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Dependencies:   Matrix mbed

USBDevice/USBHAL_LPC11U.cpp@0:5e35c180ed4a, 2015-11-23 (annotated)

Committer:
Racer01014
Date:
Mon Nov 23 16:09:54 2015 +0000
Revision:
0:5e35c180ed4a
-

Who changed what in which revision?

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Racer01014 0:5e35c180ed4a 1 /* Copyright (c) 2010-2011 mbed.org, MIT License
Racer01014 0:5e35c180ed4a 2 *
Racer01014 0:5e35c180ed4a 3 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
Racer01014 0:5e35c180ed4a 4 * and associated documentation files (the "Software"), to deal in the Software without
Racer01014 0:5e35c180ed4a 5 * restriction, including without limitation the rights to use, copy, modify, merge, publish,
Racer01014 0:5e35c180ed4a 6 * distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
Racer01014 0:5e35c180ed4a 7 * Software is furnished to do so, subject to the following conditions:
Racer01014 0:5e35c180ed4a 8 *
Racer01014 0:5e35c180ed4a 9 * The above copyright notice and this permission notice shall be included in all copies or
Racer01014 0:5e35c180ed4a 10 * substantial portions of the Software.
Racer01014 0:5e35c180ed4a 11 *
Racer01014 0:5e35c180ed4a 12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
Racer01014 0:5e35c180ed4a 13 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
Racer01014 0:5e35c180ed4a 14 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
Racer01014 0:5e35c180ed4a 15 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
Racer01014 0:5e35c180ed4a 16 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Racer01014 0:5e35c180ed4a 17 */
Racer01014 0:5e35c180ed4a 18
Racer01014 0:5e35c180ed4a 19 #ifdef TARGET_LPC11U24
Racer01014 0:5e35c180ed4a 20
Racer01014 0:5e35c180ed4a 21 #include "USBHAL.h"
Racer01014 0:5e35c180ed4a 22
Racer01014 0:5e35c180ed4a 23 USBHAL * USBHAL::instance;
Racer01014 0:5e35c180ed4a 24
Racer01014 0:5e35c180ed4a 25 // Valid physical endpoint numbers are 0 to (NUMBER_OF_PHYSICAL_ENDPOINTS-1)
Racer01014 0:5e35c180ed4a 26 #define LAST_PHYSICAL_ENDPOINT (NUMBER_OF_PHYSICAL_ENDPOINTS-1)
Racer01014 0:5e35c180ed4a 27
Racer01014 0:5e35c180ed4a 28 // Convert physical endpoint number to register bit
Racer01014 0:5e35c180ed4a 29 #define EP(endpoint) (1UL<<endpoint)
Racer01014 0:5e35c180ed4a 30
Racer01014 0:5e35c180ed4a 31 // Convert physical to logical
Racer01014 0:5e35c180ed4a 32 #define PHY_TO_LOG(endpoint) ((endpoint)>>1)
Racer01014 0:5e35c180ed4a 33
Racer01014 0:5e35c180ed4a 34 // Get endpoint direction
Racer01014 0:5e35c180ed4a 35 #define IN_EP(endpoint) ((endpoint) & 1U ? true : false)
Racer01014 0:5e35c180ed4a 36 #define OUT_EP(endpoint) ((endpoint) & 1U ? false : true)
Racer01014 0:5e35c180ed4a 37
Racer01014 0:5e35c180ed4a 38 // USB RAM
Racer01014 0:5e35c180ed4a 39 #define USB_RAM_START (0x20004000)
Racer01014 0:5e35c180ed4a 40 #define USB_RAM_SIZE (0x00000800)
Racer01014 0:5e35c180ed4a 41
Racer01014 0:5e35c180ed4a 42 // SYSAHBCLKCTRL
Racer01014 0:5e35c180ed4a 43 #define CLK_USB (1UL<<14)
Racer01014 0:5e35c180ed4a 44 #define CLK_USBRAM (1UL<<27)
Racer01014 0:5e35c180ed4a 45
Racer01014 0:5e35c180ed4a 46 // USB Information register
