mbed official / USBHost

USBHost library. NOTE: This library is only officially supported on the LPC1768 platform. For more information, please see the handbook page.

Dependencies:   FATFileSystem mbed-rtos

Dependents:   BTstack WallbotWii SD to Flash Data Transfer USBHost-MSD_HelloWorld ... more

Legacy Warning

This is an mbed 2 library. To learn more about mbed OS 5, visit the docs.

Pull requests against this repository are no longer supported. Please raise against mbed OS 5 as documented above.

targets/TARGET_STM/TARGET_STM32L4/TARGET_STM32L475xG/TARGET_DISCO_L475VG_IOT01A/USBHALHost_DISCO_L475VG_IOT01A.h@40:7c3b59bb364e, 2017-08-17 (annotated)

Committer:
Anna Bridge
Date:
Thu Aug 17 18:12:22 2017 +0100
Revision:
40:7c3b59bb364e
DISCO_L475VG_IOT01A: Add support of USBHost

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Anna Bridge 40:7c3b59bb364e 1 /* Copyright (c) 2017 mbed.org, MIT License
Anna Bridge 40:7c3b59bb364e 2 *
Anna Bridge 40:7c3b59bb364e 3 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
Anna Bridge 40:7c3b59bb364e 4 * and associated documentation files (the "Software"), to deal in the Software without
Anna Bridge 40:7c3b59bb364e 5 * restriction, including without limitation the rights to use, copy, modify, merge, publish,
Anna Bridge 40:7c3b59bb364e 6 * distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
Anna Bridge 40:7c3b59bb364e 7 * Software is furnished to do so, subject to the following conditions:
Anna Bridge 40:7c3b59bb364e 8 *
Anna Bridge 40:7c3b59bb364e 9 * The above copyright notice and this permission notice shall be included in all copies or
Anna Bridge 40:7c3b59bb364e 10 * substantial portions of the Software.
Anna Bridge 40:7c3b59bb364e 11 *
Anna Bridge 40:7c3b59bb364e 12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
Anna Bridge 40:7c3b59bb364e 13 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
Anna Bridge 40:7c3b59bb364e 14 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
Anna Bridge 40:7c3b59bb364e 15 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
Anna Bridge 40:7c3b59bb364e 16 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Anna Bridge 40:7c3b59bb364e 17 */
Anna Bridge 40:7c3b59bb364e 18 #ifndef USBHALHOST_DISCO_L475VG_IOT01A
Anna Bridge 40:7c3b59bb364e 19 #define USBHALHOST_DISCO_L475VG_IOT01A
Anna Bridge 40:7c3b59bb364e 20
Anna Bridge 40:7c3b59bb364e 21 #define USBHAL_IRQn OTG_FS_IRQn
Anna Bridge 40:7c3b59bb364e 22
Anna Bridge 40:7c3b59bb364e 23 #define HCCA_SIZE sizeof(HCD_HandleTypeDef)
Anna Bridge 40:7c3b59bb364e 24 #define ED_SIZE sizeof(HCED)
Anna Bridge 40:7c3b59bb364e 25 #define TD_SIZE sizeof(HCTD)
Anna Bridge 40:7c3b59bb364e 26
Anna Bridge 40:7c3b59bb364e 27 #define TOTAL_SIZE (HCCA_SIZE + (MAX_ENDPOINT*ED_SIZE) + (MAX_TD*TD_SIZE))
