MyUSBHost library
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USBHost/USBHALHost_LPC17.cpp@27:4206883f4cb7, 2015-01-19 (annotated)
- Committer:
- mbed_official
- Date:
- Mon Jan 19 14:30:37 2015 +0000
- Revision:
- 27:4206883f4cb7
Synchronized with git revision 0ab8d2e6b3d884137dcb5c62d29a07abe132bac7
Full URL: https://github.com/mbedmicro/mbed/commit/0ab8d2e6b3d884137dcb5c62d29a07abe132bac7/
RZ_A1H - Implement some USB functions and fix some bugs about USBHost common codes.
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
mbed_official | 27:4206883f4cb7 | 1 | /* mbed USBHost Library |
mbed_official | 27:4206883f4cb7 | 2 | * Copyright (c) 2006-2013 ARM Limited |
mbed_official | 27:4206883f4cb7 | 3 | * |
mbed_official | 27:4206883f4cb7 | 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
mbed_official | 27:4206883f4cb7 | 5 | * you may not use this file except in compliance with the License. |
mbed_official | 27:4206883f4cb7 | 6 | * You may obtain a copy of the License at |
mbed_official | 27:4206883f4cb7 | 7 | * |
mbed_official | 27:4206883f4cb7 | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
mbed_official | 27:4206883f4cb7 | 9 | * |
mbed_official | 27:4206883f4cb7 | 10 | * Unless required by applicable law or agreed to in writing, software |
mbed_official | 27:4206883f4cb7 | 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
mbed_official | 27:4206883f4cb7 | 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
mbed_official | 27:4206883f4cb7 | 13 | * See the License for the specific language governing permissions and |
mbed_official | 27:4206883f4cb7 | 14 | * limitations under the License. |
mbed_official | 27:4206883f4cb7 | 15 | */ |
mbed_official | 27:4206883f4cb7 | 16 | |
mbed_official | 27:4206883f4cb7 | 17 | #if defined(TARGET_LPC1768) |
mbed_official | 27:4206883f4cb7 | 18 | |
mbed_official | 27:4206883f4cb7 | 19 | #include "mbed.h" |
mbed_official | 27:4206883f4cb7 | 20 | #include "USBHALHost.h" |
mbed_official | 27:4206883f4cb7 | 21 | #include "dbg.h" |
mbed_official | 27:4206883f4cb7 | 22 | |
mbed_official | 27:4206883f4cb7 | 23 | // bits of the USB/OTG clock control register |
mbed_official | 27:4206883f4cb7 | 24 | #define HOST_CLK_EN (1<<0) |
mbed_official | 27:4206883f4cb7 | 25 | #define DEV_CLK_EN (1<<1) |
mbed_official | 27:4206883f4cb7 | 26 | #define PORTSEL_CLK_EN (1<<3) |
mbed_official | 27:4206883f4cb7 | 27 | #define AHB_CLK_EN (1<<4) |
mbed_official | 27:4206883f4cb7 | 28 | |
mbed_official | 27:4206883f4cb7 | 29 | // bits of the USB/OTG clock status register |
mbed_official | 27:4206883f4cb7 | 30 | #define HOST_CLK_ON (1<<0) |
mbed_official | 27:4206883f4cb7 | 31 | #define DEV_CLK_ON (1<<1) |
mbed_official | 27:4206883f4cb7 | 32 | #define PORTSEL_CLK_ON (1<<3) |