Racer01014 0:5e35c180ed4a 47 #define FRAME_NR(a) ((a) & 0x7ff) // Frame number
Racer01014 0:5e35c180ed4a 48
Racer01014 0:5e35c180ed4a 49 // USB Device Command/Status register
Racer01014 0:5e35c180ed4a 50 #define DEV_ADDR_MASK (0x7f) // Device address
Racer01014 0:5e35c180ed4a 51 #define DEV_ADDR(a) ((a) & DEV_ADDR_MASK)
Racer01014 0:5e35c180ed4a 52 #define DEV_EN (1UL<<7) // Device enable
Racer01014 0:5e35c180ed4a 53 #define SETUP (1UL<<8) // SETUP token received
Racer01014 0:5e35c180ed4a 54 #define PLL_ON (1UL<<9) // PLL enabled in suspend
Racer01014 0:5e35c180ed4a 55 #define DCON (1UL<<16) // Device status - connect
Racer01014 0:5e35c180ed4a 56 #define DSUS (1UL<<17) // Device status - suspend
Racer01014 0:5e35c180ed4a 57 #define DCON_C (1UL<<24) // Connect change
Racer01014 0:5e35c180ed4a 58 #define DSUS_C (1UL<<25) // Suspend change
Racer01014 0:5e35c180ed4a 59 #define DRES_C (1UL<<26) // Reset change
Racer01014 0:5e35c180ed4a 60 #define VBUSDEBOUNCED (1UL<<28) // Vbus detected
Racer01014 0:5e35c180ed4a 61
Racer01014 0:5e35c180ed4a 62 // Endpoint Command/Status list
Racer01014 0:5e35c180ed4a 63 #define CMDSTS_A (1UL<<31) // Active
Racer01014 0:5e35c180ed4a 64 #define CMDSTS_D (1UL<<30) // Disable
Racer01014 0:5e35c180ed4a 65 #define CMDSTS_S (1UL<<29) // Stall
Racer01014 0:5e35c180ed4a 66 #define CMDSTS_TR (1UL<<28) // Toggle Reset
Racer01014 0:5e35c180ed4a 67 #define CMDSTS_RF (1UL<<27) // Rate Feedback mode
Racer01014 0:5e35c180ed4a 68 #define CMDSTS_TV (1UL<<27) // Toggle Value
Racer01014 0:5e35c180ed4a 69 #define CMDSTS_T (1UL<<26) // Endpoint Type
Racer01014 0:5e35c180ed4a 70 #define CMDSTS_NBYTES(n) (((n)&0x3ff)<<16) // Number of bytes
Racer01014 0:5e35c180ed4a 71 #define CMDSTS_ADDRESS_OFFSET(a) (((a)>>6)&0xffff) // Buffer start address
Racer01014 0:5e35c180ed4a 72
Racer01014 0:5e35c180ed4a 73 #define BYTES_REMAINING(s) (((s)>>16)&0x3ff) // Bytes remaining after transfer
Racer01014 0:5e35c180ed4a 74
Racer01014 0:5e35c180ed4a 75 // USB Non-endpoint interrupt sources
Racer01014 0:5e35c180ed4a 76 #define FRAME_INT (1UL<<30)
Racer01014 0:5e35c180ed4a 77 #define DEV_INT (1UL<<31)
Racer01014 0:5e35c180ed4a 78
Racer01014 0:5e35c180ed4a 79 static volatile int epComplete = 0;
Racer01014 0:5e35c180ed4a 80
Racer01014 0:5e35c180ed4a 81 // One entry for a double-buffered logical endpoint in the endpoint
Racer01014 0:5e35c180ed4a 82 // command/status list. Endpoint 0 is single buffered, out[1] is used
Racer01014 0:5e35c180ed4a 83 // for the SETUP packet and in[1] is not used
Racer01014 0:5e35c180ed4a 84 typedef __packed struct {
Racer01014 0:5e35c180ed4a 85 uint32_t out[2];
Racer01014 0:5e35c180ed4a 86 uint32_t in[2];
Racer01014 0:5e35c180ed4a 87 } EP_COMMAND_STATUS;
Racer01014 0:5e35c180ed4a 88
Racer01014 0:5e35c180ed4a 89 typedef __packed struct {
Racer01014 0:5e35c180ed4a 90 uint8_t out[MAX_PACKET_SIZE_EP0];
Racer01014 0:5e35c180ed4a 91 uint8_t in[MAX_PACKET_SIZE_EP0];
Racer01014 0:5e35c180ed4a 92 uint8_t setup[SETUP_PACKET_SIZE];
Racer01014 0:5e35c180ed4a 93 } CONTROL_TRANSFER;
Racer01014 0:5e35c180ed4a 94
Racer01014 0:5e35c180ed4a 95 typedef __packed struct {
Racer01014 0:5e35c180ed4a 96 uint32_t maxPacket;
Racer01014 0:5e35c180ed4a 97 uint32_t buffer[2];
