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Merge pull request #700 from hathach/fix-rp2040-bus-reset

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fix enum walkaround forever check for SE0 when pull up is disabled
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Ha Thach 2021-03-04 21:01:39 +07:00 committed by GitHub
commit 5285548c75
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4 changed files with 37 additions and 16 deletions
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4
hw/bsp/rp2040/family.c
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@ -80,8 +80,8 @@ bool __no_inline_not_in_flash_func(get_bootsel_button)() {
#if defined(LOGGER_RTT)
// Logging with RTT
// If RTT Control Block is not found by 'Auto Detection`
// try to use 'Search Range` with '0x20000000 0x10000'
// - If RTT Control Block is not found by 'Auto Detection` try to use 'Search Range` with '0x20000000 0x10000'
// - SWD speed is rather slow around 1000Khz
#include "pico/stdio/driver.h"
#include "SEGGER_RTT.h"

1
hw/bsp/rp2040/family.mk
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@ -1,3 +1,4 @@
FAMILY_SUBMODULES = hw/mcu/raspberrypi/pico-sdk
JLINK_DEVICE = rp2040_m0_0
PYOCD_TARGET = rp2040

43
src/portable/raspberrypi/rp2040/dcd_rp2040.c
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@ -312,18 +312,7 @@ static void dcd_rp2040_irq(void)
hw_handle_buff_status();
}
if (status & USB_INTS_BUS_RESET_BITS)
{
pico_trace("BUS RESET (addr %d -> %d)\n", assigned_address, 0);
usb_hw->dev_addr_ctrl = 0;
handled |= USB_INTS_BUS_RESET_BITS;
dcd_event_bus_reset(0, TUSB_SPEED_FULL, true);
usb_hw_clear->sie_status = USB_SIE_STATUS_BUS_RESET_BITS;
#if TUD_OPT_RP2040_USB_DEVICE_ENUMERATION_FIX
rp2040_usb_device_enumeration_fix();
#endif
}
// SE0 for 2 us or more, usually together with Bus Reset
if (status & USB_INTS_DEV_CONN_DIS_BITS)
{
handled |= USB_INTS_DEV_CONN_DIS_BITS;
@ -340,7 +329,35 @@ static void dcd_rp2040_irq(void)
usb_hw_clear->sie_status = USB_SIE_STATUS_CONNECTED_BITS;
}
#if 0 // TODO Enable SUSPEND & RESUME interrupt and test later on with/without VBUS detection
// SE0 for 2.5 us or more
if (status & USB_INTS_BUS_RESET_BITS)
{
pico_trace("BUS RESET\n");
usb_hw->dev_addr_ctrl = 0;
handled |= USB_INTS_BUS_RESET_BITS;
dcd_event_bus_reset(0, TUSB_SPEED_FULL, true);
usb_hw_clear->sie_status = USB_SIE_STATUS_BUS_RESET_BITS;
#if TUD_OPT_RP2040_USB_DEVICE_ENUMERATION_FIX
// Only run enumeration walk-around if pull up is enabled
if ( usb_hw->sie_ctrl & USB_SIE_CTRL_PULLUP_EN_BITS )
{
rp2040_usb_device_enumeration_fix();
}
#endif
}
#if 0
// TODO Enable SUSPEND & RESUME interrupt and test later on with/without VBUS detection
/* Note from pico datasheet 4.1.2.6.4 (v1.2)
* If you enable the suspend interrupt, it is likely you will see a suspend interrupt when
* the device is first connected but the bus is idle. The bus can be idle for a few ms before
* the host begins sending start of frame packets. You will also see a suspend interrupt
* when the device is disconnected if you do not have a VBUS detect circuit connected. This is
* because without VBUS detection, it is impossible to tell the difference between
* being disconnected and suspended.
*/
if (status & USB_INTS_DEV_SUSPEND_BITS)
{
handled |= USB_INTS_DEV_SUSPEND_BITS;

5
src/portable/raspberrypi/rp2040/rp2040_usb.c
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@ -60,8 +60,11 @@ void rp2040_usb_init(void)
memset(usb_hw, 0, sizeof(*usb_hw));
memset(usb_dpram, 0, sizeof(*usb_dpram));
// Mux to phy
// Mux the controller to the onboard usb phy
usb_hw->muxing = USB_USB_MUXING_TO_PHY_BITS | USB_USB_MUXING_SOFTCON_BITS;
// Force VBUS detect so the device thinks it is plugged into a host
// TODO support VBUs detect
usb_hw->pwr = USB_USB_PWR_VBUS_DETECT_BITS | USB_USB_PWR_VBUS_DETECT_OVERRIDE_EN_BITS;
}