mbed_official | 27:4206883f4cb7 | 33 | #define AHB_CLK_ON (1<<4) |
mbed_official | 27:4206883f4cb7 | 34 | |
mbed_official | 27:4206883f4cb7 | 35 | // we need host clock, OTG/portsel clock and AHB clock |
mbed_official | 27:4206883f4cb7 | 36 | #define CLOCK_MASK (HOST_CLK_EN | PORTSEL_CLK_EN | AHB_CLK_EN) |
mbed_official | 27:4206883f4cb7 | 37 | |
mbed_official | 27:4206883f4cb7 | 38 | #define HCCA_SIZE sizeof(HCCA) |
mbed_official | 27:4206883f4cb7 | 39 | #define ED_SIZE sizeof(HCED) |
mbed_official | 27:4206883f4cb7 | 40 | #define TD_SIZE sizeof(HCTD) |
mbed_official | 27:4206883f4cb7 | 41 | |
mbed_official | 27:4206883f4cb7 | 42 | #define TOTAL_SIZE (HCCA_SIZE + (MAX_ENDPOINT*ED_SIZE) + (MAX_TD*TD_SIZE)) |
mbed_official | 27:4206883f4cb7 | 43 | |
mbed_official | 27:4206883f4cb7 | 44 | static volatile uint8_t usb_buf[TOTAL_SIZE] __attribute((section("AHBSRAM1"),aligned(256))); //256 bytes aligned! |
mbed_official | 27:4206883f4cb7 | 45 | |
mbed_official | 27:4206883f4cb7 | 46 | USBHALHost * USBHALHost::instHost; |
mbed_official | 27:4206883f4cb7 | 47 | |
mbed_official | 27:4206883f4cb7 | 48 | USBHALHost::USBHALHost() { |
mbed_official | 27:4206883f4cb7 | 49 | instHost = this; |
mbed_official | 27:4206883f4cb7 | 50 | memInit(); |
mbed_official | 27:4206883f4cb7 | 51 | memset((void*)usb_hcca, 0, HCCA_SIZE); |
mbed_official | 27:4206883f4cb7 | 52 | for (int i = 0; i < MAX_ENDPOINT; i++) { |
mbed_official | 27:4206883f4cb7 | 53 | edBufAlloc[i] = false; |
mbed_official | 27:4206883f4cb7 | 54 | } |
mbed_official | 27:4206883f4cb7 | 55 | for (int i = 0; i < MAX_TD; i++) { |
mbed_official | 27:4206883f4cb7 | 56 | tdBufAlloc[i] = false; |
mbed_official | 27:4206883f4cb7 | 57 | } |
mbed_official | 27:4206883f4cb7 | 58 | } |
mbed_official | 27:4206883f4cb7 | 59 | |
mbed_official | 27:4206883f4cb7 | 60 | void USBHALHost::init() { |
mbed_official | 27:4206883f4cb7 | 61 | NVIC_DisableIRQ(USB_IRQn); |
mbed_official | 27:4206883f4cb7 | 62 | |
mbed_official | 27:4206883f4cb7 | 63 | //Cut power |
mbed_official | 27:4206883f4cb7 | 64 | LPC_SC->PCONP &= ~(1UL<<31); |
mbed_official | 27:4206883f4cb7 | 65 | wait_ms(100); |
mbed_official | 27:4206883f4cb7 | 66 | |
mbed_official | 27:4206883f4cb7 | 67 | // turn on power for USB |
mbed_official | 27:4206883f4cb7 | 68 | LPC_SC->PCONP |= (1UL<<31); |
mbed_official | 27:4206883f4cb7 | 69 | |
mbed_official | 27:4206883f4cb7 | 70 | // Enable USB host clock, port selection and AHB clock |
mbed_official | 27:4206883f4cb7 | 71 | LPC_USB->USBClkCtrl |= CLOCK_MASK; |
mbed_official | 27:4206883f4cb7 | 72 | |
mbed_official | 27:4206883f4cb7 | 73 | // Wait for clocks to become available |
mbed_official | 27:4206883f4cb7 | 74 | while ((LPC_USB->USBClkSt & CLOCK_MASK) != CLOCK_MASK); |
