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circuitpython/ports/esp8266/uart.h

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#ifndef MICROPY_INCLUDED_ESP8266_UART_H
#define MICROPY_INCLUDED_ESP8266_UART_H
#include <eagle_soc.h>
#define UART0 (0)
#define UART1 (1)
typedef enum {
UART_FIVE_BITS = 0x0,
UART_SIX_BITS = 0x1,
UART_SEVEN_BITS = 0x2,
UART_EIGHT_BITS = 0x3
} UartBitsNum4Char;
typedef enum {
UART_ONE_STOP_BIT = 0x1,
UART_ONE_HALF_STOP_BIT = 0x2,
UART_TWO_STOP_BIT = 0x3
} UartStopBitsNum;
typedef enum {
UART_NONE_BITS = 0,
UART_ODD_BITS = BIT0,
UART_EVEN_BITS = 0
} UartParityMode;
typedef enum {
UART_STICK_PARITY_DIS = 0,
UART_STICK_PARITY_EN = BIT1
} UartExistParity;
typedef enum {
UART_BIT_RATE_9600 = 9600,
UART_BIT_RATE_19200 = 19200,
UART_BIT_RATE_38400 = 38400,
UART_BIT_RATE_57600 = 57600,
UART_BIT_RATE_74880 = 74880,
UART_BIT_RATE_115200 = 115200,
UART_BIT_RATE_230400 = 230400,
UART_BIT_RATE_256000 = 256000,
UART_BIT_RATE_460800 = 460800,
UART_BIT_RATE_921600 = 921600
} UartBautRate;
typedef enum {
UART_NONE_CTRL,
UART_HARDWARE_CTRL,
UART_XON_XOFF_CTRL
} UartFlowCtrl;
typedef enum {
UART_EMPTY,
UART_UNDER_WRITE,
UART_WRITE_OVER
} RcvMsgBuffState;
typedef struct {
uint32 RcvBuffSize;
uint8 *pRcvMsgBuff;
uint8 *pWritePos;
uint8 *pReadPos;
uint8 TrigLvl; //JLU: may need to pad
RcvMsgBuffState BuffState;
} RcvMsgBuff;
typedef struct {
uint32 TrxBuffSize;
uint8 *pTrxBuff;
} TrxMsgBuff;
typedef enum {
UART_BAUD_RATE_DET,
UART_WAIT_SYNC_FRM,
UART_SRCH_MSG_HEAD,
UART_RCV_MSG_BODY,
UART_RCV_ESC_CHAR,
} RcvMsgState;
typedef struct {
UartBautRate baut_rate;
UartBitsNum4Char data_bits;
UartExistParity exist_parity;
UartParityMode parity; // chip size in byte
UartStopBitsNum stop_bits;
UartFlowCtrl flow_ctrl;
RcvMsgBuff rcv_buff;
TrxMsgBuff trx_buff;
RcvMsgState rcv_state;
int received;
int buff_uart_no; //indicate which uart use tx/rx buffer
} UartDevice;
void uart_init(UartBautRate uart0_br, UartBautRate uart1_br);
int uart0_rx(void);
bool uart_rx_wait(uint32_t timeout_us);
int uart_rx_char(void);
void uart_tx_one_char(uint8 uart, uint8 TxChar);
void uart_flush(uint8 uart);
void uart_os_config(int uart);
void uart_setup(uint8 uart);
// check status of rx/tx
int uart_rx_any(uint8 uart);
int uart_tx_any_room(uint8 uart);
#endif // MICROPY_INCLUDED_ESP8266_UART_H