epagris/flatUSB
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- PHY configuration constants corrected, startup delay added

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- CMake custom target name option added
This commit is contained in:
Wiesner András 2024-06-10 14:07:22 +02:00
parent e257ca3f39
commit dad59f4b3e
1 changed files with 30 additions and 11 deletions
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35
usb_driver.c
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@ -43,7 +43,7 @@ static const char *FIFO_STATUS_STR[6] = {
// ---------------
#if defined(STM32H745xx) || defined(STM32H743xx)
#define USB_GPIO_AF (GPIO_AF10_OTG1_FS)
#define USB_GPIO_AF (GPIO_AF10_OTG2_FS)
#elif defined(STM32F407xx)
#define USB_GPIO_AF (GPIO_AF10_OTG_FS)
#endif
@ -56,11 +56,16 @@ void usbdrv_gpio_init() {
GPIO_InitTypeDef gpio_init;
gpio_init.Mode = GPIO_MODE_AF_PP;
gpio_init.Pin = GPIO_PIN_11 | GPIO_PIN_12;
gpio_init.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
gpio_init.Pull = GPIO_NOPULL;
gpio_init.Alternate = USB_GPIO_AF;
/* Pin initializations cannot be OR-ed together! */
gpio_init.Pin = GPIO_PIN_11;
HAL_GPIO_Init(GPIOA, &gpio_init); // USB D-
gpio_init.Pin = GPIO_PIN_12;
HAL_GPIO_Init(GPIOA, &gpio_init); // USB D+
// HAL_GPIO_WritePin(GPIOA, GPIO_PIN_11, GPIO_PIN_SET);
@ -127,20 +132,33 @@ void usbdrv_init_global_state() {
#endif
}
#if defined(STM32H745xx) || defined(STM32H743xx)
#define TOCAL_VALUE (0x00)
#define TRDT_VALUE (0x05)
#elif defined(STM32F407xx)
#define TOCAL_VALUE (0x07)
#define TRDT_VALUE (0x06)
#endif
// ---------------
#define USB_LINESPEED_FULL_SPEED (0b11)
// initialize USB peripheral
void usbdrv_periph_init() {
#if defined(STM32H745xx) || defined(STM32H743xx)
HAL_PWREx_EnableUSBVoltageDetector();
WAIT_FOR_nBIT(PWR->CR3, PWR_CR3_USB33RDY);
#endif
__HAL_RCC_USB_OTG_FS_CLK_ENABLE(); // enable clock on USB peripheral
HAL_Delay(1000);
//__HAL_RCC_USB_OTG_FS_ULPI_CLK_ENABLE();
//__HAL_RCC_USB_OTG_FS_FORCE_RESET();
//__HAL_RCC_USB_OTG_FS_RELEASE_RESET();
// HAL_PWREx_EnableUSBReg();
// HAL_PWREx_EnableUSBVoltageDetector();
#if defined(STM32H745xx) || defined(STM32H743xx)
SET_BIT(USBG->GUSBCFG, USB_OTG_GUSBCFG_PHYSEL); // select the internal FS PHY
@ -152,17 +170,18 @@ void usbdrv_periph_init() {
CLEAR_BIT(USBG->GAHBCFG, USB_OTG_GAHBCFG_GINT); // mask all interrupts for now
CLEAR_BIT(USBG->GUSBCFG, USB_OTG_GUSBCFG_HNPCAP | USB_OTG_GUSBCFG_SRPCAP); // disable HNP and SRP
WRITE_FIELD(USBG->GUSBCFG, USB_OTG_GUSBCFG_TRDT, 0x06); // set TRDT according to the RM
WRITE_FIELD(USBG->GUSBCFG, USB_OTG_GUSBCFG_TOCAL, 0x07); // set TOCAL
WRITE_FIELD(USBG->GUSBCFG, USB_OTG_GUSBCFG_TRDT, TRDT_VALUE); // set TRDT according to the RM
WRITE_FIELD(USBG->GUSBCFG, USB_OTG_GUSBCFG_TOCAL, TOCAL_VALUE); // set TOCAL
SET_BIT(USBG->GUSBCFG, USB_OTG_GUSBCFG_FDMOD); // force Device mode
#if defined(STM32H745xx) || defined(STM32H743xx)
CLEAR_BIT(USBG->GCCFG, USB_OTG_GCCFG_VBDEN); // turn off VBUSSENSE
CLEAR_BIT(USBG->GCCFG, USB_OTG_GCCFG_VBDEN); // turn on VBUSSENSE
SET_BIT(USBG->GOTGCTL, USB_OTG_GOTGCTL_BVALOEN | USB_OTG_GOTGCTL_BVALOVAL); // force B-session
#elif defined(STM32F407xx)
SET_BIT(USBG->GCCFG, USB_OTG_GCCFG_NOVBUSSENS); // turn off VBUSSENSE
#endif
// HAL_Delay(50); // it takes time to forcing Device mode takes effect
SET_BIT(USBD->DCTL, USB_OTG_DCTL_SDIS); // soft disconnect peripheral (should be upper, but since it's controlled by a Device register, cannot be set before switching to device mode)