Anna Bridge 40:7c3b59bb364e 28
Anna Bridge 40:7c3b59bb364e 29 /* STM device FS have 11 channels (definition is for 60 channels) */
Anna Bridge 40:7c3b59bb364e 30 static volatile uint8_t usb_buf[TOTAL_SIZE];
Anna Bridge 40:7c3b59bb364e 31
Anna Bridge 40:7c3b59bb364e 32 typedef struct {
Anna Bridge 40:7c3b59bb364e 33 /* store the request ongoing on each endpoit */
Anna Bridge 40:7c3b59bb364e 34 /* 1st field of structure avoid giving knowledge of all structure to
Anna Bridge 40:7c3b59bb364e 35 * endpoint */
Anna Bridge 40:7c3b59bb364e 36 volatile uint32_t addr[MAX_ENDPOINT];
Anna Bridge 40:7c3b59bb364e 37 USBHALHost *inst;
Anna Bridge 40:7c3b59bb364e 38 void (USBHALHost::*deviceConnected)(int hub, int port, bool lowSpeed, USBHostHub * hub_parent);
Anna Bridge 40:7c3b59bb364e 39 void (USBHALHost::*deviceDisconnected)(int hub, int port, USBHostHub * hub_parent, volatile uint32_t addr);
Anna Bridge 40:7c3b59bb364e 40 void (USBHALHost::*transferCompleted)(volatile uint32_t addr);
Anna Bridge 40:7c3b59bb364e 41 } USBHALHost_Private_t;
Anna Bridge 40:7c3b59bb364e 42
Anna Bridge 40:7c3b59bb364e 43 static gpio_t gpio_powerpin;
Anna Bridge 40:7c3b59bb364e 44
Anna Bridge 40:7c3b59bb364e 45 #define USB_POWER_OFF 1
Anna Bridge 40:7c3b59bb364e 46 #define USB_POWER_ON 0
Anna Bridge 40:7c3b59bb364e 47 #define USB_POWERPIN_CONFIG {gpio_init_out_ex(&gpio_powerpin, PD_12, USB_POWER_OFF);}
Anna Bridge 40:7c3b59bb364e 48
Anna Bridge 40:7c3b59bb364e 49
Anna Bridge 40:7c3b59bb364e 50 void usb_vbus( uint8_t state)
Anna Bridge 40:7c3b59bb364e 51 {
Anna Bridge 40:7c3b59bb364e 52 if (state == 0) {
Anna Bridge 40:7c3b59bb364e 53 gpio_write(&gpio_powerpin, USB_POWER_OFF);
Anna Bridge 40:7c3b59bb364e 54 } else {
Anna Bridge 40:7c3b59bb364e 55 gpio_write(&gpio_powerpin, USB_POWER_ON);
Anna Bridge 40:7c3b59bb364e 56 }
Anna Bridge 40:7c3b59bb364e 57 wait(0.2);
Anna Bridge 40:7c3b59bb364e 58 }
Anna Bridge 40:7c3b59bb364e 59
Anna Bridge 40:7c3b59bb364e 60
Anna Bridge 40:7c3b59bb364e 61 USBHALHost::USBHALHost()
Anna Bridge 40:7c3b59bb364e 62 {
Anna Bridge 40:7c3b59bb364e 63 instHost = this;
Anna Bridge 40:7c3b59bb364e 64 HCD_HandleTypeDef *hhcd;
Anna Bridge 40:7c3b59bb364e 65 USBHALHost_Private_t *HALPriv = new(USBHALHost_Private_t);
Anna Bridge 40:7c3b59bb364e 66
Anna Bridge 40:7c3b59bb364e 67 memset(HALPriv, 0, sizeof(USBHALHost_Private_t));
Anna Bridge 40:7c3b59bb364e 68 memInit();
Anna Bridge 40:7c3b59bb364e 69 memset((void*)usb_hcca, 0, HCCA_SIZE);
Anna Bridge 40:7c3b59bb364e 70
Anna Bridge 40:7c3b59bb364e 71 hhcd = (HCD_HandleTypeDef *)usb_hcca;
Anna Bridge 40:7c3b59bb364e 72 hhcd->Instance = USB_OTG_FS;
Anna Bridge 40:7c3b59bb364e 73 hhcd->pData = (void*)HALPriv;
