_spi.h>
- #ifdef BSP_USING_SPI
- struct hw_spi_bus
- {
- struct rt_spi_bus parent;
- hal_spi_master_port_t port;
- };
- #define BSP_SPI_MAX_HZ SPI_MAX_FREQUENCY
- #if defined (BSP_USING_SPI0)
- #define SPI0_BUS_NAME "spi0"
- #define SPI0_BUS_DEVICE0_NAME "spi01"
- struct hw_spi_bus spi0_bus;
- #endif /* BSP_USING_SPI0 */
- #if defined (BSP_USING_SPI1)
- #define SPI1_BUS_NAME "spi1"
- #define SPI1_BUS_DEVICE0_NAME "spi11"
- struct hw_spi_bus spi1_bus;
- #endif /* BSP_USING_SPI1 */
- static rt_err_t hw_spi_configure(struct rt_spi_device *device, struct rt_spi_configuration *cfg)
- {
- RT_ASSERT(cfg != RT_NULL);
- RT_ASSERT(device != RT_NULL);
- struct hw_spi_bus *spi_dev = RT_NULL;
- hal_spi_master_config_t hal_cfg;
- LOG_D("configure mode:%x, clk:%d\n", cfg->mode, cfg->max_hz);
- /* trans cfg to hal cfg */
- spi_dev = (struct hw_spi_bus *)(device->parent.user_data);
- if (cfg->max_hz > BSP_SPI_MAX_HZ)
- cfg->max_hz = BSP_SPI_MAX_HZ;
- /* set default frequency */
- hal_cfg.clock_frequency = cfg->max_hz;
- hal_cfg.slave_port = HAL_SPI_MASTER_SLAVE_0; /* only support slave 0 */
- /* byte order */
- if (cfg->mode & RT_SPI_MSB)
- {
- hal_cfg.bit_order = HAL_SPI_MASTER_MSB_FIRST;
- }
- else
- {
- hal_cfg.bit_order = HAL_SPI_MASTER_LSB_FIRST;
- }
- if(cfg->mode & RT_SPI_CPOL)
- {
- hal_cfg.cpol = HAL_SPI_MASTER_CLOCK_POLARITY1;
- }
- else
- {
- hal_cfg.cpol = HAL_SPI_MASTER_CLOCK_POLARITY0;
- }
- if(cfg->mode & RT_SPI_CPHA)
- {
- hal_cfg.cpha = HAL_SPI_MASTER_CLOCK_PHASE1;
- }
- else
- {
- hal_cfg.cpha = HAL_SPI_MASTER_CLOCK_PHASE0;
- }
- if (cfg->mode & RT_SPI_NO_CS)
- {
- hal_cfg.csmode = HAL_SPI_MASTER_CS_AUTO;
- }
- else
- {
- hal_cfg.csmode = HAL_SPI_MASTER_CS_SOFT;
- }
- if (hal_spi_hw_config(spi_dev->port, &hal_cfg) != SPI_MASTER_OK)
- {
- return -RT_EIO;
- }
- return RT_EOK;
- }
- static rt_uint32_t hw_spi_xfer(struct rt_spi_device *device, struct rt_spi_message *message)
- {
- spi_master_status_t ret = SPI_MASTER_OK;
- hal_spi_master_transfer_t tr;
- struct hw_spi_bus *spi_dev = RT_NULL;
- RT_ASSERT(device != RT_NULL);
- RT_ASSERT(device->bus != RT_NULL);
- RT_ASSERT(device->parent.user_data != RT_NULL);
- spi_dev = (struct hw_spi_bus *)(device->parent.user_data);
- tr.rx_buf = message->recv_buf;
- tr.rx_len = message->recv_buf == RT_NULL ? 0 : message->length;
- tr.tx_buf = message->send_buf;
- tr.tx_len = message->send_buf == RT_NULL ? 0 : message->length;
- tr.dummy_byte = 0;
- tr.tx_single_len = message->send_buf == RT_NULL ? 0 : message->length;
- tr.rx_nbits = SPI_NBITS_SINGLE;
- tr.tx_nbits = SPI_NBITS_SINGLE;
- if (message->cs_take && !(device->config.mode & RT_SPI_NO_CS))
- {
- if (device->config.mode & RT_SPI_CS_HIGH)
- {
- hal_spi_cs(spi_dev->port, 1);
- }
- else
- {
- hal_spi_cs(spi_dev->port, 0);
- }
- }
- if (message->length > 0)
- {
- ret = hal_spi_xfer(spi_dev->port, &tr);
- }
- // FIXME: GCC O3 maybe not execute.
