espterm-firmware/user/uart_buffer.h

//
// Created by MightyPork on 2017/08/24.
//

#ifndef ESP_VT100_FIRMWARE_UART_BUFFER_H
#define ESP_VT100_FIRMWARE_UART_BUFFER_H

#include <esp8266.h>

#define UART_TX_BUFFER_SIZE 1000 //Ring buffer length of tx buffer
#define UART_RX_BUFFER_SIZE 600 //Ring buffer length of rx buffer

// the init func
void UART_AllocBuffers(void);

// read from rx buffer
uint16 UART_ReadAsync(char *pdata, uint16 data_len);

// write to tx buffer
void UART_SendAsync(const char *pdata, int data_len);

//move data from uart fifo to rx buffer
void UART_RxFifoCollect(void);
//move data from uart tx buffer to fifo
void UART_DispatchFromTxBuffer(uint8 uart_no);

u16 UART_AsyncRxCount(void);
u16 UART_AsyncTxCount(void);

u16 UART_AsyncTxGetEmptySpace(void);

extern void __attribute__((weak)) notify_empty_txbuf(void);

#endif //ESP_VT100_FIRMWARE_UART_BUFFER_H