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Platform updates (#611)

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* Platform updates
 - Add PICO_RP2040=1 to rp2040 builds
 - Add new PICO_RP2040_B0/1/2_SUPPORTED macros and retailer chip specific code to use
 - Add doxygen to platform.h
 - Make pico.h includable from assembly (because header order is important and tricky) - split out platform_asm.h
 - Switch to using PICO_RP2040_B0_SUPPORTED in board headers
This commit is contained in:
Graham Sanderson
2021-10-25 12:26:06 -05:00
committed by GitHub
parent 723dfd04ff
commit e850214938
41 changed files with 431 additions and 277 deletions
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23
src/rp2_common/pico_fix/rp2040_usb_device_enumeration/rp2040_usb_device_enumeration.c
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@ -22,16 +22,21 @@ static void hw_enumeration_fix_force_ls_j(void);
static void hw_enumeration_fix_finish(void);
void rp2040_usb_device_enumeration_fix(void) {
// After coming out of reset, the hardware expects 800us of LS_J (linestate J) time
// before it will move to the connected state. However on a hub that broadcasts packets
// for other devices this isn't the case. The plan here is to wait for the end of the bus
// reset, force an LS_J for 1ms and then switch control back to the USB phy. Unfortunately
// this requires us to use GPIO15 as there is no other way to force the input path.
// We only need to force DP as DM can be left at zero. It will be gated off by GPIO
// logic if it isn't func selected.
#if PICO_RP2040_B0_SUPPORTED || PICO_RP2040_B1_SUPPORTED
// Actually check for B0/B1 h/w
if (rp2040_chip_version() == 1) {
// After coming out of reset, the hardware expects 800us of LS_J (linestate J) time
// before it will move to the connected state. However on a hub that broadcasts packets
// for other devices this isn't the case. The plan here is to wait for the end of the bus
// reset, force an LS_J for 1ms and then switch control back to the USB phy. Unfortunately
// this requires us to use GPIO15 as there is no other way to force the input path.
// We only need to force DP as DM can be left at zero. It will be gated off by GPIO
// logic if it isn't func selected.
// Wait SE0 phase will call force ls_j phase which will call finish phase
hw_enumeration_fix_wait_se0();
// Wait SE0 phase will call force ls_j phase which will call finish phase
hw_enumeration_fix_wait_se0();
}
#endif
}
static inline uint8_t hw_line_state(void) {