Port to IMXRT (work in progress)

USBHost_t36.h

@@ -26,9 +26,10 @@
 
 #include <stdint.h>
 
-#if !defined(__MK66FX1M0__)
+#if !defined(__MK66FX1M0__) && !defined(__IMXRT1052__) && !defined(__IMXRT1062__)
 #error "USBHost_t36 only works with Teensy 3.6.  Please select it in Tools > Boards"
 #endif
+#include "utility/imxrt_usbhs.h"
 
 // Dear inquisitive reader, USB is a complex protocol defined with
 // very specific terminology.  To have any chance of understand this

ehci.cpp

@@ -106,6 +106,7 @@ static void remove_from_periodic_followup_list(Transfer_t *transfer);
 
 void USBHost::begin()
 {
+#if defined(__MK66FX1M0__)
 	// Teensy 3.6 has USB host power controlled by PTE6
 	PORTE_PCR6 = PORT_PCR_MUX(1);
 	GPIOE_PDDR |= (1<<6);
@@ -150,6 +151,15 @@ void USBHost::begin()
 
 	// turn on power to PHY
 	USBPHY_PWD = 0;
+
+#elif defined(__IMXRT1052__) || defined(__IMXRT1062__)
+	// Teensy 4.0 PLL & USB PHY powerup
+
+
+
+
+
+#endif
 	delay(10);
 
 	// sanity check, connect 470K pullup & 100K pulldown and watch D+ voltage change

utility/imxrt_usbhs.h

@@ -0,0 +1,76 @@
+#ifndef IMXRT_USBHS_H_
+#define IMXRT_USBHS_H_
+
+#if defined(__IMXRT1052__) || defined(__IMXRT1062__)
+ 
+// Allow USB host code written for "USBHS" on Teensy 3.6 to compile for "USB2" on Teensy 4.0
+
+#define IRQ_USBHS		IRQ_USB2
+
+#define USBPHY_CTRL		USBPHY2_CTRL
+#define USBPHY_CTRL_CLR		USBPHY2_CTRL_CLR
+#define USBPHY_CTRL_SET		USBPHY2_CTRL_SET
+
+#define USBHS_USBCMD		USB2_USBCMD
+#define USBHS_USBSTS		USB2_USBSTS
+#define USBHS_USBINTR		USB2_USBINTR
+#define USBHS_FRINDEX		USB2_FRINDEX
+#define USBHS_PERIODICLISTBASE	USB2_PERIODICLISTBASE
+#define USBHS_ASYNCLISTADDR	USB2_ASYNCLISTADDR
+#define USBHS_PORTSC1		USB2_PORTSC1
+#define USBHS_USBMODE		USB2_USBMODE
+#define USBHS_GPTIMER0CTL	USB2_GPTIMER0CTRL
+#define USBHS_GPTIMER0LD	USB2_GPTIMER0LD
+#define USBHS_GPTIMER1CTL	USB2_GPTIMER1CTRL
+#define USBHS_GPTIMER1LD	USB2_GPTIMER1LD
+
+#define USBHS_USBCMD_ASE	USB_USBCMD_ASE
+#define USBHS_USBCMD_IAA	USB_USBCMD_IAA
+#define USBHS_USBCMD_RST	USB_USBCMD_RST
+#define USBHS_USBCMD_ITC(n)	USB_USBCMD_ITC(n)
+#define USBHS_USBCMD_RS		USB_USBCMD_RS
+#define USBHS_USBCMD_ASP(n)	USB_USBCMD_ASP(n)
+#define USBHS_USBCMD_ASPE	USB_USBCMD_ASPE
+#define USBHS_USBCMD_PSE	USB_USBCMD_PSE
+#define USBHS_USBCMD_FS2	USB_USBCMD_FS_2
+#define USBHS_USBCMD_FS(n)	USB_USBCMD_FS_1(n)		
+
+#define USBHS_USBSTS_AAI	USB_USBSTS_AAI
+#define USBHS_USBSTS_AS		USB_USBSTS_AS
+// UAI & UPI bits are undocumented in IMXRT, K66 pg 1602, RT1050 pg 2374
+#define USBHS_USBSTS_UAI	((uint32_t)(1<<18))
+#define USBHS_USBSTS_UPI	((uint32_t)(1<<19))
+#define USBHS_USBSTS_UEI	USB_USBSTS_UEI
+#define USBHS_USBSTS_PCI	USB_USBSTS_PCI
+#define USBHS_USBSTS_TI0	USB_USBSTS_TI0
+#define USBHS_USBSTS_TI1	USB_USBSTS_TI1
+
+#define USBHS_USBINTR_PCE	USB_USBINTR_PCE
+#define USBHS_USBINTR_TIE0	USB_USBINTR_TIE0
+#define USBHS_USBINTR_TIE1	USB_USBINTR_TIE1
+#define USBHS_USBINTR_UEE	USB_USBINTR_UEE
+#define USBHS_USBINTR_SEE	USB_USBINTR_SEE
+#define USBHS_USBINTR_UPIE	USB_USBINTR_UPIE
+#define USBHS_USBINTR_UAIE	USB_USBINTR_UAIE
+
+#define USBHS_PORTSC_PP		USB_PORTSC1_PP
+#define USBHS_PORTSC_OCC	USB_PORTSC1_OCC
+#define USBHS_PORTSC_PEC	USB_PORTSC1_PEC
+#define USBHS_PORTSC_CSC	USB_PORTSC1_CSC
+#define USBHS_PORTSC_CCS	USB_PORTSC1_CCS
+#define USBHS_PORTSC_PE		USB_PORTSC1_PE
+#define USBHS_PORTSC_HSP	USB_PORTSC1_HSP
+#define USBHS_PORTSC_FPR	USB_PORTSC1_FPR
+#define USBHS_PORTSC_PR		USB_PORTSC1_PR
+
+#define USBHS_GPTIMERCTL_RST	USB_GPTIMERCTRL_GPTRST
+#define USBHS_GPTIMERCTL_RUN	USB_GPTIMERCTRL_GPTRUN
+
+#define USBHS_USBMODE_CM(n)	USB_USBMODE_CM(n)
+
+// TODO: what is the best setting for this register on IMXRT ???
+#define USBHS_USB_SBUSCFG	USB2_SBUSCFG
+
+
+#endif // __IMXRT1052__ or __IMXRT1062__
+#endif // IMXRT_USBHS_H_