uart.h

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#pragma once
#include <utils/deadline.h>
#include <utils/queue.h>
#include <core/kern.h>
 
#include "gpio.h"
#include "registry.h"
 
namespace UART {
struct HW : public Sink<Buffer<uint8_t>>, public Source<Buffer<uint8_t>> {
    struct Default {
        USART_TypeDef *uart; 
        AFIO rx, tx; 
        uint32_t baudrate; 
    };
    struct Manual {
        USART_TypeDef *uart; 
        AFIO rx, tx; 
        UART_InitTypeDef init; 
    };
    HW(const Default &conf);
    HW(const Manual &conf);
    bool full() override;
    void push(Buffer<uint8_t> &&tx) override;
    using Sink<Buffer<uint8_t>>::push;
    Buffer<uint8_t> pop() override;
    bool empty() override;
    void irqHandler();
    inline static Registry<HW, UART_HandleTypeDef, 8> reg;
    struct RX {
        Queue<Buffer<uint8_t>> q;
        Buffer<uint8_t> buf = 512;
    } rx{};
    struct TX {
        Queue<Buffer<uint8_t>> q;
        Deadline deadline;
        bool active;
    } tx{};
 
    UART_HandleTypeDef handle{};
};
}