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main.c
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main.c
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/* Copyright (c) 2013, Regents of the University of California
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of the <organization> nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "common.h"
#include "uart.h"
#include "fat.h"
#include "config.h"
#include "timer.h"
#include "buff.h"
#include "a2d.h"
#include "bt.h"
#include "emg.h"
#include "accel.h"
#include "sp02.h"
#include "accel.h"
#include "mmc.h"
#include "i2c.h"
#include "data.h"
#include "ad8557.h"
#include "ringbuffer.h"
#define __MAIN_C_
extern volatile uint8_t buff_flushReady;
extern volatile uint8_t uart_status;
extern volatile uint8_t x;
extern volatile uint8_t ad5933_mode;
extern volatile uint32_t bt_startTime;
extern volatile uint32_t bt_killTime;
volatile uint32_t rtc;
volatile uint32_t spin=0;
volatile uint16_t main_status;
volatile enum serialState_t serialState = NONE;
uint8_t disk_reset = 0;
volatile istate_t istate;
void fs_open(void) {
if (buff_init() == OK)
main_status |= _DISK_WRITE_OK;
}
void fs_connect(void) {
if (fat_init() == OK) {
main_status |= _FILESYSTEM_OK;
fs_open();
}
}
void main(void) {
volatile uint16_t i;
main_status = _DISK_WRITE | _SAMPLE_VOLTAGE | _SAMPLE_PULSEOX |
_SAMPLE_ECG | _SAMPLE_EMG | _SAMPLE_ACCEL | _SAMPLE_BIOI;
// configure XT2 16Mhz XTAL
// ACLK is the 32khz clock xtal
WDTCTL = WDTPW + WDTHOLD; // Stop WDT
BCSCTL1 = 0x00; // XT2ON, XFXT1 LF mode, ACLK div/1me
BCSCTL3 = XT2S_2 | XCAP_3; //16Mhz, 32768Hz, 12.5pF, ACLK=LFXT1
while (IFG1 & OFIFG) { // wait for oscillator to settle
IFG1 &= ~OFIFG;
for (i = 0x2FFF; i > 0; i--);
}
BCSCTL2 |= SELM_2 + SELS; // MCLK = SMCLK = XT2 (safe)
ENABLE_INTERRUPTS();
// configure misc ports
P1DIR |= _BV(0); // set LED port to output
LED_ON();
// dissable the various chip selects on the PCB
P4DIR |= _BV(4);
P4OUT |= _BV(4);
P5DIR |= _BV(4);
P5OUT |= _BV(4);
P3DIR |= _BV(6); //ACCEL
P3OUT |= _BV(6); //
// Initialize Peripherals
rtc = 0; // setup clock
bt_off();
uart_init();
// bt_on();
// bt_init(); //enable bluetooth, wait for it to finis init
spi_init();
accel_init(RANGE_2G,BANDWIDTH_25);
a2d_init();
sp02_init();
ad8557_init(74,2); // Gain = 4.016 * 25
//ad8557_init(0,0); // Gain = 4.016 * 25
ad5933_init(); //bioI & I2C CONFIG
timer_init(); // this starts aquiring data
LED_OFF();
/*
** If _DISK_WRITE then the filesystem writes are enabled
** fs_connect() -> _FILESYSTEM_OK
** fs_open() -> _DISK_WRITE_OK
*/
while (1) {
main_status |= _BT_TRANSMIT;//XXX
//__low_power_mode_3();
//Attempt to connect to disk if present
if ((main_status & _DISK_WRITE) && !(main_status & _DISK_WRITE_OK)) {
if (!(main_status & _FILESYSTEM_OK)) fs_connect();
if (main_status & _FILESYSTEM_OK && !(main_status & _DISK_WRITE_OK)) fs_open();
}
// if data to be flushed AND filesystem writes are enabled..
if (main_status & (_DISK_WRITE | _FILESYSTEM_OK | _DISK_WRITE_OK | _DISK_TX_OK)) {
buff_flush(); //write out data to disk if we have enough
main_status &= ~_DISK_TX_OK; //clear write flag
}
// handle messages from the BT module
if (uart_status & UART_RX_READY) uart_handle();
// start BT transmit after sufficient delay
if (bt_startTime && rtc > bt_startTime) {
main_status |= _BT_TRANSMIT;
bt_startTime = 0;
}
// restart the BT module after sufficient delay
if (bt_killTime && rtc > bt_killTime) {
bt_off();
uart_init();
bt_init();
bt_killTime = 0;
}
spin++; //counter to determine how many times we've been in this loop
}
}