- if (message->cs_release && !(device->config.mode & RT_SPI_NO_CS))
- {
- if (device->config.mode & RT_SPI_CS_HIGH)
- {
- hal_spi_cs(spi_dev->port, 0);
- }
- else
- {
- hal_spi_cs(spi_dev->port, 1);
- }
- }
- if (ret != SPI_MASTER_OK)
- {
- LOG_E("xfer err ret:%ld", ret);
- return -RT_EIO;
- }
- return message->length;
- }
- /**
- * attach a spi device on bus
- */
- rt_err_t rt_hw_spi_device_attach(const char *bus_name, const char *device_name)
- {
- rt_err_t ret = RT_EOK;
- struct hw_spi_bus *hw_spi = RT_NULL;
- struct rt_spi_device *spi_device = (struct rt_spi_device *)rt_malloc(sizeof(struct rt_spi_device));
- RT_ASSERT(spi_device != RT_NULL);
- #ifdef BSP_USING_SPI0
- if (!rt_strcmp(bus_name, SPI0_BUS_NAME))
- {
- hw_spi = &spi0_bus;
- }
- else
- #endif
- #ifdef BSP_USING_SPI1
- if (!rt_strcmp(bus_name, SPI0_BUS_NAME))
- {
- hw_spi = &spi1_bus;
- }
- else
- #endif
- {
- return -RT_EIO;
- }
- /* TODO: attach device */
- ret = rt_spi_bus_attach_device(spi_device, device_name, bus_name, hw_spi);
- return ret;
- }
- static struct rt_spi_ops hw_spi_ops =
- {
- .configure = hw_spi_configure,
- .xfer = hw_spi_xfer
- };
- #endif /* BSP_USING_SPI */
- /* used to init spi bus */
- static hal_spi_master_config_t default_hal_cfg = {
- .bit_order = HAL_SPI_MASTER_MSB_FIRST,
- .clock_frequency = 5000000,//SPI_MOD_CLK,
- .cpha = HAL_SPI_MASTER_CLOCK_PHASE0,
- .cpol = HAL_SPI_MASTER_CLOCK_POLARITY0,
- .slave_port = HAL_SPI_MASTER_SLAVE_0,
- .csmode = HAL_SPI_MASTER_CS_SOFT,
- };
- int rt_hw_spi_init(void)
- {
- #if defined (BSP_USING_SPI0)
- spi0_bus.port = HAL_SPI_MASTER_0;
- if (hal_spi_init(spi0_bus.port, &default_hal_cfg) != SPI_MASTER_OK)
- {
- LOG_E("hal init %s bus failed!", SPI0_BUS_NAME);
- return -1;
- }
- rt_spi_bus_register(&spi0_bus.parent, SPI0_BUS_NAME, &hw_spi_ops);
- rt_hw_spi_device_attach(SPI0_BUS_NAME, SPI0_BUS_DEVICE0_NAME);
- #endif /* BSP_USING_SPI0 */
- #if defined (BSP_USING_SPI1)
- spi1_bus.port = HAL_SPI_MASTER_1;
- if (hal_spi_init(spi1_bus.port, &default_hal_cfg) != SPI_MASTER_OK)
- {
- LOG_E("hal init %s bus failed!", SPI1_BUS_NAME);
- return -1;
- }
- rt_spi_bus_register(&spi1_bus.parent, SPI1_BUS_NAME, &hw_spi_ops);
- rt_hw_spi_device_attach(SPI1_BUS_NAME, SPI1_BUS_DEVICE0_NAME);
- #endif /* BSP_USING_SPI1 */
- return RT_EOK;
- }
- INIT_DEVICE_EXPORT(rt_hw_spi_init);
- #define CFG_GPIO_PORT(p) ((p) - 'A' + 1)
- int32_t hal_spi_gpio_cfg_count(const char *secname)
- {
- return 4;
- }
- static const user_gpio_set_t _spi_gpio_cfg[][4] = {
- {// spi0
- {
- .gpio_name = "spi0_sclk",
- .port = CFG_GPIO_PORT('C'),
- .port_num = 2, // PC02
- .mul_sel = 2,
- .pull = 0, // no pull