Racer01014 0:5e35c180ed4a 98 uint32_t options;
Racer01014 0:5e35c180ed4a 99 } EP_STATE;
Racer01014 0:5e35c180ed4a 100
Racer01014 0:5e35c180ed4a 101 static volatile EP_STATE endpointState[NUMBER_OF_PHYSICAL_ENDPOINTS];
Racer01014 0:5e35c180ed4a 102
Racer01014 0:5e35c180ed4a 103 // Pointer to the endpoint command/status list
Racer01014 0:5e35c180ed4a 104 static EP_COMMAND_STATUS *ep = NULL;
Racer01014 0:5e35c180ed4a 105
Racer01014 0:5e35c180ed4a 106 // Pointer to endpoint 0 data (IN/OUT and SETUP)
Racer01014 0:5e35c180ed4a 107 static CONTROL_TRANSFER *ct = NULL;
Racer01014 0:5e35c180ed4a 108
Racer01014 0:5e35c180ed4a 109 // Shadow DEVCMDSTAT register to avoid accidentally clearing flags or
Racer01014 0:5e35c180ed4a 110 // initiating a remote wakeup event.
Racer01014 0:5e35c180ed4a 111 static volatile uint32_t devCmdStat;
Racer01014 0:5e35c180ed4a 112
Racer01014 0:5e35c180ed4a 113 // Pointers used to allocate USB RAM
Racer01014 0:5e35c180ed4a 114 static uint32_t usbRamPtr = USB_RAM_START;
Racer01014 0:5e35c180ed4a 115 static uint32_t epRamPtr = 0; // Buffers for endpoints > 0 start here
Racer01014 0:5e35c180ed4a 116
Racer01014 0:5e35c180ed4a 117 #define ROUND_UP_TO_MULTIPLE(x, m) ((((x)+((m)-1))/(m))*(m))
Racer01014 0:5e35c180ed4a 118
Racer01014 0:5e35c180ed4a 119 void USBMemCopy(uint8_t *dst, uint8_t *src, uint32_t size);
Racer01014 0:5e35c180ed4a 120 void USBMemCopy(uint8_t *dst, uint8_t *src, uint32_t size) {
Racer01014 0:5e35c180ed4a 121 if (size > 0) {
Racer01014 0:5e35c180ed4a 122 do {
Racer01014 0:5e35c180ed4a 123 *dst++ = *src++;
Racer01014 0:5e35c180ed4a 124 } while (--size > 0);
Racer01014 0:5e35c180ed4a 125 }
Racer01014 0:5e35c180ed4a 126 }
Racer01014 0:5e35c180ed4a 127
Racer01014 0:5e35c180ed4a 128
Racer01014 0:5e35c180ed4a 129 USBHAL::USBHAL(void) {
Racer01014 0:5e35c180ed4a 130 NVIC_DisableIRQ(USB_IRQn);
Racer01014 0:5e35c180ed4a 131
Racer01014 0:5e35c180ed4a 132 // fill in callback array
Racer01014 0:5e35c180ed4a 133 epCallback[0] = &USBHAL::EP1_OUT_callback;
Racer01014 0:5e35c180ed4a 134 epCallback[1] = &USBHAL::EP1_IN_callback;
Racer01014 0:5e35c180ed4a 135 epCallback[2] = &USBHAL::EP2_OUT_callback;
Racer01014 0:5e35c180ed4a 136 epCallback[3] = &USBHAL::EP2_IN_callback;
Racer01014 0:5e35c180ed4a 137 epCallback[4] = &USBHAL::EP3_OUT_callback;
Racer01014 0:5e35c180ed4a 138 epCallback[5] = &USBHAL::EP3_IN_callback;
Racer01014 0:5e35c180ed4a 139 epCallback[6] = &USBHAL::EP4_OUT_callback;
Racer01014 0:5e35c180ed4a 140 epCallback[7] = &USBHAL::EP4_IN_callback;
Racer01014 0:5e35c180ed4a 141
Racer01014 0:5e35c180ed4a 142 // nUSB_CONNECT output
Racer01014 0:5e35c180ed4a 143 LPC_IOCON->PIO0_6 = 0x00000001;
Racer01014 0:5e35c180ed4a 144
Racer01014 0:5e35c180ed4a 145 // Enable clocks (USB registers, USB RAM)
Racer01014 0:5e35c180ed4a 146 LPC_SYSCON->SYSAHBCLKCTRL |= CLK_USB | CLK_USBRAM;
Racer01014 0:5e35c180ed4a 147
Racer01014 0:5e35c180ed4a 148 // Ensure device disconnected (DCON not set)
Racer01014 0:5e35c180ed4a 149 LPC_USB->DEVCMDSTAT = 0;
Racer01014 0:5e35c180ed4a 150
Racer01014 0:5e35c180ed4a 151 // to ensure that the USB host sees the device as
Racer01014 0:5e35c180ed4a 152 // disconnected if the target CPU is reset.
