mirror of
git://projects.qi-hardware.com/ben-wpan.git
synced 2024-11-25 16:09:42 +02:00
Completed the basic counter firmware. Now it just has to work ...
- cntr/fw/cntr/Makefile, cntr/fw/cntr/descr.c, cntr/fw/cntr/ep0.c: enabled the usual USB stack - cntr/fw/cntr/cntr.c: initialize and poll USB - cntr/fw/cntr/cntr.c, cntr/fw/cntr/ep0.c: added counter application - cntr/fw/common/config.h (PLATFORM_SETUP): enable the crossbar
This commit is contained in:
Werner Almesberger
parent
5109e0bd44
commit
5514c336a5
@ -12,7 +12,7 @@
|
||||
|
||||
|
||||
MAIN = cntr
|
||||
OBJS = $(MAIN) # usb descr version ep0
|
||||
OBJS = $(MAIN) usb descr version ep0
|
||||
|
||||
F32XBASE = ../../../../f32xbase
|
||||
|
||||
|
||||
@ -11,6 +11,8 @@
|
||||
*/
|
||||
|
||||
|
||||
#include <stdint.h>
|
||||
|
||||
#include "regs.h"
|
||||
#include "io.h"
|
||||
#include "usb.h"
|
||||
@ -18,6 +20,16 @@
|
||||
#include "version.h"
|
||||
|
||||
|
||||
/*
|
||||
* Free-running 32 bit counter. The lower two bytes are from hardware Timer 0.
|
||||
* The upper two bytes are maintained by software. At the maximum input clock
|
||||
* frequency of 6 MHz, it wraps around every 11.9 minutes, leaving the host
|
||||
* plenty of time to read it.
|
||||
*/
|
||||
|
||||
uint8_t cntr[4];
|
||||
|
||||
|
||||
static void init_io(void)
|
||||
{
|
||||
/*
|
||||
@ -46,14 +58,47 @@ static void init_io(void)
|
||||
}
|
||||
|
||||
|
||||
static void setup_counter(void)
|
||||
{
|
||||
TCON = TR0; /* enable Timer 0 */
|
||||
TMOD = C_T0 | T0M0; /* clock from T0, mode 1: 16 bit counter */
|
||||
|
||||
XBR1 |= T0E; /* route T0 to port */
|
||||
|
||||
P0SKIP = 0x7f; /* assign T0 to P0_7 */
|
||||
}
|
||||
|
||||
|
||||
static void read_counter(void)
|
||||
{
|
||||
uint8_t th;
|
||||
|
||||
th = TH0;
|
||||
while (1) {
|
||||
cntr[0] = TL0;
|
||||
if (th == TH0)
|
||||
break;
|
||||
th = TH0;
|
||||
}
|
||||
if (th < cntr[1]) {
|
||||
cntr[2]++;
|
||||
if (!cntr[2])
|
||||
cntr[3]++;
|
||||
}
|
||||
cntr[1] = th;
|
||||
}
|
||||
|
||||
|
||||
void main(void)
|
||||
{
|
||||
init_io();
|
||||
setup_counter();
|
||||
|
||||
// usb_init();
|
||||
// ep0_init();
|
||||
usb_init();
|
||||
ep0_init();
|
||||
|
||||
while (1) {
|
||||
// usb_poll();
|
||||
read_counter();
|
||||
usb_poll();
|
||||
}
|
||||
}
|
||||
|
||||
68
cntr/fw/cntr/descr.c
Normal file
68
cntr/fw/cntr/descr.c
Normal file
@ -0,0 +1,68 @@
|
||||
/*
|
||||
* atspi/descr.c - USB descriptors
|
||||
*
|
||||
* Written 2008-2010 by Werner Almesberger
|
||||
* Copyright 2008-2010 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 "usb.h"
|
||||
|
||||
#include "config.h"
|
||||
|
||||
|
||||
/*
|
||||
* Device descriptor
|
||||
*/
|
||||
|
||||
const uint8_t device_descriptor[18] = {
|
||||
18, /* bLength */
|
||||
USB_DT_DEVICE, /* bDescriptorType */
|
||||
LE(0x200), /* bcdUSB */
|
||||
USB_CLASS_VENDOR_SPEC, /* bDeviceClass */
|
||||
0x00, /* bDeviceSubClass */
|
||||
0x00, /* bDeviceProtocol */
|
||||
EP0_SIZE, /* bMaxPacketSize */
|
||||
LE(USB_VENDOR), /* idVendor */
|
||||
LE(USB_PRODUCT), /* idProduct */
|
||||
LE(0x0001), /* bcdDevice */
|
||||
0, /* iManufacturer */
|
||||
0, /* iProduct */
|
||||
0, /* iSerialNumber */
|
||||
1 /* bNumConfigurations */
|
||||
};
|
||||
|
||||
|
||||
/*
|
||||
* Our configuration
|
||||
*
|
||||
* We're always bus-powered.
