FreeCalypso > hg > fc-tourmaline

annotate src/cs/system/bootloader/inc/serial.h @ 281:a75eefbf8be4

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Phone boot with PWON: weed out short button presses Every standard end user phone has a design provision, most naturally implemented in firmware, whereby the PWON button effects a boot only if it is held down long enough - short presses of this PWON button are detected, assumed to be spurious and cause the fw to power back off instead of proceeding with boot. The present change introduces this standard function in FreeCalypso.
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 24 Sep 2021 02:03:08 +0000
parents 4e78acac3d88
children
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4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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1 /*******************************************************************************
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2 *
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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3 * SERIAL.H
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4 *
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5 * This module contains functions to send or receive commands on the USART 8251.
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6 * Only polled mode is used.
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7 *
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8 * (C) Texas Instruments 1998
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9 *
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10 ******************************************************************************/
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11
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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12 #ifndef __SERIAL_H__
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13 #define __SERIAL_H__
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14
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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15 #include "main/sys_types.h"
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16
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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17 /*
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18 * ser_receive_command and ser_receive_char have 2 modes:
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19 * SER_INFINITE : Waits until a command is received.
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20 * SER_IMMEDIATE: Returns imediately even if no character is received.
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21 */
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22
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23 enum {
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24 SER_INFINITE,
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25 SER_IMMEDIATE
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26 };
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27
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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28 /*
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29 * Return values of ser_receive_data_for_flash.
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30 */
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31
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32 enum {
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33 SER_DATA_READY,
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34 SER_DATA_ERROR,
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35 SER_END_OF_FILE
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36 };
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37
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38 extern void ser_wait_no_activity (SYS_UWORD8 device_id);
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39 extern long ser_send_command (SYS_UWORD8 *command, SYS_UWORD8 device_id);
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40 extern SYS_UWORD8 ser_receive_command (SYS_UWORD8 *command, int mode);
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41 extern long ser_receive_data_for_flash (SYS_UWORD32 *address, SYS_UWORD16 *data, SYS_UWORD8 device_id);
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42 extern void ser_initialize_flash_data_detection (void);
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43 extern void ser_initialize_serial_link (void);
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44 extern void ser_wait_last_character_sent (SYS_UWORD8 device_id);
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45
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46 #endif /* __SERIAL_H__ */