Racer01014 0:5e35c180ed4a 153 wait(0.3);
Racer01014 0:5e35c180ed4a 154
Racer01014 0:5e35c180ed4a 155 // Reserve space in USB RAM for endpoint command/status list
Racer01014 0:5e35c180ed4a 156 // Must be 256 byte aligned
Racer01014 0:5e35c180ed4a 157 usbRamPtr = ROUND_UP_TO_MULTIPLE(usbRamPtr, 256);
Racer01014 0:5e35c180ed4a 158 ep = (EP_COMMAND_STATUS *)usbRamPtr;
Racer01014 0:5e35c180ed4a 159 usbRamPtr += (sizeof(EP_COMMAND_STATUS) * NUMBER_OF_LOGICAL_ENDPOINTS);
Racer01014 0:5e35c180ed4a 160 LPC_USB->EPLISTSTART = (uint32_t)(ep) & 0xffffff00;
Racer01014 0:5e35c180ed4a 161
Racer01014 0:5e35c180ed4a 162 // Reserve space in USB RAM for Endpoint 0
Racer01014 0:5e35c180ed4a 163 // Must be 64 byte aligned
Racer01014 0:5e35c180ed4a 164 usbRamPtr = ROUND_UP_TO_MULTIPLE(usbRamPtr, 64);
Racer01014 0:5e35c180ed4a 165 ct = (CONTROL_TRANSFER *)usbRamPtr;
Racer01014 0:5e35c180ed4a 166 usbRamPtr += sizeof(CONTROL_TRANSFER);
Racer01014 0:5e35c180ed4a 167 LPC_USB->DATABUFSTART =(uint32_t)(ct) & 0xffc00000;
Racer01014 0:5e35c180ed4a 168
Racer01014 0:5e35c180ed4a 169 // Setup command/status list for EP0
Racer01014 0:5e35c180ed4a 170 ep[0].out[0] = 0;
Racer01014 0:5e35c180ed4a 171 ep[0].in[0] = 0;
Racer01014 0:5e35c180ed4a 172 ep[0].out[1] = CMDSTS_ADDRESS_OFFSET((uint32_t)ct->setup);
Racer01014 0:5e35c180ed4a 173
Racer01014 0:5e35c180ed4a 174 // Route all interrupts to IRQ, some can be routed to
Racer01014 0:5e35c180ed4a 175 // USB_FIQ if you wish.
