52 lines
970 B
C++
52 lines
970 B
C++
#ifndef _UART_HH_
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#define _UART_HH_
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#include <cstdint>
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#include <memory>
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class OMAP35x_prcm;
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class ICharacterDevice {
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public:
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virtual void write(char const* data, int const& len) = 0;
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virtual int read(char *buf, int const& len) = 0;
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};
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class UART_impl;
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class UART : public ICharacterDevice {
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public:
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UART(uintptr_t base, int irq, OMAP35x_prcm& prcm);
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~UART();
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virtual void write(char const* data, int const& len);
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virtual int read(char *buf, int const& len);
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private:
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std::unique_ptr<UART_impl> impl_;
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};
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class EarlyUART : public ICharacterDevice {
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public:
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EarlyUART() {}
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~EarlyUART() {}
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virtual void write(char const* data, int const& len);
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virtual int read(char *buf, int const& len);
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private:
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void _wait_txnotfull();
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void _wait_rxnotempty();
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void sendb(char b);
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char recvb();
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uint8_t volatile& r_data();
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uint8_t volatile& r_lsr();
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uint8_t volatile& r_ssr();
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static const uintptr_t base_ = 0xfffff000;
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};
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#endif
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