|
||||
*/
|
||||
|
||||
const uint8_t config_descriptor[] = {
|
||||
9, /* bLength */
|
||||
USB_DT_CONFIG, /* bDescriptorType */
|
||||
LE(9+9), /* wTotalLength */
|
||||
1, /* bNumInterfaces */
|
||||
1, /* bConfigurationValue (> 0 !) */
|
||||
0, /* iConfiguration */
|
||||
USB_ATTR_BUS_POWERED, /* bmAttributes */
|
||||
15, /* bMaxPower */
|
||||
|
||||
/* Interface #0 */
|
||||
|
||||
9, /* bLength */
|
||||
USB_DT_INTERFACE, /* bDescriptorType */
|
||||
0, /* bInterfaceNumber */
|
||||
0, /* bAlternateSetting */
|
||||
0, /* bNumEndpoints */
|
||||
USB_CLASS_VENDOR_SPEC, /* bInterfaceClass */
|
||||
0, /* bInterfaceSubClass */
|
||||
0, /* bInterfaceProtocol */
|
||||
0, /* iInterface */
|
||||
};
|
||||
119
cntr/fw/cntr/ep0.c
Normal file
119
cntr/fw/cntr/ep0.c
Normal file
@ -0,0 +1,119 @@
|
||||
/*
|
||||
* cntr/ep0.c - EP0 extension protocol
|
||||
*
|
||||
* Written 2008-2010 by Werner Almesberger
|
||||
* Copyright 2008-2010 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 <stdint.h>
|
||||
|
||||
#ifndef NULL
|
||||
#define NULL 0
|
||||
#endif
|
||||
|
||||
#include "regs.h"
|
||||
#include "usb.h"
|
||||
#include "cntr/ep0.h"
|
||||
#include "version.h"
|
||||
|
||||
|
||||
#define debug(...)
|
||||
#define error(...)
|
||||
|
||||
|
||||
/*
|
||||
* 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)
|
||||
|
||||
|
||||
extern uint8_t cntr[8];
|
||||
|
||||
static const uint8_t id[] = { EP0CNTR_MAJOR, EP0CNTR_MINOR, HW_TYPE };
|
||||
static __xdata uint8_t buf[128];
|
||||
|
||||
|
||||
#define BUILD_OFFSET 7 /* '#' plus "65535" plus ' ' */
|
||||
|
||||
|
||||
static __bit my_setup(struct setup_request *setup) __reentrant
|
||||
{
|
||||
unsigned tmp;
|
||||
uint8_t size, i;
|
||||
|
||||
switch (setup->bmRequestType | setup->bRequest << 8) {
|
||||
case CNTR_FROM_DEV(CNTR_ID):
|
||||
debug("CNTR_ID\n");
|
||||
if (setup->wLength > 3)
|
||||
return 0;
|
||||
usb_send(&ep0, id, setup->wLength, NULL, NULL);
|
||||
return 1;
|
||||
case CNTR_FROM_DEV(CNTR_BUILD):
|
||||
debug("CNTR_BUILD\n");
|
||||
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 CNTR_TO_DEV(CNTR_RESET):
|
||||
debug("CNTR_RESET\n");
|
||||
RSTSRC = SWRSF;
|
||||
while (1);
|
||||
|
||||
case CNTR_FROM_DEV(CNTR_READ):
|
||||
debug("CNTR_READ\n");
|
||||
buf[0] = cntr[0];
|
||||
buf[1] = cntr[1];
|
||||
buf[2] = cntr[2];
|
||||
buf[3] = cntr[3];
|
||||
usb_send(&ep0, buf, 4, NULL, NULL);
|
||||
return 1;
|
||||
|
||||
default:
|
||||
error("Unrecognized SETUP: 0x%02x 0x%02x ...\n",
|
||||
setup->bmRequestType, setup->bRequest);
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
void ep0_init(void)
|
||||
{
|
||||
user_setup = my_setup;
|
||||
}
|
||||
@ -25,8 +25,9 @@
|
||||
* This turns on the LED, to indicate that we're in the boot loader.
|
||||
*/
|
||||
|
||||
#define PLATFORM_SETUP \
|
||||
LED_MODE |= 1 << LED_BIT;
|
||||
#define PLATFORM_SETUP \
|
||||
LED_MODE |= 1 << LED_BIT; \
|
||||
XBR1 = XBARE;
|
||||
|
||||
|
||||
/*
|
||||
|
||||
Loading…
Reference in New Issue
Block a user