Anna Bridge 40:7c3b59bb364e 74 hhcd->Init.Host_channels = 11;
Anna Bridge 40:7c3b59bb364e 75
Anna Bridge 40:7c3b59bb364e 76 /* for now failed with dma */
Anna Bridge 40:7c3b59bb364e 77 hhcd->Init.dma_enable = 0;
Anna Bridge 40:7c3b59bb364e 78 hhcd->Init.speed = HCD_SPEED_FULL;
Anna Bridge 40:7c3b59bb364e 79 hhcd->Init.phy_itface = HCD_PHY_EMBEDDED;
Anna Bridge 40:7c3b59bb364e 80 hhcd->Init.use_external_vbus = 1;
Anna Bridge 40:7c3b59bb364e 81
Anna Bridge 40:7c3b59bb364e 82 HALPriv->inst = this;
Anna Bridge 40:7c3b59bb364e 83 HALPriv->deviceConnected = &USBHALHost::deviceConnected;
Anna Bridge 40:7c3b59bb364e 84 HALPriv->deviceDisconnected = &USBHALHost::deviceDisconnected;
Anna Bridge 40:7c3b59bb364e 85 HALPriv->transferCompleted = &USBHALHost::transferCompleted;
Anna Bridge 40:7c3b59bb364e 86
Anna Bridge 40:7c3b59bb364e 87 for (int i = 0; i < MAX_ENDPOINT; i++) {
Anna Bridge 40:7c3b59bb364e 88 edBufAlloc[i] = false;
Anna Bridge 40:7c3b59bb364e 89 HALPriv->addr[i]=(uint32_t)-1;
Anna Bridge 40:7c3b59bb364e 90 }
Anna Bridge 40:7c3b59bb364e 91
Anna Bridge 40:7c3b59bb364e 92 for (int i = 0; i < MAX_TD; i++) {
Anna Bridge 40:7c3b59bb364e 93 tdBufAlloc[i] = false;
Anna Bridge 40:7c3b59bb364e 94 }
Anna Bridge 40:7c3b59bb364e 95
Anna Bridge 40:7c3b59bb364e 96 __HAL_RCC_PWR_CLK_ENABLE();
Anna Bridge 40:7c3b59bb364e 97
Anna Bridge 40:7c3b59bb364e 98 #ifdef TARGET_STM32L4
Anna Bridge 40:7c3b59bb364e 99 HAL_PWREx_EnableVddUSB();
Anna Bridge 40:7c3b59bb364e 100 #endif
Anna Bridge 40:7c3b59bb364e 101
Anna Bridge 40:7c3b59bb364e 102 /* Configure USB GPIOs */
Anna Bridge 40:7c3b59bb364e 103 __HAL_RCC_GPIOA_CLK_ENABLE();
Anna Bridge 40:7c3b59bb364e 104 pin_function(PA_11, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF10_OTG_FS)); // DM pin
Anna Bridge 40:7c3b59bb364e 105 pin_function(PA_12, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF10_OTG_FS)); // DP pin
Anna Bridge 40:7c3b59bb364e 106 pin_function(PA_9, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF10_OTG_FS)); // VBUS pin
Anna Bridge 40:7c3b59bb364e 107
Anna Bridge 40:7c3b59bb364e 108 /* Configure USB POWER pin */
Anna Bridge 40:7c3b59bb364e 109 USB_POWERPIN_CONFIG;
Anna Bridge 40:7c3b59bb364e 110
Anna Bridge 40:7c3b59bb364e 111 /* Enable USB FS Clocks */
Anna Bridge 40:7c3b59bb364e 112 __HAL_RCC_SYSCFG_CLK_ENABLE();
Anna Bridge 40:7c3b59bb364e 113 __HAL_RCC_USB_OTG_FS_CLK_ENABLE();
Anna Bridge 40:7c3b59bb364e 114
Anna Bridge 40:7c3b59bb364e 115 /* Set USBFS Interrupt priority */
Anna Bridge 40:7c3b59bb364e 116 HAL_NVIC_SetPriority(USBHAL_IRQn, 5, 0);
Anna Bridge 40:7c3b59bb364e 117 NVIC_SetVector(USBHAL_IRQn, (uint32_t)&_usbisr);
Anna Bridge 40:7c3b59bb364e 118 }
Anna Bridge 40:7c3b59bb364e 119
Anna Bridge 40:7c3b59bb364e 120 #endif // USBHALHOST_DISCO_L475VG_IOT01A