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153 lines
4.2 KiB
C
Executable File
153 lines
4.2 KiB
C
Executable File
/*! \file satmb.c \brief Satellite Motherboard Driver Functions. */
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//*****************************************************************************
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//
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// File Name : 'satmb.c'
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// Title : Satellite Motherboard Driver Functions
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// Author : Pascal Stang - Copyright (C) 2004
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// Created : 2004.10.13
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// Revised : 2004.10.13
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// Version : 0.1
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// Target MCU : Atmel AVR series
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// Editor Tabs : 4
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//
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// This code is distributed under the GNU Public License
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// which can be found at http://www.gnu.org/licenses/gpl.txt
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//
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//*****************************************************************************
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//----- Include Files ---------------------------------------------------------
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#include <avr/io.h> // include I/O definitions (port names, pin names, etc)
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#include <avr/signal.h> // include "signal" names (interrupt names)
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#include <avr/interrupt.h> // include interrupt support
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#include "global.h" // include our global settings
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#include "dallas.h"
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#include "ds2450.h"
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#include "satmb.h"
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#include "dallasids.h"
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// globals
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// functions
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void satmbInit(void)
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{
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// preset serial port power to on
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satmbSetSerialPortPower(1);
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}
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void satmbSetSerialPortPower(u08 on)
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{
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// set I/O control line to output
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sbi(SATMB_SER_PWR_DDR, SATMB_SER_PWR_PIN);
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// set serial port power state
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if(on)
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sbi(SATMB_SER_PWR_PORT, SATMB_SER_PWR_PIN);
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else
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cbi(SATMB_SER_PWR_PORT, SATMB_SER_PWR_PIN);
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}
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void satmbSerialRtsCtsInit(void)
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{
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// initialize RTS/CTS lines for operation
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// RTS is input, set pullup
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cbi(SATMB_SER_RTS_DDR, SATMB_SER_RTS_PIN);
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sbi(SATMB_SER_RTS_PORT, SATMB_SER_RTS_PIN);
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// CTS is output, init low
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sbi(SATMB_SER_CTS_DDR, SATMB_SER_CTS_PIN);
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cbi(SATMB_SER_CTS_PORT, SATMB_SER_CTS_PIN);
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}
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u08 satmbSerialRtsCheck(void)
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{
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if(inb(SATMB_SER_RTS_PORTIN) & (1<<SATMB_SER_RTS_PIN))
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return TRUE;
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else
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return FALSE;
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}
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void satmbSerialCtsSet(u08 state)
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{
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if(state)
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sbi(SATMB_SER_CTS_PORT, SATMB_SER_CTS_PIN);
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else
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cbi(SATMB_SER_CTS_PORT, SATMB_SER_CTS_PIN);
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}
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u16 satmbV1GetCurrent(DallasSubsysId* targetSubsysId)
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{
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u16 value;
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// setup A/D for 5V 16-bit conversion
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ds2450SetupAll(&targetSubsysId->S, 16, DS2450_RANGE_5V);
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// read current-level A/D
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ds2450StartAndResult(&targetSubsysId->S, 'A', &value);
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// calculate milliamp value
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// ma = 1000*(((value/65536)*5.12V)/(50*R))
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// for R=0.47/2 ohms
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// return result
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return value/150;
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}
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u16 satmbV2GetCurrent(DallasSubsysId* targetSubsysId)
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{
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u16 value;
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// setup A/D for 5V 16-bit conversion
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ds2450SetupAll(&targetSubsysId->S, 16, DS2450_RANGE_5V);
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// read current-level A/D
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ds2450StartAndResult(&targetSubsysId->S, 'C', &value);
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// calculate milliamp value
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// ma = 1000*(((value/65536)*5.12V)/(50*R))
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// for R=0.1/2 ohms
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// return result
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return value/32;
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}
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u08 satmbV1GetOverCurrent(DallasSubsysId* targetSubsysId)
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{
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u16 value;
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// setup A/D for 5V 16-bit conversion
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ds2450SetupAll(&targetSubsysId->S, 16, DS2450_RANGE_5V);
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// read overcurrent state A/D
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ds2450StartAndResult(&targetSubsysId->S, 'B', &value);
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// return result
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return (value>0x8000);
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}
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u08 satmbV2GetOverCurrent(DallasSubsysId* targetSubsysId)
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{
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u16 value;
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// setup A/D for 5V 16-bit conversion
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ds2450SetupAll(&targetSubsysId->S, 16, DS2450_RANGE_5V);
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// read overcurrent state A/D
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ds2450StartAndResult(&targetSubsysId->S, 'D', &value);
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// return result
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return (value>0x8000);
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}
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void satmbV1SetPowerState(DallasSubsysId* targetSubsysId, u08 state)
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{
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satmbSetPowerState(&targetSubsysId->V1, state);
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}
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void satmbV2SetPowerState(DallasSubsysId* targetSubsysId, u08 state)
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{
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satmbSetPowerState(&targetSubsysId->V2, state);
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}
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void satmbSetPowerState(dallas_rom_id_T* targetRomId, u08 state)
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{
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if(state)
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{
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// reset overcurrent flag
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ds2450DigitalOut(targetRomId, 'B', DIGOUT_LOW);
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ds2450DigitalOut(targetRomId, 'B', DIGOUT_OC);
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// assert enable
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ds2450DigitalOut(targetRomId, 'A', DIGOUT_LOW);
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}
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// pulse clock line
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ds2450DigitalOut(targetRomId, 'C', DIGOUT_OC);
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ds2450DigitalOut(targetRomId, 'C', DIGOUT_LOW);
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ds2450DigitalOut(targetRomId, 'C', DIGOUT_OC);
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// release enable
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ds2450DigitalOut(targetRomId, 'A', DIGOUT_OC);
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}
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