mbed_official | 27:4206883f4cb7 | 75 | |
mbed_official | 27:4206883f4cb7 | 76 | // it seems the bits[0:1] mean the following |
mbed_official | 27:4206883f4cb7 | 77 | // 0: U1=device, U2=host |
mbed_official | 27:4206883f4cb7 | 78 | // 1: U1=host, U2=host |
mbed_official | 27:4206883f4cb7 | 79 | // 2: reserved |
mbed_official | 27:4206883f4cb7 | 80 | // 3: U1=host, U2=device |
mbed_official | 27:4206883f4cb7 | 81 | // NB: this register is only available if OTG clock (aka "port select") is enabled!! |
mbed_official | 27:4206883f4cb7 | 82 | // since we don't care about port 2, set just bit 0 to 1 (U1=host) |
mbed_official | 27:4206883f4cb7 | 83 | LPC_USB->OTGStCtrl |= 1; |
mbed_official | 27:4206883f4cb7 | 84 | |
mbed_official | 27:4206883f4cb7 | 85 | // now that we've configured the ports, we can turn off the portsel clock |
mbed_official | 27:4206883f4cb7 | 86 | LPC_USB->USBClkCtrl &= ~PORTSEL_CLK_EN; |
mbed_official | 27:4206883f4cb7 | 87 | |
mbed_official | 27:4206883f4cb7 | 88 | // configure USB D+/D- pins |
mbed_official | 27:4206883f4cb7 | 89 | // P0[29] = USB_D+, 01 |
mbed_official | 27:4206883f4cb7 | 90 | // P0[30] = USB_D-, 01 |
mbed_official | 27:4206883f4cb7 | 91 | LPC_PINCON->PINSEL1 &= ~((3<<26) | (3<<28)); |
mbed_official | 27:4206883f4cb7 | 92 | LPC_PINCON->PINSEL1 |= ((1<<26) | (1<<28)); |
mbed_official | 27:4206883f4cb7 | 93 | |
mbed_official | 27:4206883f4cb7 | 94 | LPC_USB->HcControl = 0; // HARDWARE RESET |
mbed_official | 27:4206883f4cb7 | 95 | LPC_USB->HcControlHeadED = 0; // Initialize Control list head to Zero |
mbed_official | 27:4206883f4cb7 | 96 | LPC_USB->HcBulkHeadED = 0; // Initialize Bulk list head to Zero |
mbed_official | 27:4206883f4cb7 | 97 | |
mbed_official | 27:4206883f4cb7 | 98 | // Wait 100 ms before apply reset |
mbed_official | 27:4206883f4cb7 | 99 | wait_ms(100); |
mbed_official | 27:4206883f4cb7 | 100 | |
mbed_official | 27:4206883f4cb7 | 101 | // software reset |
mbed_official | 27:4206883f4cb7 | 102 | LPC_USB->HcCommandStatus = OR_CMD_STATUS_HCR; |
mbed_official | 27:4206883f4cb7 | 103 | |
mbed_official | 27:4206883f4cb7 | 104 | // Write Fm Interval and Largest Data Packet Counter |
mbed_official | 27:4206883f4cb7 | 105 | LPC_USB->HcFmInterval = DEFAULT_FMINTERVAL; |
mbed_official | 27:4206883f4cb7 | 106 | LPC_USB->HcPeriodicStart = FI * 90 / 100; |
mbed_official | 27:4206883f4cb7 | 107 | |
mbed_official | 27:4206883f4cb7 | 108 | // Put HC in operational state |
mbed_official | 27:4206883f4cb7 | 109 | LPC_USB->HcControl = (LPC_USB->HcControl & (~OR_CONTROL_HCFS)) | OR_CONTROL_HC_OPER; |
mbed_official | 27:4206883f4cb7 | 110 | // Set Global Power |
mbed_official | 27:4206883f4cb7 | 111 | LPC_USB->HcRhStatus = OR_RH_STATUS_LPSC; |
