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git://projects.qi-hardware.com/ben-wpan.git
synced 2024-11-22 08:48:26 +02:00
atusb/fw/: changed USB stack to use interrupts instead of polling
Note: this change surprisingly _increases_ the DFU wait in the boot loader. Not yet sure why. - boot.c (main): move the interrupt vectors to the boot loader section - atusb.c (main): move the interrupt vectors to the application section - boot.c (main): enable global interrupts while looping (disable them before jumping to the application) - board_app.c (__timer_read, timer_read): removed wrapped since we're now always called with interrupts disabled - usb/atu2.c (ep_init): enable endpoint interrupts - usb/atu2.c (usb_init): enable device interrupts - usb/atu2.c (usb_poll, USB_GEN_vect, USB_COM_vect): moved poll loop code into separate handlers for device and endpoint interrupts - boot.c (main), atusb.c (main): removed call to usb_poll
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@ -37,8 +37,11 @@ int main(void)
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ep0_init();
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timer_init();
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/* move interrupt vectors to 0 */
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MCUCR = 1 << IVCE;
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MCUCR = 0;
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sei();
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while (1)
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usb_poll();
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while (1);
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}
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@ -51,7 +51,7 @@ ISR(TIMER1_OVF_vect)
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}
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static uint64_t __timer_read(void)
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uint64_t timer_read(void)
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{
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uint32_t high;
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uint8_t low, mid;
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@ -75,17 +75,6 @@ static uint64_t __timer_read(void)
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}
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uint64_t timer_read(void)
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{
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uint64_t res;
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cli();
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res = __timer_read();
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sei();
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return res;
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}
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void timer_init(void)
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{
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/* configure timer 1 as a free-running CLK counter */
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@ -14,6 +14,7 @@
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#include <stdint.h>
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#include <avr/io.h>
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#include <avr/interrupt.h>
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#include <avr/pgmspace.h>
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#define F_CPU 8000000UL
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@ -50,10 +51,15 @@ int main(void)
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usb_init();
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dfu_init();
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/* move interrupt vectors to the boot loader */
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MCUCR = 1 << IVCE;
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MCUCR = 1 << IVSEL;
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sei();
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led(1);
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while (loop != MS_TO_LOOPS(2000)) {
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usb_poll();
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if (dfu.state == dfuIDLE && pgm_read_byte(zero) != 0xff)
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loop++;
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else
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@ -62,6 +68,8 @@ int main(void)
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led(0);
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cli();
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usb_reset();
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run_payload();
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@ -24,6 +24,7 @@
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#include <util/delay.h>
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#include <avr/io.h>
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#include <avr/interrupt.h>
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#include "usb.h"
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#include "../board.h"
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@ -177,14 +178,17 @@ static void ep_init(void)
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while (!(UESTA0X & (1 << CFGOK)));
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UEIENX =
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(1 << RXSTPE) | (1 << RXOUTE) | (1 << STALLEDE) | (1 << TXINE);
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eps[0].state = EP_IDLE;
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eps[0].size = 64;
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}
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void usb_poll(void)
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ISR(USB_GEN_vect)
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{
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uint8_t flags, i;
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uint8_t flags;
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flags = UDINT;
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if (flags & (1 << EORSTI)) {
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@ -193,11 +197,17 @@ void usb_poll(void)
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ep_init();
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UDINT = ~(1 << EORSTI);
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}
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}
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ISR(USB_COM_vect)
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{
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uint8_t flags, i;
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flags = UEINT;
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for (i = 0; i != NUM_EPS; i++)
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if (1 || flags & (1 << i))
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if (flags & (1 << i))
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handle_ep(i);
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/* @@@ USB bus reset */
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}
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@ -223,6 +233,7 @@ void usb_init(void)
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USBCON &= ~(1 << FRZCLK); /* thaw the clock */
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UDCON &= ~(1 << DETACH); /* attach the pull-up */
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UDIEN = 1 << EORSTE; /* enable device interrupts */
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// UDCON |= 1 << RSTCPU; /* reset CPU on bus reset */
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ep_init();
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@ -152,6 +152,5 @@ int handle_setup(const struct setup_request *setup);
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int set_addr(uint8_t addr);
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void usb_reset(void);
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void usb_init(void);
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void usb_poll(void);
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#endif /* !USB_H */
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