view src/cs/system/bootloader/inc/serial.h @ 605:07d0dc4431f4

bootloader.s: same MEMIF fix as in int.s plus DPLL BYPASS fix Both MEMIF and DPLL settings are now the same between int.s and bootloader.s assembly code paths. Previously bootloader.s was setting DPLL BYPASS /2 mode, which persisted until _INT_Initialize code with the bootloader body omitted, or was changed to /1 in the hardware init function in the bootloader.lib:start.obj module.
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 17 Jun 2019 18:40:32 +0000
parents 945cf7f506b2
children
line wrap: on
line source

/*******************************************************************************
 *
 * SERIAL.H
 *
 * This module contains functions to send or receive commands on the USART 8251.
 * Only polled mode is used.
 * 
 * (C) Texas Instruments 1998
 *
 ******************************************************************************/

#ifndef __SERIAL_H__
#define __SERIAL_H__

#include "main/sys_types.h"

/*
 * ser_receive_command and ser_receive_char have 2 modes:
 *      SER_INFINITE : Waits until a command is received.
 *      SER_IMMEDIATE: Returns imediately even if no character is received.
 */

enum {
    SER_INFINITE,
    SER_IMMEDIATE
};

/*
 * Return values of ser_receive_data_for_flash.
 */

enum {
    SER_DATA_READY,
    SER_DATA_ERROR,
    SER_END_OF_FILE
};

extern void ser_wait_no_activity (SYS_UWORD8 device_id);
extern long ser_send_command (SYS_UWORD8 *command, SYS_UWORD8 device_id);
extern SYS_UWORD8 ser_receive_command (SYS_UWORD8 *command, int mode);
extern long ser_receive_data_for_flash (SYS_UWORD32 *address, SYS_UWORD16 *data, SYS_UWORD8 device_id);
extern void ser_initialize_flash_data_detection (void);
extern void ser_initialize_serial_link (void);
extern void ser_wait_last_character_sent (SYS_UWORD8 device_id);

#endif /* __SERIAL_H__ */