mbed_official | 27:4206883f4cb7 | 112 | |
mbed_official | 27:4206883f4cb7 | 113 | LPC_USB->HcHCCA = (uint32_t)(usb_hcca); |
mbed_official | 27:4206883f4cb7 | 114 | |
mbed_official | 27:4206883f4cb7 | 115 | // Clear Interrrupt Status |
mbed_official | 27:4206883f4cb7 | 116 | LPC_USB->HcInterruptStatus |= LPC_USB->HcInterruptStatus; |
mbed_official | 27:4206883f4cb7 | 117 | |
mbed_official | 27:4206883f4cb7 | 118 | LPC_USB->HcInterruptEnable = OR_INTR_ENABLE_MIE | OR_INTR_ENABLE_WDH | OR_INTR_ENABLE_RHSC; |
mbed_official | 27:4206883f4cb7 | 119 | |
mbed_official | 27:4206883f4cb7 | 120 | // Enable the USB Interrupt |
mbed_official | 27:4206883f4cb7 | 121 | NVIC_SetVector(USB_IRQn, (uint32_t)(_usbisr)); |
mbed_official | 27:4206883f4cb7 | 122 | LPC_USB->HcRhPortStatus1 = OR_RH_PORT_CSC; |
mbed_official | 27:4206883f4cb7 | 123 | LPC_USB->HcRhPortStatus1 = OR_RH_PORT_PRSC; |
mbed_official | 27:4206883f4cb7 | 124 | |
mbed_official | 27:4206883f4cb7 | 125 | NVIC_EnableIRQ(USB_IRQn); |
mbed_official | 27:4206883f4cb7 | 126 | |
mbed_official | 27:4206883f4cb7 | 127 | // Check for any connected devices |
mbed_official | 27:4206883f4cb7 | 128 | if (LPC_USB->HcRhPortStatus1 & OR_RH_PORT_CCS) { |
mbed_official | 27:4206883f4cb7 | 129 | //Device connected |
mbed_official | 27:4206883f4cb7 | 130 | wait_ms(150); |
mbed_official | 27:4206883f4cb7 | 131 | USB_DBG("Device connected (%08x)\n\r", LPC_USB->HcRhPortStatus1); |
mbed_official | 27:4206883f4cb7 | 132 | deviceConnected(0, 1, LPC_USB->HcRhPortStatus1 & OR_RH_PORT_LSDA); |
mbed_official | 27:4206883f4cb7 | 133 | } |
mbed_official | 27:4206883f4cb7 | 134 | } |
mbed_official | 27:4206883f4cb7 | 135 | |
mbed_official | 27:4206883f4cb7 | 136 | uint32_t USBHALHost::controlHeadED() { |
mbed_official | 27:4206883f4cb7 | 137 | return LPC_USB->HcControlHeadED; |
mbed_official | 27:4206883f4cb7 | 138 | } |
mbed_official | 27:4206883f4cb7 | 139 | |
mbed_official | 27:4206883f4cb7 | 140 | uint32_t USBHALHost::bulkHeadED() { |
mbed_official | 27:4206883f4cb7 | 141 | return LPC_USB->HcBulkHeadED; |
mbed_official | 27:4206883f4cb7 | 142 | } |
mbed_official | 27:4206883f4cb7 | 143 | |
mbed_official | 27:4206883f4cb7 | 144 | uint32_t USBHALHost::interruptHeadED() { |
mbed_official | 27:4206883f4cb7 | 145 | return usb_hcca->IntTable[0]; |
mbed_official | 27:4206883f4cb7 | 146 | } |
mbed_official | 27:4206883f4cb7 | 147 | |
mbed_official | 27:4206883f4cb7 | 148 | void USBHALHost::updateBulkHeadED(uint32_t addr) { |
mbed_official | 27:4206883f4cb7 | 149 | LPC_USB->HcBulkHeadED = addr; |
mbed_official | 27:4206883f4cb7 | 150 | } |
mbed_official | 27:4206883f4cb7 | 151 | |
mbed_official | 27:4206883f4cb7 | 152 | |
mbed_official | 27:4206883f4cb7 | 153 | void USBHALHost::updateControlHeadED(uint32_t addr) { |
