Stm32RailcomSender.hxx

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#include "freertos_drivers/common/RailcomDriver.hxx"
#include "dcc/railcom.h"
#include "freertos_drivers/st/Stm32Uart.hxx"
 
class Stm32RailcomSender : public RailcomDriver, protected Stm32Uart
{
public:
    Stm32RailcomSender(
        const char *name, USART_TypeDef *base, IRQn_Type interrupt)
        : Stm32Uart(name, base, interrupt)
    {
    }
 
public:
    void send_ch1(const DCCFeedback *ch1_pkt) override
    {
        ch1Pkt_ = ch1_pkt;
    }
 
    void send_ch2(const DCCFeedback *ch2_pkt) override
    {
        ch2Pkt_ = ch2_pkt;
    }
 
    ssize_t write(File *file, const void *buf, size_t count) override
    {
        // We do not support writing through the regular posix API.
        return -EIO;
    }
 
    ssize_t read(File *file, void *buf, size_t count) override
    {
        // We do not support reading through the regular posix API.
        return -EIO;
    }
 
private:
    // ======= DCC driver API ========
    void feedback_sample() override
    {
    }
    void start_cutout() override;
    void middle_cutout() override;
    void end_cutout() override {
        // We throw away the packets that we got given.
        //ch1Pkt_ = nullptr;
        //ch2Pkt_ = nullptr;
    }
    void no_cutout() override
    {
        // We throw away the packets that we got given.
        //ch1Pkt_ = nullptr;
        //ch2Pkt_ = nullptr;
    }
    void set_feedback_key(uint32_t key) override
    {
        expectedFeedbackKey_ = key;
    }
 
private:
    uintptr_t expectedFeedbackKey_ = 0;
 
    const DCCFeedback *ch1Pkt_ = nullptr;
    const DCCFeedback *ch2Pkt_ = nullptr;
};