90 lines
2.5 KiB
C
90 lines
2.5 KiB
C
/*
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* File : gd32f20x_40x_spi.c
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* This file is part of RT-Thread RTOS
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* COPYRIGHT (C) 2009 RT-Thread Develop Team
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rt-thread.org/license/LICENSE
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*
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* Change Logs:
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* Date Author Notes
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* 2012-01-01 aozima first implementation.
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* 2012-07-27 aozima fixed variable uninitialized.
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*/
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#include <board.h>
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#include "drv_spi.h"
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#include "spi_flash.h"
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#ifdef RT_USING_SFUD
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#include "spi_flash_sfud.h"
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#endif
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#include <rthw.h>
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#include <finsh.h>
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#define SPI_PERIPH SPI5
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#define SPI_BUS_NAME "spi5"
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#define SPI_FLASH_DEVICE_NAME "spi50"
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#define SPI_FLASH_CHIP "gd25q16"
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static int rt_hw_spi5_init(void)
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{
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/* register spi bus */
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{
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rt_err_t result;
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rcu_periph_clock_enable(RCU_GPIOG);
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rcu_periph_clock_enable(RCU_SPI5);
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/* SPI5_CLK(PG13), SPI5_MISO(PG12), SPI5_MOSI(PG14),SPI5_IO2(PG10) and SPI5_IO3(PG11) GPIO pin configuration */
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gpio_af_set(GPIOG, GPIO_AF_5, GPIO_PIN_10|GPIO_PIN_11| GPIO_PIN_12|GPIO_PIN_13| GPIO_PIN_14);
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gpio_mode_set(GPIOG, GPIO_MODE_AF, GPIO_PUPD_NONE, GPIO_PIN_10|GPIO_PIN_11| GPIO_PIN_12|GPIO_PIN_13| GPIO_PIN_14);
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gpio_output_options_set(GPIOG, GPIO_OTYPE_PP, GPIO_OSPEED_200MHZ, GPIO_PIN_10|GPIO_PIN_11| GPIO_PIN_12|GPIO_PIN_13| GPIO_PIN_14);
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result = gd32_spi_bus_register(SPI5, SPI_BUS_NAME);
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if (result != RT_EOK)
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{
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return result;
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}
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}
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/* attach cs */
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{
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static struct rt_spi_device spi_device;
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static struct gd32_spi_cs spi_cs;
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rt_err_t result;
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spi_cs.GPIOx = GPIOG;
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spi_cs.GPIO_Pin = GPIO_PIN_9;
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/* SPI5_CS(PG9) GPIO pin configuration */
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gpio_mode_set(GPIOG, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, GPIO_PIN_9);
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gpio_output_options_set(GPIOG, GPIO_OTYPE_PP, GPIO_OSPEED_50MHZ, GPIO_PIN_9);
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gpio_bit_set(GPIOG,GPIO_PIN_9);
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result = rt_spi_bus_attach_device(&spi_device, SPI_FLASH_DEVICE_NAME, SPI_BUS_NAME, (void*)&spi_cs);
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if (result != RT_EOK)
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{
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return result;
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}
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}
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return RT_EOK;
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}
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INIT_DEVICE_EXPORT(rt_hw_spi5_init);
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#ifdef RT_USING_SFUD
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static int rt_hw_spi_flash_with_sfud_init(void)
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{
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if (RT_NULL == rt_sfud_flash_probe(SPI_FLASH_CHIP, SPI_FLASH_DEVICE_NAME))
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{
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return RT_ERROR;
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};
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return RT_EOK;
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}
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INIT_COMPONENT_EXPORT(rt_hw_spi_flash_with_sfud_init)
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#endif
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