Racer01014 0:5e35c180ed4a 176 LPC_USB->INTROUTING = 0;
Racer01014 0:5e35c180ed4a 177
Racer01014 0:5e35c180ed4a 178 // Set device address 0, enable USB device, no remote wakeup
Racer01014 0:5e35c180ed4a 179 devCmdStat = DEV_ADDR(0) | DEV_EN | DSUS;
Racer01014 0:5e35c180ed4a 180 LPC_USB->DEVCMDSTAT = devCmdStat;
Racer01014 0:5e35c180ed4a 181
Racer01014 0:5e35c180ed4a 182 // Enable interrupts for device events and EP0
Racer01014 0:5e35c180ed4a 183 LPC_USB->INTEN = DEV_INT | EP(EP0IN) | EP(EP0OUT) | FRAME_INT;
Racer01014 0:5e35c180ed4a 184 instance = this;
Racer01014 0:5e35c180ed4a 185
Racer01014 0:5e35c180ed4a 186 //attach IRQ handler and enable interrupts
Racer01014 0:5e35c180ed4a 187 NVIC_SetVector(USB_IRQn, (uint32_t)&_usbisr);
Racer01014 0:5e35c180ed4a 188 }
Racer01014 0:5e35c180ed4a 189
Racer01014 0:5e35c180ed4a 190 USBHAL::~USBHAL(void) {
Racer01014 0:5e35c180ed4a 191 // Ensure device disconnected (DCON not set)
Racer01014 0:5e35c180ed4a 192 LPC_USB->DEVCMDSTAT = 0;
Racer01014 0:5e35c180ed4a 193 // Disable USB interrupts
Racer01014 0:5e35c180ed4a 194 NVIC_DisableIRQ(USB_IRQn);
Racer01014 0:5e35c180ed4a 195 }
Racer01014 0:5e35c180ed4a 196
Racer01014 0:5e35c180ed4a 197 void USBHAL::connect(void) {
Racer01014 0:5e35c180ed4a 198 NVIC_EnableIRQ(USB_IRQn);
Racer01014 0:5e35c180ed4a 199 devCmdStat |= DCON;
Racer01014 0:5e35c180ed4a 200 LPC_USB->DEVCMDSTAT = devCmdStat;
Racer01014 0:5e35c180ed4a 201 }
Racer01014 0:5e35c180ed4a 202
Racer01014 0:5e35c180ed4a 203 void USBHAL::disconnect(void) {
Racer01014 0:5e35c180ed4a 204 NVIC_DisableIRQ(USB_IRQn);
Racer01014 0:5e35c180ed4a 205 devCmdStat &= ~DCON;
Racer01014 0:5e35c180ed4a 206 LPC_USB->DEVCMDSTAT = devCmdStat;
Racer01014 0:5e35c180ed4a 207 }
Racer01014 0:5e35c180ed4a 208
Racer01014 0:5e35c180ed4a 209 void USBHAL::configureDevice(void) {
Racer01014 0:5e35c180ed4a 210 // Not required
Racer01014 0:5e35c180ed4a 211 }
Racer01014 0:5e35c180ed4a 212
Racer01014 0:5e35c180ed4a 213 void USBHAL::unconfigureDevice(void) {
Racer01014 0:5e35c180ed4a 214 // Not required
Racer01014 0:5e35c180ed4a 215 }
Racer01014 0:5e35c180ed4a 216
Racer01014 0:5e35c180ed4a 217 void USBHAL::EP0setup(uint8_t *buffer) {
Racer01014 0:5e35c180ed4a 218 // Copy setup packet data
Racer01014 0:5e35c180ed4a 219 USBMemCopy(buffer, ct->setup, SETUP_PACKET_SIZE);
Racer01014 0:5e35c180ed4a 220 }
Racer01014 0:5e35c180ed4a 221
Racer01014 0:5e35c180ed4a 222 void USBHAL::EP0read(void) {
Racer01014 0:5e35c180ed4a 223 // Start an endpoint 0 read
Racer01014 0:5e35c180ed4a 224
Racer01014 0:5e35c180ed4a 225 // The USB ISR will call USBDevice_EP0out() when a packet has been read,
Racer01014 0:5e35c180ed4a 226 // the USBDevice layer then calls USBBusInterface_EP0getReadResult() to
Racer01014 0:5e35c180ed4a 227 // read the data.
Racer01014 0:5e35c180ed4a 228
Racer01014 0:5e35c180ed4a 229 ep[0].out[0] = CMDSTS_A |CMDSTS_NBYTES(MAX_PACKET_SIZE_EP0) \
Racer01014 0:5e35c180ed4a 230 | CMDSTS_ADDRESS_OFFSET((uint32_t)ct->out);
Racer01014 0:5e35c180ed4a 231 }
Racer01014 0:5e35c180ed4a 232
Racer01014 0:5e35c180ed4a 233 uint32_t USBHAL::EP0getReadResult(uint8_t *buffer) {
Racer01014 0:5e35c180ed4a 234 // Complete an endpoint 0 read
Racer01014 0:5e35c180ed4a 235 uint32_t bytesRead;
Racer01014 0:5e35c180ed4a 236
Racer01014 0:5e35c180ed4a 237 // Find how many bytes were read
Racer01014 0:5e35c180ed4a 238 bytesRead = MAX_PACKET_SIZE_EP0 - BYTES_REMAINING(ep[0].out[0]);
Racer01014 0:5e35c180ed4a 239
Racer01014 0:5e35c180ed4a 240 // Copy data
Racer01014 0:5e35c180ed4a 241 USBMemCopy(buffer, ct->out, bytesRead);
Racer01014 0:5e35c180ed4a 242 return bytesRead;
Racer01014 0:5e35c180ed4a 243 }
Racer01014 0:5e35c180ed4a 244
Racer01014 0:5e35c180ed4a 245
Racer01014 0:5e35c180ed4a 246 void USBHAL::EP0readStage(void) {
Racer01014 0:5e35c180ed4a 247 // Not required
Racer01014 0:5e35c180ed4a 248 }
Racer01014 0:5e35c180ed4a 249
Racer01014 0:5e35c180ed4a 250 void USBHAL::EP0write(uint8_t *buffer, uint32_t size) {
Racer01014 0:5e35c180ed4a 251 // Start and endpoint 0 write
Racer01014 0:5e35c180ed4a 252
Racer01014 0:5e35c180ed4a 253 // The USB ISR will call USBDevice_EP0in() when the data has
Racer01014 0:5e35c180ed4a 254 // been written, the USBDevice layer then calls
Racer01014 0:5e35c180ed4a 255 // USBBusInterface_EP0getWriteResult() to complete the transaction.