mbed_official | 27:4206883f4cb7 | 154 | LPC_USB->HcControlHeadED = addr; |
mbed_official | 27:4206883f4cb7 | 155 | } |
mbed_official | 27:4206883f4cb7 | 156 | |
mbed_official | 27:4206883f4cb7 | 157 | void USBHALHost::updateInterruptHeadED(uint32_t addr) { |
mbed_official | 27:4206883f4cb7 | 158 | usb_hcca->IntTable[0] = addr; |
mbed_official | 27:4206883f4cb7 | 159 | } |
mbed_official | 27:4206883f4cb7 | 160 | |
mbed_official | 27:4206883f4cb7 | 161 | |
mbed_official | 27:4206883f4cb7 | 162 | void USBHALHost::enableList(ENDPOINT_TYPE type) { |
mbed_official | 27:4206883f4cb7 | 163 | switch(type) { |
mbed_official | 27:4206883f4cb7 | 164 | case CONTROL_ENDPOINT: |
mbed_official | 27:4206883f4cb7 | 165 | LPC_USB->HcCommandStatus = OR_CMD_STATUS_CLF; |
mbed_official | 27:4206883f4cb7 | 166 | LPC_USB->HcControl |= OR_CONTROL_CLE; |
mbed_official | 27:4206883f4cb7 | 167 | break; |
mbed_official | 27:4206883f4cb7 | 168 | case ISOCHRONOUS_ENDPOINT: |
mbed_official | 27:4206883f4cb7 | 169 | break; |
mbed_official | 27:4206883f4cb7 | 170 | case BULK_ENDPOINT: |
mbed_official | 27:4206883f4cb7 | 171 | LPC_USB->HcCommandStatus = OR_CMD_STATUS_BLF; |
mbed_official | 27:4206883f4cb7 | 172 | LPC_USB->HcControl |= OR_CONTROL_BLE; |
mbed_official | 27:4206883f4cb7 | 173 | break; |
mbed_official | 27:4206883f4cb7 | 174 | case INTERRUPT_ENDPOINT: |
mbed_official | 27:4206883f4cb7 | 175 | LPC_USB->HcControl |= OR_CONTROL_PLE; |
mbed_official | 27:4206883f4cb7 | 176 | break; |
mbed_official | 27:4206883f4cb7 | 177 | } |
mbed_official | 27:4206883f4cb7 | 178 | } |
mbed_official | 27:4206883f4cb7 | 179 | |
mbed_official | 27:4206883f4cb7 | 180 | |
mbed_official | 27:4206883f4cb7 | 181 | bool USBHALHost::disableList(ENDPOINT_TYPE type) { |
mbed_official | 27:4206883f4cb7 | 182 | switch(type) { |
mbed_official | 27:4206883f4cb7 | 183 | case CONTROL_ENDPOINT: |
mbed_official | 27:4206883f4cb7 | 184 | if(LPC_USB->HcControl & OR_CONTROL_CLE) { |
mbed_official | 27:4206883f4cb7 | 185 | LPC_USB->HcControl &= ~OR_CONTROL_CLE; |
mbed_official | 27:4206883f4cb7 | 186 | return true; |
mbed_official | 27:4206883f4cb7 | 187 | } |
mbed_official | 27:4206883f4cb7 | 188 | return false; |
mbed_official | 27:4206883f4cb7 | 189 | case ISOCHRONOUS_ENDPOINT: |
mbed_official | 27:4206883f4cb7 | 190 | return false; |
mbed_official | 27:4206883f4cb7 | 191 | case BULK_ENDPOINT: |
mbed_official | 27:4206883f4cb7 | 192 | if(LPC_USB->HcControl & OR_CONTROL_BLE){ |
mbed_official | 27:4206883f4cb7 | 193 | LPC_USB->HcControl &= ~OR_CONTROL_BLE; |
mbed_official | 27:4206883f4cb7 | 194 | return true; |
mbed_official | 27:4206883f4cb7 | 195 | } |
mbed_official | 27:4206883f4cb7 | 196 | return false; |
