Support Opta

Since host and device are shared, deinit device stack and configure the FUSB to act as SRC before any further operation

Author: facchinm

src/targets/TARGET_STM/USBHALHost_STM.cpp

@@ -156,9 +156,44 @@ void HAL_HCD_HC_NotifyURBChange_Callback(HCD_HandleTypeDef *hhcd, uint8_t chnum,
 
 USBHALHost *USBHALHost::instHost;
 
+#if defined(TARGET_OPTA)
+#include <usb_phy_api.h>
+#include <Wire.h>
+#endif
 
 void USBHALHost::init()
 {
+#if defined(TARGET_OPTA)
+    get_usb_phy()->deinit();
+
+    Wire1.begin();
+
+    // reset FUSB registers
+    Wire1.beginTransmission(0x21);
+    Wire1.write(0x5);
+    Wire1.write(0x1);
+    Wire1.endTransmission();
+
+    Wire1.beginTransmission(0x21);
+    Wire1.write(0x5);
+    Wire1.write(0x0);
+    Wire1.endTransmission();
+
+    delay(100);
+
+    // setup port as SRC
+    Wire1.beginTransmission(0x21);
+    Wire1.write(0x2);
+    Wire1.write(0x3);
+    Wire1.endTransmission();
+
+    // enable interrupts
+    Wire1.beginTransmission(0x21);
+    Wire1.write(0x3);
+    Wire1.write(1 << 1);
+    Wire1.endTransmission();
+#endif
+
     NVIC_DisableIRQ(USBHAL_IRQn);
     NVIC_SetVector(USBHAL_IRQn, (uint32_t)(_usbisr));
     HAL_HCD_Init((HCD_HandleTypeDef *) usb_hcca);

src/targets/TARGET_STM/USBHALHost_STM.h

@@ -127,6 +127,11 @@ static gpio_t gpio_powerpin;
 #define USB_POWER_OFF 1
 #define USB_POWERPIN_CONFIG {__HAL_RCC_GPIOJ_CLK_ENABLE();gpio_init_out_ex(&gpio_powerpin, PJ_6, USB_POWER_OFF);}
 
+#elif defined(TARGET_OPTA)
+#define USB_POWER_ON  0
+#define USB_POWER_OFF 1
+#define USB_POWERPIN_CONFIG {__HAL_RCC_GPIOG_CLK_ENABLE();gpio_init_out_ex(&gpio_powerpin, PG_1, USB_POWER_OFF);}
+
 #else
 #error "USB power pin is not configured !"
 #endif
@@ -320,7 +325,7 @@ USBHALHost::USBHALHost()
     pin_function(PA_11, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF10_OTG_FS)); // DM
     pin_function(PA_12, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF10_OTG_FS)); // DP
 
-#elif defined(TARGET_PORTENTA_H7_M7) || defined(TARGET_PORTENTA_H7_M4)
+#elif defined(TARGET_PORTENTA_H7_M7) || defined(TARGET_PORTENTA_H7_M4) || defined(TARGET_OPTA)
 
     __HAL_RCC_GPIOA_CLK_ENABLE();
     pin_function(PA_11, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF10_OTG2_FS)); // DM