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ben-wpan/tools/lib/atspi.c
Werner Almesberger ac349b0bc0 Introduce library with ATSPI access functions (largely untested)
- tools/include/atspi.h, tools/lib/Makefile, tools/lib/atspi.c: library
  with ATSPI access functions
- tools/atspi-id/Makefile: use libatspi
- tools/atspi-id/atspi-id.c (main) use atspi_open instead of open_usb
- fw/atspi/at86rf230.h: moved to fw/include/
- fw/include/at86rf230.h: added ID registers
- fw/atspi/ep0.c: removed stray #endif
2010-08-20 16:27:24 -03:00

109 lines
1.8 KiB
C

/*
* lib/atspi.c - ATSPI access functions library
*
* Written 2010 by Werner Almesberger
* Copyright 2010 Werner Almesberger
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#include <stdio.h>
#include <usb.h>
#include "f32xbase/usb.h"
#include "atspi/ep0.h"
#include "atspi/usb-ids.h"
#include "atspi.h"
#define FROM_DEV ATSPI_FROM_DEV(0)
#define TO_DEV ATSPI_TO_DEV(0)
/* ----- error handling ---------------------------------------------------- */
static int error;
int atspi_error(void)
{
return error;
}
int atspi_clear_error(void)
{
int ret;
ret = error;
error = 0;
return ret;
}
/* ----- open/close -------------------------------------------------------- */
usb_dev_handle *atspi_open(void)
{
usb_dev_handle *dev;
dev = open_usb(USB_VENDOR, USB_PRODUCT);
if (dev) {
error = 0;
} else {
fprintf(stderr, ":-(\n");
error = 1;
}
return dev;
}
void atspi_close(usb_dev_handle *dev)
{
/* to do */
}
/* ----- register access --------------------------------------------------- */
void atspi_reg_write(usb_dev_handle *dev, uint8_t reg, uint8_t value)
{
int res;
if (error)
return;
res = usb_control_msg(dev, TO_DEV, ATSPI_REG_WRITE, value, reg,
NULL, 0, 1000);
if (res < 0) {
fprintf(stderr, "ATSPI_REG_WRITE: %d\n", res);
error = 1;
}
}
uint8_t atspi_reg_read(usb_dev_handle *dev, uint8_t reg)
{
uint8_t value = 0;
int res;
if (error)
return 0;
res = usb_control_msg(dev, FROM_DEV, ATSPI_REG_READ, 0, reg,
(void *) &value, 1, 1000);
if (res < 0) {
fprintf(stderr, "ATSPI_REG_READ: %d\n", res);
error = 1;
}
return value;
}