mirror of
git://projects.qi-hardware.com/wernermisc.git
synced 2024-12-21 05:32:24 +02:00
161 lines
4.0 KiB
C
161 lines
4.0 KiB
C
/*
|
|
* labsw/ep0.c - EP0 extension protocol
|
|
*
|
|
* Written 2008-2011 by Werner Almesberger
|
|
* Copyright 2008-2011 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 <stdint.h>
|
|
|
|
#ifndef NULL
|
|
#define NULL 0
|
|
#endif
|
|
|
|
#include "regs.h"
|
|
#include "usb.h"
|
|
#include "labsw/ep0.h"
|
|
#include "io.h"
|
|
#include "version.h"
|
|
|
|
|
|
extern int local;
|
|
|
|
|
|
/*
|
|
* SDCC 2.8.0 had a number of code generation bugs that appeared in the big
|
|
* switch statement of my_setup. SDCC_FORCE_UPDATE forced the value of the
|
|
* "size" variable to be written to memory. This work-around doesn't seem
|
|
* to be necessary with 2.9.0, but we keep it around, just in case.
|
|
*
|
|
* Unfortunately, the setup->bRequest garbling bug is still with us. Without
|
|
* the evaluation forced with SDCC_FORCE_EVAL, sdcc gets confused about the
|
|
* value of setup->bRequest and then rejects all SETUP requests.
|
|
*/
|
|
|
|
#define SDCC_FORCE_EVAL(type, value) \
|
|
do { \
|
|
static volatile type foo; \
|
|
foo = value; \
|
|
} while (0)
|
|
|
|
#define SDCC_FORCE_UPDATE(type, var) \
|
|
do { \
|
|
volatile type foo; \
|
|
foo = var; \
|
|
var = foo; \
|
|
} while (0)
|
|
|
|
|
|
static uint8_t id[3] = {
|
|
EP0LABSW_MAJOR, EP0LABSW_MINOR,
|
|
/* hw type is set at run time */
|
|
};
|
|
|
|
static __xdata uint8_t buf[128];
|
|
|
|
|
|
#define BUILD_OFFSET 7 /* '#' plus "65535" plus ' ' */
|
|
|
|
|
|
static __bit my_setup(struct setup_request *setup) __reentrant
|
|
{
|
|
uint32_t tmp;
|
|
uint8_t size, i;
|
|
|
|
switch (setup->bmRequestType | setup->bRequest << 8) {
|
|
case LABSW_FROM_DEV(LABSW_ID):
|
|
size = setup->wLength;
|
|
if (size > 3)
|
|
size = 3;
|
|
id[2] = 0; /* hardware type */
|
|
usb_send(&ep0, id, size, NULL, NULL);
|
|
return 1;
|
|
case LABSW_FROM_DEV(LABSW_BUILD):
|
|
tmp = build_number;
|
|
for (i = BUILD_OFFSET-2; tmp; i--) {
|
|
buf[i] = (tmp % 10)+'0';
|
|
tmp /= 10;
|
|
}
|
|
buf[i] = '#';
|
|
buf[BUILD_OFFSET-1] = ' ';
|
|
for (size = 0; build_date[size]; size++)
|
|
buf[BUILD_OFFSET+size] = build_date[size];
|
|
size += BUILD_OFFSET-i+1;
|
|
SDCC_FORCE_EVAL(uint8_t, setup->bRequest);
|
|
if (size > setup->wLength)
|
|
return 0;
|
|
usb_send(&ep0, buf+i, size, NULL, NULL);
|
|
return 1;
|
|
|
|
case LABSW_TO_DEV(LABSW_RESET):
|
|
RSTSRC = SWRSF;
|
|
while (1);
|
|
|
|
case LABSW_FROM_DEV(LABSW_GET):
|
|
size = setup->wLength;
|
|
if (size > 2)
|
|
size = 2;
|
|
buf[0] =
|
|
(IN_1 ? 0 : LABSW_IN1) |
|
|
(IN_2 ? 0 : LABSW_IN2) |
|
|
(IN_3 ? 0 : LABSW_IN3) |
|
|
(IN_4 ? 0 : LABSW_IN4);
|
|
buf[1] =
|
|
(BUT_MAIN ? 0 : LABSW_BUT_MAIN) |
|
|
(BUT_CH1 ? 0 : LABSW_BUT_CH1) |
|
|
(BUT_CH2 ? 0 : LABSW_BUT_CH2);
|
|
usb_send(&ep0, buf, size, NULL, NULL);
|
|
return 1;
|
|
|
|
case LABSW_TO_DEV(LABSW_SET):
|
|
local = !setup->wIndex;
|
|
|
|
if (setup->wIndex & LABSW_CH1_RELAY)
|
|
CH1_RELAY = setup->wValue & LABSW_CH1_RELAY ? 1 : 0;
|
|
if (setup->wIndex & LABSW_CH1_OPT)
|
|
CH1_OPT = setup->wValue & LABSW_CH1_OPT ? 0 : 1;
|
|
if (setup->wIndex & LABSW_CH2_RELAY)
|
|
CH2_RELAY = setup->wValue & LABSW_CH2_RELAY ? 1 : 0;
|
|
if (setup->wIndex & LABSW_CH2_OPT)
|
|
CH2_OPT = setup->wValue & LABSW_CH2_OPT ? 0 : 1;
|
|
|
|
if (setup->wIndex & LABSW_OUT1)
|
|
OUT_1 = setup->wValue & LABSW_OUT1 ? 0 : 1;
|
|
if (setup->wIndex & LABSW_OUT2)
|
|
OUT_2 = setup->wValue & LABSW_OUT2 ? 0 : 1;
|
|
if (setup->wIndex & LABSW_OUT3)
|
|
OUT_3 = setup->wValue & LABSW_OUT3 ? 0 : 1;
|
|
if (setup->wIndex & LABSW_OUT4)
|
|
OUT_4 = setup->wValue & LABSW_OUT4 ? 0 : 1;
|
|
|
|
if (setup->wIndex & LABSW_MAIN_R)
|
|
LED_MAIN_R = setup->wValue & LABSW_MAIN_R ? 1 : 0;
|
|
if (setup->wIndex & LABSW_MAIN_G)
|
|
LED_MAIN_G = setup->wValue & LABSW_MAIN_G ? 1 : 0;
|
|
if (setup->wIndex & LABSW_CH1_R)
|
|
LED_CH1_R = setup->wValue & LABSW_CH1_R ? 1 : 0;
|
|
if (setup->wIndex & LABSW_CH1_G)
|
|
LED_CH1_G = setup->wValue & LABSW_CH1_G ? 1 : 0;
|
|
if (setup->wIndex & LABSW_CH2_R)
|
|
LED_CH2_R = setup->wValue & LABSW_CH2_R ? 1 : 0;
|
|
if (setup->wIndex & LABSW_CH2_G)
|
|
LED_CH2_G = setup->wValue & LABSW_CH2_G ? 1 : 0;
|
|
return 1;
|
|
|
|
default:
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
|
|
void ep0_init(void)
|
|
{
|
|
user_setup = my_setup;
|
|
}
|