hm
cbad06d616
- 将 touch 底层从软件 I2C 位冲切换为硬件 I2C0 (PB6/PB7) - 修复 i2c_driver I2C0 引脚映射 (PB8/PB9 -> PB6/PB7) - 重写 master_write_read() 实现正确的重复起始条件 - 添加 i2c_driver.h C API 声明供 C 代码调用 - 添加 GT1151 EXTI 中断 (PD11, EXTI11 下降沿触发) - 删除 touch.h 中废弃的软件 I2C 函数声明 - test_touch() 改为中断驱动，无触摸时 I2C 总线空闲
63 lines
1.4 KiB
C++
63 lines
1.4 KiB
C++
#ifndef __I2C_DRIVER_H__
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#define __I2C_DRIVER_H__
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#include <cstdint>
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#include "bus_core.h"
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enum class I2cPort : uint8_t {
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_0 = 0,
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_1, _2,
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MAX
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};
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struct I2cConfig {
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uint32_t speed_hz = 100000;
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};
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class I2cDevice {
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public:
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explicit I2cDevice(uint16_t dev_addr);
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RetCode init();
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uint16_t addr() const { return dev_addr_; }
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private:
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friend class I2cBus;
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uint16_t dev_addr_;
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};
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class I2cBus {
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public:
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explicit I2cBus(I2cPort port);
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~I2cBus();
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I2cBus(const I2cBus &) = delete;
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I2cBus &operator=(const I2cBus &) = delete;
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RetCode init(const I2cConfig &config);
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RetCode deinit();
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RetCode master_write(I2cDevice &dev, const uint8_t *data, uint32_t len);
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RetCode master_read(I2cDevice &dev, uint8_t *data, uint32_t len);
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RetCode master_write_read(I2cDevice &dev, const uint8_t *wdata, uint32_t wlen, uint8_t *rdata, uint32_t rlen);
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private:
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I2cPort port_;
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I2cConfig config_;
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bool initialized_ = false;
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};
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#ifdef __cplusplus
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extern "C" {
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#endif
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int i2c_init(uint8_t port, uint32_t speed_hz);
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int i2c_master_write(uint8_t port, uint16_t dev_addr, const uint8_t *data, uint32_t len);
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int i2c_master_read(uint8_t port, uint16_t dev_addr, uint8_t *data, uint32_t len);
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int i2c_master_write_read(uint8_t port, uint16_t dev_addr, const uint8_t *wdata, uint32_t wlen, uint8_t *rdata, uint32_t rlen);
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#ifdef __cplusplus
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}
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#endif
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#endif
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