- .drv_level = 3,
- .data = 0,
- },
- {
- .gpio_name = "spi0_cs",
- .port = CFG_GPIO_PORT('C'),
- .port_num = 3, // PC03
- .mul_sel = 2,
- .pull = 1, // pull up
- .drv_level = 3,
- .data = 0,
- },
- {
- .gpio_name = "spi0_mosi",
- .port = CFG_GPIO_PORT('C'),
- .port_num = 4, // PC04
- .mul_sel = 2,
- .pull = 0, // no pull
- .drv_level = 3,
- .data = 0,
- },
- {
- .gpio_name = "spi0_miso",
- .port = CFG_GPIO_PORT('C'),
- .port_num = 5, // PC05
- .mul_sel = 2,
- .pull = 0, // no pull
- .drv_level = 3,
- .data = 0,
- }
- },
- };
- int hal_spi_gpio_cfg_load(user_gpio_set_t *gpio_cfg, int32_t GPIONum, int id)
- {
- int i;
- if (id > sizeof(_spi_gpio_cfg) / sizeof(_spi_gpio_cfg[0]))
- {
- rt_kprintf("spi id %d>%d\n", id, sizeof(_spi_gpio_cfg) / sizeof(_spi_gpio_cfg[0]));
- return -1;
- }
- /* twi0 */
- for (i = 0; i < GPIONum; i++)
- {
- memcpy(gpio_cfg, &_spi_gpio_cfg[id][i], sizeof(user_gpio_set_t));
- gpio_cfg++;
- }
- return 0;
- }
- /*
- * 程序清单:这是一个 SPI 设备使用例程
- * 例程导出了 spi_w25q_sample 命令到控制终端
- * 命令调用格式:spi_w25q_sample spi10
- * 命令解释:命令第二个参数是要使用的SPI设备名称,为空则使用默认的SPI设备
- * 程序功能:通过SPI设备读取 w25q 的 ID 数据
- */
- #include <rtthread.h>
- #include <rtdevice.h>
- #define SPI_DEVICE_NAME "spi01"
- static void spi_sample(int argc, char *argv[])
- {
- struct rt_spi_device *spi_dev;
- static char cmd[200];
- static char recv_data[200];
- rt_uint8_t id[5] = {0};
- int i;
- rt_err_t err;
- int type;
- type = atoi(argv[1]);
- for (i = 0; i < sizeof(cmd); i++)
- {
- cmd[i] = i + 1;
- }
- /* 查找 spi 设备获取设备句柄 */
- spi_dev = (struct rt_spi_device *)rt_device_find(SPI_DEVICE_NAME);
- if (!spi_dev)
- {
- rt_kprintf("spi sample run failed! can't find %s device!\n", SPI_DEVICE_NAME);
- }
- else
- {
- struct rt_spi_configuration spi_cfg;
- spi_cfg.max_hz = 5000000;
- spi_cfg.mode = RT_SPI_MODE_0 | RT_SPI_MSB;
- spi_cfg.data_width = 8;
- rt_spi_configure(spi_dev, &spi_cfg);
- if (type == 1)
- {
- err = rt_spi_transfer(spi_dev, cmd, recv_data, sizeof(recv_data));
- }
- else if (type == 2)
- {
- err = rt_spi_send_then_recv(spi_dev, cmd, sizeof(cmd), recv_data, sizeof(recv_data));
- }
- else if (type == 3)
- {
- err = rt_spi_send(spi_dev, cmd, sizeof(cmd));
- }
- else if (type == 4)
- {
- err = rt_spi_send_then_send(spi_dev, cmd, sizeof(cmd), cmd, sizeof(cmd));
- }
- else if (type == 5)
- {
- err = rt_spi_recv(spi_dev, recv_data, sizeof(recv_data));
- }
- // err = rt_spi_send(spi_dev, cmd, sizeof(cmd));
- if (err != sizeof(cmd))
- {
- rt_kprintf("spi send error:%d\n", err);
- }
- }
- }
- /* 导出到 msh 命令列表中 */
- MSH_CMD_EXPORT(spi_sample, spi w25q sample);
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