|
@@ -1,207 +0,0 @@
|
|
|
-/*
|
|
|
- * Copyright (C) 2020, Huada Semiconductor Co., Ltd.
|
|
|
- *
|
|
|
- * SPDX-License-Identifier: Apache-2.0
|
|
|
- *
|
|
|
- * Change Logs:
|
|
|
- * Date Author Notes
|
|
|
- * 2020-10-30 CDT first version
|
|
|
- * 2021-01-18 CDT modify i2c gpio init
|
|
|
- */
|
|
|
-
|
|
|
-/*******************************************************************************
|
|
|
- * Include files
|
|
|
- ******************************************************************************/
|
|
|
-#include "drv_soft_i2c.h"
|
|
|
-#include "board.h"
|
|
|
-
|
|
|
-#if defined RT_USING_I2C
|
|
|
-
|
|
|
-#if !defined(BSP_USING_I2C1) && !defined(BSP_USING_I2C2) && \
|
|
|
- !defined(BSP_USING_I2C3) && !defined(BSP_USING_I2C4) && \
|
|
|
- !defined(BSP_USING_I2C5) && !defined(BSP_USING_I2C6)
|
|
|
-#error "Please define at least one BSP_USING_I2Cx"
|
|
|
-#endif
|
|
|
-
|
|
|
-/*******************************************************************************
|
|
|
- * Local type definitions ('typedef')
|
|
|
- ******************************************************************************/
|
|
|
-
|
|
|
-/*******************************************************************************
|
|
|
- * Local pre-processor symbols/macros ('#define')
|
|
|
- ******************************************************************************/
|
|
|
-
|
|
|
-/*******************************************************************************
|
|
|
- * Global variable definitions (declared in header file with 'extern')
|
|
|
- ******************************************************************************/
|
|
|
-
|
|
|
-/*******************************************************************************
|
|
|
- * Local function prototypes ('static')
|
|
|
- ******************************************************************************/
|
|
|
-
|
|
|
-/*******************************************************************************
|
|
|
- * Local variable definitions ('static')
|
|
|
- ******************************************************************************/
|
|
|
-
|
|
|
-static const struct hc32_soft_i2c_config soft_i2c_config[] =
|
|
|
-{
|
|
|
-#ifdef BSP_USING_I2C1
|
|
|
- I2C1_BUS_CONFIG,
|
|
|
-#endif
|
|
|
-#ifdef BSP_USING_I2C2
|
|
|
- I2C2_BUS_CONFIG,
|
|
|
-#endif
|
|
|
-#ifdef BSP_USING_I2C3
|
|
|
- I2C3_BUS_CONFIG,
|
|
|
-#endif
|
|
|
-#ifdef BSP_USING_I2C4
|
|
|
- I2C4_BUS_CONFIG,
|
|
|
-#endif
|
|
|
-#ifdef BSP_USING_I2C5
|
|
|
- I2C5_BUS_CONFIG,
|
|
|
-#endif
|
|
|
-#ifdef BSP_USING_I2C6
|
|
|
- I2C6_BUS_CONFIG,
|
|
|
-#endif
|
|
|
-};
|
|
|
-
|
|
|
-static struct hc32_i2c i2c_obj[sizeof(soft_i2c_config) / sizeof(soft_i2c_config[0])];
|
|
|
-
|
|
|
-/*******************************************************************************
|
|
|
- * Function implementation - global ('extern') and local ('static')
|
|
|
- ******************************************************************************/
|
|
|
-/**
|
|
|
- * This function initializes the i2c pin.
|
|
|
- *
|
|
|
- * @param Hc32 i2c dirver class.
|
|
|
- */
|
|
|
-static void hc32_i2c_gpio_init(struct hc32_i2c *i2c)
|
|
|
-{
|
|
|
- struct hc32_soft_i2c_config* cfg = (struct hc32_soft_i2c_config*)i2c->ops.data;
|
|
|
-
|
|
|
- rt_pin_mode(cfg->scl_pin, PIN_MODE_OUTPUT_OD);
|
|
|
- rt_pin_mode(cfg->sda_pin, PIN_MODE_OUTPUT_OD);
|
|
|
-
|
|
|
- rt_pin_write(cfg->scl_pin, PIN_HIGH);
|
|
|
- rt_pin_write(cfg->sda_pin, PIN_HIGH);
|
|
|
-}
|
|
|
-
|
|
|
-/**
|
|
|
- * This function sets the sda pin.
|
|
|
- *
|
|
|
- * @param Hc32 config class.
|
|
|
- * @param The sda pin state.
|
|
|
- */
|
|
|
-static void hc32_set_sda(void *data, rt_int32_t state)
|
|
|
-{
|
|
|
- struct hc32_soft_i2c_config* cfg = (struct hc32_soft_i2c_config*)data;
|
|
|
-
|
|
|
- if (state)
|
|
|
- rt_pin_write(cfg->sda_pin, PIN_HIGH);
|
|
|
- else
|
|
|
- rt_pin_write(cfg->sda_pin, PIN_LOW);
|
|
|
-}
|
|
|
-
|
|
|
-/**
|
|
|
- * This function sets the scl pin.