mbed_official | 27:4206883f4cb7 | 197 | case INTERRUPT_ENDPOINT: |
mbed_official | 27:4206883f4cb7 | 198 | if(LPC_USB->HcControl & OR_CONTROL_PLE) { |
mbed_official | 27:4206883f4cb7 | 199 | LPC_USB->HcControl &= ~OR_CONTROL_PLE; |
mbed_official | 27:4206883f4cb7 | 200 | return true; |
mbed_official | 27:4206883f4cb7 | 201 | } |
mbed_official | 27:4206883f4cb7 | 202 | return false; |
mbed_official | 27:4206883f4cb7 | 203 | } |
mbed_official | 27:4206883f4cb7 | 204 | return false; |
mbed_official | 27:4206883f4cb7 | 205 | } |
mbed_official | 27:4206883f4cb7 | 206 | |
mbed_official | 27:4206883f4cb7 | 207 | |
mbed_official | 27:4206883f4cb7 | 208 | void USBHALHost::memInit() { |
mbed_official | 27:4206883f4cb7 | 209 | usb_hcca = (volatile HCCA *)usb_buf; |
mbed_official | 27:4206883f4cb7 | 210 | usb_edBuf = usb_buf + HCCA_SIZE; |
mbed_official | 27:4206883f4cb7 | 211 | usb_tdBuf = usb_buf + HCCA_SIZE + (MAX_ENDPOINT*ED_SIZE); |
mbed_official | 27:4206883f4cb7 | 212 | } |
mbed_official | 27:4206883f4cb7 | 213 | |
mbed_official | 27:4206883f4cb7 | 214 | volatile uint8_t * USBHALHost::getED() { |
mbed_official | 27:4206883f4cb7 | 215 | for (int i = 0; i < MAX_ENDPOINT; i++) { |
mbed_official | 27:4206883f4cb7 | 216 | if ( !edBufAlloc[i] ) { |
mbed_official | 27:4206883f4cb7 | 217 | edBufAlloc[i] = true; |
mbed_official | 27:4206883f4cb7 | 218 | return (volatile uint8_t *)(usb_edBuf + i*ED_SIZE); |
mbed_official | 27:4206883f4cb7 | 219 | } |
mbed_official | 27:4206883f4cb7 | 220 | } |
mbed_official | 27:4206883f4cb7 | 221 | perror("Could not allocate ED\r\n"); |
mbed_official | 27:4206883f4cb7 | 222 | return NULL; //Could not alloc ED |
mbed_official | 27:4206883f4cb7 | 223 | } |
mbed_official | 27:4206883f4cb7 | 224 | |
mbed_official | 27:4206883f4cb7 | 225 | volatile uint8_t * USBHALHost::getTD() { |
mbed_official | 27:4206883f4cb7 | 226 | int i; |
mbed_official | 27:4206883f4cb7 | 227 | for (i = 0; i < MAX_TD; i++) { |
mbed_official | 27:4206883f4cb7 | 228 | if ( !tdBufAlloc[i] ) { |
mbed_official | 27:4206883f4cb7 | 229 | tdBufAlloc[i] = true; |
mbed_official | 27:4206883f4cb7 | 230 | return (volatile uint8_t *)(usb_tdBuf + i*TD_SIZE); |
mbed_official | 27:4206883f4cb7 | 231 | } |
mbed_official | 27:4206883f4cb7 | 232 | } |
mbed_official | 27:4206883f4cb7 | 233 | perror("Could not allocate TD\r\n"); |
mbed_official | 27:4206883f4cb7 | 234 | return NULL; //Could not alloc TD |
mbed_official | 27:4206883f4cb7 | 235 | } |
mbed_official | 27:4206883f4cb7 | 236 | |
mbed_official | 27:4206883f4cb7 | 237 | |
mbed_official | 27:4206883f4cb7 | 238 | void USBHALHost::freeED(volatile uint8_t * ed) { |
mbed_official | 27:4206883f4cb7 | 239 | int i; |
mbed_official | 27:4206883f4cb7 | 240 | i = (ed - usb_edBuf) / ED_SIZE; |
