52 lines
887 B
C++
52 lines
887 B
C++
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#ifndef __SPI_DRIVER_H__
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#define __SPI_DRIVER_H__
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#include <cstdint>
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#include "bus_core.h"
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enum class SpiPort : uint8_t {
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_0 = 0,
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_1, _2, _3, _4, _5,
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MAX
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};
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struct SpiConfig {
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uint32_t speed_hz = 1000000;
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uint8_t data_width = 8;
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uint8_t mode = 0;
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};
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class SpiBus;
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class SpiDevice {
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public:
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SpiDevice(uint32_t cs_port, uint32_t cs_pin);
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RetCode init();
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private:
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friend class SpiBus;
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uint32_t cs_port_;
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uint32_t cs_pin_;
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bool initialized_ = false;
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};
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class SpiBus {
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public:
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explicit SpiBus(SpiPort port);
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~SpiBus();
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SpiBus(const SpiBus &) = delete;
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SpiBus &operator=(const SpiBus &) = delete;
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RetCode init(const SpiConfig &config);
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RetCode deinit();
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RetCode transfer(SpiDevice *device, BusTransfer *transfer);
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private:
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SpiPort port_;
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SpiConfig config_;
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bool initialized_ = false;
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};
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#endif
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