|
|
|
- *
|
|
|
- * @param Hc32 config class.
|
|
|
- * @param The scl pin state.
|
|
|
- */
|
|
|
-static void hc32_set_scl(void *data, rt_int32_t state)
|
|
|
-{
|
|
|
- struct hc32_soft_i2c_config* cfg = (struct hc32_soft_i2c_config*)data;
|
|
|
-
|
|
|
- if (state)
|
|
|
- rt_pin_write(cfg->scl_pin, PIN_HIGH);
|
|
|
- else
|
|
|
- rt_pin_write(cfg->scl_pin, PIN_LOW);
|
|
|
-}
|
|
|
-
|
|
|
-/**
|
|
|
- * This function gets the sda pin state.
|
|
|
- *
|
|
|
- * @param The sda pin state.
|
|
|
- */
|
|
|
-static rt_int32_t hc32_get_sda(void *data)
|
|
|
-{
|
|
|
- struct hc32_soft_i2c_config* cfg = (struct hc32_soft_i2c_config*)data;
|
|
|
-
|
|
|
- return rt_pin_read(cfg->sda_pin);
|
|
|
-}
|
|
|
-
|
|
|
-/**
|
|
|
- * This function gets the scl pin state.
|
|
|
- *
|
|
|
- * @param The scl pin state.
|
|
|
- */
|
|
|
-static rt_int32_t hc32_get_scl(void *data)
|
|
|
-{
|
|
|
- struct hc32_soft_i2c_config* cfg = (struct hc32_soft_i2c_config*)data;
|
|
|
-
|
|
|
- return rt_pin_read(cfg->scl_pin);
|
|
|
-}
|
|
|
-
|
|
|
-static void hc32_udelay(rt_uint32_t us)
|
|
|
-{
|
|
|
- rt_hw_us_delay(us);
|
|
|
-}
|
|
|
-
|
|
|
-static const struct rt_i2c_bit_ops hc32_bit_ops =
|
|
|
-{
|
|
|
- .data = RT_NULL,
|
|
|
- .set_sda = hc32_set_sda,
|
|
|
- .set_scl = hc32_set_scl,
|
|
|
- .get_sda = hc32_get_sda,
|
|
|
- .get_scl = hc32_get_scl,
|
|
|
- .udelay = hc32_udelay,
|
|
|
- .delay_us = 1,
|
|
|
- .timeout = 100
|
|
|
-};
|
|
|
-
|
|
|
-static rt_err_t hc32_i2c_bus_unlock(const struct hc32_soft_i2c_config *cfg)
|
|
|
-{
|
|
|
- rt_uint32_t i = 0;
|
|
|
-
|
|
|
- if (PIN_LOW == rt_pin_read(cfg->sda_pin))
|
|
|
- {
|
|
|
- while (i++ < 9)
|
|
|
- {
|
|
|
- rt_pin_write(cfg->scl_pin, PIN_HIGH);
|
|
|
- //HC32_udelay(100);
|
|
|
- rt_pin_write(cfg->scl_pin, PIN_LOW);
|
|
|
- //hc32_udelay(100);
|
|
|
- }
|
|
|
- }
|
|
|
- if(PIN_LOW == rt_pin_read(cfg->sda_pin))
|
|
|
- return RT_ERROR;
|
|
|
-
|
|
|
- return RT_EOK;
|
|
|
-}
|
|
|
-
|
|
|
-/* I2C initialization function */
|
|
|
-int hc32_hw_i2c_init(void)
|
|
|
-{
|
|
|
- rt_size_t obj_num = sizeof(i2c_obj) / sizeof(struct hc32_i2c);
|
|
|
- rt_err_t result;
|
|
|
-
|
|
|
- for (int i = 0; i < obj_num; i++)
|
|
|
- {
|
|
|
- i2c_obj[i].ops = hc32_bit_ops;
|
|
|
- i2c_obj[i].ops.data = (void*)&soft_i2c_config[i];
|
|
|
- i2c_obj[i].i2c1_bus.priv = &i2c_obj[i].ops;
|
|
|
- hc32_i2c_gpio_init(&i2c_obj[i]);
|
|
|
- result = rt_i2c_bit_add_bus(&i2c_obj[i].i2c1_bus, soft_i2c_config[i].bus_name);
|
|
|
- RT_ASSERT(result == RT_EOK);
|
|
|
- hc32_i2c_bus_unlock(&soft_i2c_config[i]);
|
|
|
- }
|
|
|
-
|
|
|
- return RT_EOK;
|
|
|
-}
|
|
|
-INIT_BOARD_EXPORT(hc32_hw_i2c_init);
|
|
|
-
|
|
|
-#endif /* RT_USING_I2C */
|
|
|
-
|
|
|
-/*******************************************************************************
|
|
|
- * EOF (not truncated)
|
|
|
- ******************************************************************************/
|