mbed_official | 27:4206883f4cb7 | 241 | edBufAlloc[i] = false; |
mbed_official | 27:4206883f4cb7 | 242 | } |
mbed_official | 27:4206883f4cb7 | 243 | |
mbed_official | 27:4206883f4cb7 | 244 | void USBHALHost::freeTD(volatile uint8_t * td) { |
mbed_official | 27:4206883f4cb7 | 245 | int i; |
mbed_official | 27:4206883f4cb7 | 246 | i = (td - usb_tdBuf) / TD_SIZE; |
mbed_official | 27:4206883f4cb7 | 247 | tdBufAlloc[i] = false; |
mbed_official | 27:4206883f4cb7 | 248 | } |
mbed_official | 27:4206883f4cb7 | 249 | |
mbed_official | 27:4206883f4cb7 | 250 | |
mbed_official | 27:4206883f4cb7 | 251 | void USBHALHost::resetRootHub() { |
mbed_official | 27:4206883f4cb7 | 252 | // Initiate port reset |
mbed_official | 27:4206883f4cb7 | 253 | LPC_USB->HcRhPortStatus1 = OR_RH_PORT_PRS; |
mbed_official | 27:4206883f4cb7 | 254 | |
mbed_official | 27:4206883f4cb7 | 255 | while (LPC_USB->HcRhPortStatus1 & OR_RH_PORT_PRS); |
mbed_official | 27:4206883f4cb7 | 256 | |
mbed_official | 27:4206883f4cb7 | 257 | // ...and clear port reset signal |
mbed_official | 27:4206883f4cb7 | 258 | LPC_USB->HcRhPortStatus1 = OR_RH_PORT_PRSC; |
mbed_official | 27:4206883f4cb7 | 259 | } |
mbed_official | 27:4206883f4cb7 | 260 | |
mbed_official | 27:4206883f4cb7 | 261 | |
mbed_official | 27:4206883f4cb7 | 262 | void USBHALHost::_usbisr(void) { |
mbed_official | 27:4206883f4cb7 | 263 | if (instHost) { |
mbed_official | 27:4206883f4cb7 | 264 | instHost->UsbIrqhandler(); |
mbed_official | 27:4206883f4cb7 | 265 | } |
mbed_official | 27:4206883f4cb7 | 266 | } |
mbed_official | 27:4206883f4cb7 | 267 | |
mbed_official | 27:4206883f4cb7 | 268 | void USBHALHost::UsbIrqhandler() { |
mbed_official | 27:4206883f4cb7 | 269 | if( LPC_USB->HcInterruptStatus & LPC_USB->HcInterruptEnable ) //Is there something to actually process? |
mbed_official | 27:4206883f4cb7 | 270 | { |
mbed_official | 27:4206883f4cb7 | 271 | |
mbed_official | 27:4206883f4cb7 | 272 | uint32_t int_status = LPC_USB->HcInterruptStatus & LPC_USB->HcInterruptEnable; |
mbed_official | 27:4206883f4cb7 | 273 | |
mbed_official | 27:4206883f4cb7 | 274 | // Root hub status change interrupt |
mbed_official | 27:4206883f4cb7 | 275 | if (int_status & OR_INTR_STATUS_RHSC) { |
mbed_official | 27:4206883f4cb7 | 276 | if (LPC_USB->HcRhPortStatus1 & OR_RH_PORT_CSC) { |
mbed_official | 27:4206883f4cb7 | 277 | if (LPC_USB->HcRhStatus & OR_RH_STATUS_DRWE) { |
mbed_official | 27:4206883f4cb7 | 278 | // When DRWE is on, Connect Status Change |
mbed_official | 27:4206883f4cb7 | 279 | // means a remote wakeup event. |
mbed_official | 27:4206883f4cb7 | 280 | } else { |
mbed_official | 27:4206883f4cb7 | 281 | |
mbed_official | 27:4206883f4cb7 | 282 | //Root device connected |
