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/********************************************************************
* Description: streamer.h
* Typedefs and such for the "streamer" and "sampler"
* HAL components.
*
* Author: John Kasunich <jmkasunich at sourceforge dot net>
* License: GPL Version 2
*
* Copyright (c) 2006 All rights reserved.
*
********************************************************************/
#define MAX_STREAMERS 8
#define MAX_SAMPLERS 8
#define MAX_PINS 20
#define MAX_SHMEM 128000
#define STREAMER_SHMEM_KEY 0x48535430
#define SAMPLER_SHMEM_KEY 0x48534130
#define FIFO_MAGIC_NUM 0x4649464F
/* These structs live in the shared memory that connects the user
space and RT parts. They are _not_ in HAL shared memory.
*/
typedef union {
real_t f;
char b;
hal_s32_t s;
hal_u32_t u;
} shmem_data_t;
typedef struct {
unsigned int magic;
volatile unsigned int in;
volatile unsigned int out;
int depth;
int num_pins;
unsigned long last_sample;
hal_type_t type[MAX_PINS];
shmem_data_t data[];
} fifo_t;
/* this struct lives in HAL shared memory */
typedef union {
hal_bit_t *hbit;
hal_float_t *hfloat;
hal_u32_t *hu32;
hal_s32_t *hs32;
} pin_data_t;
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