evlogger/logger_8h_source.html

 #ifndef __LOGGER_H__

 #define __LOGGER_H__


 #include <stdio.h>

 #include <msp430.h>

 #include <msp430f5529.h>

 #include <legacymsp430.h>

 #include "typedefs.h"

 #include "ff.h"


 #define S1_PORT_OUT P1OUT

 #define S1_PORT_REN P1REN

 #define S1_PORT_IES P1IES

 #define S1_PORT_IE P1IE

 #define S1_PORT_IFG P1IFG

 #define S1_PIN _BV(7)


 #define S2_PORT_OUT P2OUT

 #define S2_PORT_REN P2REN

 #define S2_PORT_IES P2IES

 #define S2_PORT_IE P2IE

 #define S2_PORT_IFG P2IFG

 #define S2_PIN _BV(2)


 #define SD_RINGBUF_LEN 2048


 #define SD_RINGBUF_MASK (SD_RINGBUF_LEN - 1)


 typedef struct RingBuffer

 {

     char* buffer;

     uint16_t head, tail, len, mask;

     uint8_t overflow;

 } RingBuffer;


 #define ADC_CHANNELS 7


 #define ACCEL_CHANNELS 3


 typedef struct SampleBuffer

 {

     volatile uint16_t adc[ADC_CHANNELS];

     volatile uint16_t accel[ACCEL_CHANNELS];

 } SampleBuffer;


 void logger_init(void);

 void start_logger(RingBuffer* sdbuf);

 FRESULT sd_write(RingBuffer *rb, char *writebuf, FIL *fil, uint16_t n);

 uint8_t ringbuf_write(RingBuffer* buf, char* data, uint16_t n);

 uint8_t ringbuf_read(RingBuffer *buf, char* read_buffer, uint16_t n);

 void update_lcd(RingBuffer *buf);

 void logger_enable(void);

 void logger_disable(void);


 #endif /* __LOGGER_H__ */


ACCEL_CHANNELS
#define ACCEL_CHANNELS
The number of accelerometer channels (typically 3) to be sampled from.
Definition: logger.h:82

RingBuffer::head
uint16_t head
A pointer to the head of the ring buffer (the next free byte available for writing).
Definition: logger.h:68

logger_enable
void logger_enable(void)
Enable TA1 to begin logging by setting mode control to "up" mode, counter counts to TAxCCR0...
Definition: logger.c:411

RingBuffer::mask
uint16_t mask
This value is a ring buffer intrinsic and is automatically generated.
Definition: logger.h:68

sd_write
FRESULT sd_write(RingBuffer *rb, char *writebuf, FIL *fil, uint16_t n)
Write n bytes from a ring buffer to an SD card controlled by fatfs.
Definition: logger.c:295

SampleBuffer
A structure to contain one 'set' of samples from the vehicle.
Definition: logger.h:92

logger_disable
void logger_disable(void)
Disable TA1 to halt logging by setting mode control to STOP.
Definition: logger.c:433

RingBuffer::len
uint16_t len
The length of the ring buffer.
Definition: logger.h:68

RingBuffer
A ring buffer which can be attached to given (preallocated) memory area.
Definition: logger.h:65

RingBuffer::overflow
uint8_t overflow
A flag that will be set non-zero if a buffer overflow occurs (the head tries to "overtake" the tail...
Definition: logger.h:69

logger_init
void logger_init(void)
Set up the hardware for logging functionality, including the configuration of required peripherals su...
Definition: logger.c:80

SampleBuffer::adc
volatile uint16_t adc[ADC_CHANNELS]
Storage for the ADC channels.
Definition: logger.h:94

start_logger
void start_logger(RingBuffer *sdbuf)
Set up the SD card and the FATFS filesystem handler before commencing the logging service...
Definition: logger.c:194

ringbuf_read
uint8_t ringbuf_read(RingBuffer *buf, char *read_buffer, uint16_t n)
Read n bytes from a ring buffer.
Definition: logger.c:371

RingBuffer::tail
uint16_t tail
A pointer to the tail of the ring buffer (the next unread byte)
Definition: logger.h:68

update_lcd
void update_lcd(RingBuffer *buf)
Update the LCD with the current status of the logger, including buffer usage, data file size and SD c...
Definition: logger.c:145

sdbuf
static RingBuffer sdbuf
A RingBuffer that we will use to buffer sets of samples that are to be moved to the SD card...
Definition: logger.c:55

typedefs.h
Standard data type shorthand defined as with avr-libc.

fil
FIL fil
A pointer to the data file.
Definition: logger.c:65

ADC_CHANNELS
#define ADC_CHANNELS
The number of ADC channels that we will sample from.
Definition: logger.h:76

SampleBuffer::accel
volatile uint16_t accel[ACCEL_CHANNELS]
Storage for the accelerometer channels.
Definition: logger.h:95

RingBuffer::buffer
char * buffer
A pointer to the start of the character buffer to be used by this ring buffer.
Definition: logger.h:67

ringbuf_write
uint8_t ringbuf_write(RingBuffer *buf, char *data, uint16_t n)
Write n bytes to a RingBuffer.
Definition: logger.c:325