mbed_official | 27:4206883f4cb7 | 283 | if (LPC_USB->HcRhPortStatus1 & OR_RH_PORT_CCS) { |
mbed_official | 27:4206883f4cb7 | 284 | |
mbed_official | 27:4206883f4cb7 | 285 | // wait 150ms to avoid bounce |
mbed_official | 27:4206883f4cb7 | 286 | wait_ms(150); |
mbed_official | 27:4206883f4cb7 | 287 | |
mbed_official | 27:4206883f4cb7 | 288 | //Hub 0 (root hub), Port 1 (count starts at 1), Low or High speed |
mbed_official | 27:4206883f4cb7 | 289 | deviceConnected(0, 1, LPC_USB->HcRhPortStatus1 & OR_RH_PORT_LSDA); |
mbed_official | 27:4206883f4cb7 | 290 | } |
mbed_official | 27:4206883f4cb7 | 291 | |
mbed_official | 27:4206883f4cb7 | 292 | //Root device disconnected |
mbed_official | 27:4206883f4cb7 | 293 | else { |
mbed_official | 27:4206883f4cb7 | 294 | |
mbed_official | 27:4206883f4cb7 | 295 | if (!(int_status & OR_INTR_STATUS_WDH)) { |
mbed_official | 27:4206883f4cb7 | 296 | usb_hcca->DoneHead = 0; |
mbed_official | 27:4206883f4cb7 | 297 | } |
mbed_official | 27:4206883f4cb7 | 298 | |
mbed_official | 27:4206883f4cb7 | 299 | // wait 200ms to avoid bounce |
mbed_official | 27:4206883f4cb7 | 300 | wait_ms(200); |
mbed_official | 27:4206883f4cb7 | 301 | |
mbed_official | 27:4206883f4cb7 | 302 | deviceDisconnected(0, 1, NULL, usb_hcca->DoneHead & 0xFFFFFFFE); |
mbed_official | 27:4206883f4cb7 | 303 | |
mbed_official | 27:4206883f4cb7 | 304 | if (int_status & OR_INTR_STATUS_WDH) { |
mbed_official | 27:4206883f4cb7 | 305 | usb_hcca->DoneHead = 0; |
mbed_official | 27:4206883f4cb7 | 306 | LPC_USB->HcInterruptStatus = OR_INTR_STATUS_WDH; |
mbed_official | 27:4206883f4cb7 | 307 | } |
mbed_official | 27:4206883f4cb7 | 308 | } |
mbed_official | 27:4206883f4cb7 | 309 | } |
mbed_official | 27:4206883f4cb7 | 310 | LPC_USB->HcRhPortStatus1 = OR_RH_PORT_CSC; |
mbed_official | 27:4206883f4cb7 | 311 | } |
mbed_official | 27:4206883f4cb7 | 312 | if (LPC_USB->HcRhPortStatus1 & OR_RH_PORT_PRSC) { |
mbed_official | 27:4206883f4cb7 | 313 | LPC_USB->HcRhPortStatus1 = OR_RH_PORT_PRSC; |
mbed_official | 27:4206883f4cb7 | 314 | } |
mbed_official | 27:4206883f4cb7 | 315 | LPC_USB->HcInterruptStatus = OR_INTR_STATUS_RHSC; |
mbed_official | 27:4206883f4cb7 | 316 | } |
mbed_official | 27:4206883f4cb7 | 317 | |
mbed_official | 27:4206883f4cb7 | 318 | // Writeback Done Head interrupt |
mbed_official | 27:4206883f4cb7 | 319 | if (int_status & OR_INTR_STATUS_WDH) { |
mbed_official | 27:4206883f4cb7 | 320 | transferCompleted(usb_hcca->DoneHead & 0xFFFFFFFE); |
mbed_official | 27:4206883f4cb7 | 321 | LPC_USB->HcInterruptStatus = OR_INTR_STATUS_WDH; |
mbed_official | 27:4206883f4cb7 | 322 | } |
mbed_official | 27:4206883f4cb7 | 323 | } |
mbed_official | 27:4206883f4cb7 | 324 | } |
mbed_official | 27:4206883f4cb7 | 325 | #endif |