mirror of
git://projects.qi-hardware.com/ben-wpan.git
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- atusb.c (atusb_error, atusb_clear_error, atusb_open, atusb_close, atusb_reset, atusb_reset_rf, atusb_test_mode, atusb_slp_tr, atusb_interrupt, atusb_set_clkm, atusb_dev_handle): moved to atusb-common.c - atusb-common.c (atusb_set_clkm): pass atusb_reg_write via atusb_driver.reg_write instead - atusb.c (FROM_DEV, TO_DEV, struct atusb_dsc): moved to atusb-common.h - Makefile (OBJS): added atusb-common.o
240 lines
4.3 KiB
C
240 lines
4.3 KiB
C
/*
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* lib/atusb-common.c - ATUSB access functions shared by all ATUSB drivers
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*
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* Written 2010-2011 by Werner Almesberger
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* Copyright 2010-2011 Werner Almesberger
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include <stdint.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <usb.h>
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#include "atusb/ep0.h"
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#include "atusb/usb-ids.h"
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#include "usbopen.h"
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#include "driver.h"
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#include "atusb-common.h"
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/* ----- error handling ---------------------------------------------------- */
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int atusb_error(void *handle)
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{
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struct atusb_dsc *dsc = handle;
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return dsc->error;
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}
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int atusb_clear_error(void *handle)
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{
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struct atusb_dsc *dsc = handle;
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int ret;
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ret = dsc->error;
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dsc->error = 0;
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return ret;
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}
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/* ----- open/close -------------------------------------------------------- */
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void *atusb_open(const char *arg)
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{
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usb_dev_handle *dev;
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struct atusb_dsc *dsc;
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usb_unrestrict();
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if (arg)
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restrict_usb_path(arg);
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dev = open_usb(USB_VENDOR, USB_PRODUCT);
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if (!dev) {
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fprintf(stderr, ":-(\n");
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return NULL;
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}
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dsc = malloc(sizeof(*dsc));
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if (!dsc) {
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perror("malloc");
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exit(1);
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}
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dsc->dev = dev;
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dsc->error = 0;
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return dsc;
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}
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void atusb_close(void *handle)
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{
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/* to do */
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}
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/* ----- device mode ------------------------------------------------------- */
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void atusb_reset(void *handle)
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{
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struct atusb_dsc *dsc = handle;
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int res;
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if (dsc->error)
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return;
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res =
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usb_control_msg(dsc->dev, TO_DEV, ATUSB_RESET, 0, 0, NULL, 0, 1000);
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if (res < 0) {
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fprintf(stderr, "ATUSB_RESET: %d\n", res);
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dsc->error = 1;
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}
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}
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void atusb_reset_rf(void *handle)
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{
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struct atusb_dsc *dsc = handle;
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int res;
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if (dsc->error)
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return;
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res = usb_control_msg(dsc->dev, TO_DEV, ATUSB_RF_RESET, 0, 0, NULL,
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0, 1000);
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if (res < 0) {
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fprintf(stderr, "ATUSB_RF_RESET: %d\n", res);
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dsc->error = 1;
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}
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}
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void atusb_test_mode(void *handle)
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{
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struct atusb_dsc *dsc = handle;
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int res;
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if (dsc->error)
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return;
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res =
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usb_control_msg(dsc->dev, TO_DEV, ATUSB_TEST, 0, 0, NULL, 0, 1000);
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if (res < 0) {
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fprintf(stderr, "ATUSB_TEST: %d\n", res);
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dsc->error = 1;
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}
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}
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/* ----- SLP_TR ------------------------------------------------------------ */
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void atusb_slp_tr(void *handle, int on, int pulse)
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{
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struct atusb_dsc *dsc = handle;
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int res;
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if (dsc->error)
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return;
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if (!on || !pulse) {
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fprintf(stderr,
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"SLP_TR mode on=%d pulse=%d not supported\n", on, pulse);
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return;
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}
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res = usb_control_msg(dsc->dev, TO_DEV, ATUSB_SLP_TR, 0, 0, NULL, 0,
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1000);
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if (res < 0) {
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fprintf(stderr, "ATUSB_SLP_TR: %d\n", res);
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dsc->error = 1;
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}
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}
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/* ----- RF interrupt ------------------------------------------------------ */
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int atusb_interrupt(void *handle)
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{
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struct atusb_dsc *dsc = handle;
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uint8_t buf;
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int res;
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if (dsc->error)
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return -1;
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res = usb_control_msg(dsc->dev, FROM_DEV, ATUSB_POLL_INT, 0, 0,
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(void *) &buf, 1, 1000);
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if (res < 0) {
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fprintf(stderr, "ATUSB_POLL_INT: %d\n", res);
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dsc->error = 1;
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return -1;
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}
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return buf;
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}
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/* ----- CLKM handling ----------------------------------------------------- */
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/*
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* ATmega32U2-based boards don't allow disabling CLKM, so we keep it at 8 MHz.
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* We could accommodate a choice between 8 MHz and 16 MHz, but that's for
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* later.
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*/
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int atusb_set_clkm(void *handle, int mhz)
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{
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struct atusb_dsc *dsc = handle;
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uint8_t ids[3];
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int res;
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if (dsc->error)
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return 0;
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res = usb_control_msg(dsc->dev, FROM_DEV, ATUSB_ID, 0, 0,
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(void *) ids, 3, 1000);
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if (res < 0) {
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fprintf(stderr, "ATUSB_ID: %s\n", usb_strerror());
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dsc->error = 1;
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return 0;
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}
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switch (ids[2]) {
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case HW_TYPE_100813:
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case HW_TYPE_101216:
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break;
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case HW_TYPE_110131:
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if (mhz == 0 || mhz == 8)
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return 1;
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fprintf(stderr, "this board only supports CLKM = 8 MHz\n");
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return 0;
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default:
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fprintf(stderr,
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"atusb_set_clkm: unknown hardware type 0x%02x\n", ids[2]);
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return 0;
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}
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return atrf_set_clkm_generic(atusb_driver.reg_write, dsc, mhz);
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}
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/* ----- Driver-specific hacks --------------------------------------------- */
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void *atusb_dev_handle(void *handle)
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{
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struct atusb_dsc *dsc = handle;
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return dsc->dev;
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}
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