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CHG: restored the wait in flash-mode. Its waiting for the device to "reboot"..

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CHG: usb_Cdc,   :  usb specs say 100ms delay. Previous delay was much longer...
This commit is contained in:
iceman1001 2017-10-17 23:09:32 +02:00
parent dc7473135c
commit 1f0a1edfbe
3 changed files with 29 additions and 4 deletions
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1
bootrom/Makefile
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@ -11,6 +11,7 @@ ARMSRC =
THUMBSRC = cmd.c \
usb_cdc.c \
bootrom.c
ASMSRC = ram-reset.s flash-reset.s
## There is a strange bug with the linker: Sometimes it will not emit the glue to call

3
bootrom/bootrom.c
View file

@ -193,7 +193,8 @@ static void flash_mode(int externally_entered) {
byte_t rx[sizeof(UsbCommand)];
usb_enable();
//for (volatile size_t i=0; i<0x100000; i++) {};
for (volatile size_t i=0; i<0x100000; i++) {};
for(;;) {
WDT_HIT();

29
common/usb_cdc.c
View file

@ -33,7 +33,6 @@
*/
#include "usb_cdc.h"
/*
AT91SAM7S256 USB Device Port
• Embedded 328-byte dual-port RAM for endpoints
@ -442,6 +441,29 @@ uint8_t btConfiguration = 0;
uint8_t btConnection = 0;
uint8_t btReceiveBank = AT91C_UDP_RX_DATA_BK0;
static void SpinDelay(int ms) {
int us = ms * 1000;
int ticks = (48 * us) >> 10;
// Borrow a PWM unit for my real-time clock
AT91C_BASE_PWMC->PWMC_ENA = PWM_CHANNEL(0);
// 48 MHz / 1024 gives 46.875 kHz
AT91C_BASE_PWMC_CH0->PWMC_CMR = PWM_CH_MODE_PRESCALER(10);
AT91C_BASE_PWMC_CH0->PWMC_CDTYR = 0;
AT91C_BASE_PWMC_CH0->PWMC_CPRDR = 0xffff;
uint16_t start = AT91C_BASE_PWMC_CH0->PWMC_CCNTR;
for(;;) {
uint16_t now = AT91C_BASE_PWMC_CH0->PWMC_CCNTR;
if (now == (uint16_t)(start + ticks))
return;
WDT_HIT();
}
}
//*----------------------------------------------------------------------------
//* \fn usb_disable
//* \brief This function deactivates the USB device
@ -480,8 +502,9 @@ void usb_enable() {
// Disconnect and reconnect USB controller for 100ms
usb_disable();
SpinDelay(100);
// Wait for a short while
for (volatile size_t i=0; i<0x100000; i++) {};
//for (volatile size_t i=0; i<0x100000; i++) {};
// Reconnect USB reconnect
AT91C_BASE_PIOA->PIO_SODR = GPIO_USB_PU;
@ -550,7 +573,7 @@ bool usb_check() {
else if (isr & AT91C_UDP_EPINT0) {
pUdp->UDP_ICR = AT91C_UDP_EPINT0;
AT91F_CDC_Enumerate();
pUdp->UDP_ICR |= AT91C_UDP_EPINT0;
//pUdp->UDP_ICR |= AT91C_UDP_EPINT0;
}
else if (isr & AT91C_UDP_EPINT3 ) {
pUdp->UDP_ICR = AT91C_UDP_EPINT3;