Racer01014 0:5e35c180ed4a 256
Racer01014 0:5e35c180ed4a 257 // Copy data
Racer01014 0:5e35c180ed4a 258 USBMemCopy(ct->in, buffer, size);
Racer01014 0:5e35c180ed4a 259
Racer01014 0:5e35c180ed4a 260 // Start transfer
Racer01014 0:5e35c180ed4a 261 ep[0].in[0] = CMDSTS_A | CMDSTS_NBYTES(size) \
Racer01014 0:5e35c180ed4a 262 | CMDSTS_ADDRESS_OFFSET((uint32_t)ct->in);
Racer01014 0:5e35c180ed4a 263 }
Racer01014 0:5e35c180ed4a 264
Racer01014 0:5e35c180ed4a 265
Racer01014 0:5e35c180ed4a 266 EP_STATUS USBHAL::endpointRead(uint8_t endpoint, uint32_t maximumSize) {
Racer01014 0:5e35c180ed4a 267 uint8_t bf = 0;
Racer01014 0:5e35c180ed4a 268 uint32_t flags = 0;
Racer01014 0:5e35c180ed4a 269
Racer01014 0:5e35c180ed4a 270 //check which buffer must be filled
Racer01014 0:5e35c180ed4a 271 if (LPC_USB->EPBUFCFG & EP(endpoint)) {
Racer01014 0:5e35c180ed4a 272 // Double buffered
Racer01014 0:5e35c180ed4a 273 if (LPC_USB->EPINUSE & EP(endpoint)) {
Racer01014 0:5e35c180ed4a 274 bf = 1;
Racer01014 0:5e35c180ed4a 275 } else {
Racer01014 0:5e35c180ed4a 276 bf = 0;
Racer01014 0:5e35c180ed4a 277 }
Racer01014 0:5e35c180ed4a 278 }
Racer01014 0:5e35c180ed4a 279
Racer01014 0:5e35c180ed4a 280 // if isochronous endpoint, T = 1
Racer01014 0:5e35c180ed4a 281 if(endpointState[endpoint].options & ISOCHRONOUS)
Racer01014 0:5e35c180ed4a 282 {
Racer01014 0:5e35c180ed4a 283 flags |= CMDSTS_T;
Racer01014 0:5e35c180ed4a 284 }
Racer01014 0:5e35c180ed4a 285
Racer01014 0:5e35c180ed4a 286 //Active the endpoint for reading
Racer01014 0:5e35c180ed4a 287 ep[PHY_TO_LOG(endpoint)].out[bf] = CMDSTS_A | CMDSTS_NBYTES(maximumSize) \
Racer01014 0:5e35c180ed4a 288 | CMDSTS_ADDRESS_OFFSET((uint32_t)ct->out) | flags;
Racer01014 0:5e35c180ed4a 289 return EP_PENDING;
Racer01014 0:5e35c180ed4a 290 }
Racer01014 0:5e35c180ed4a 291
Racer01014 0:5e35c180ed4a 292 EP_STATUS USBHAL::endpointReadResult(uint8_t endpoint, uint8_t *data, uint32_t *bytesRead) {
Racer01014 0:5e35c180ed4a 293
Racer01014 0:5e35c180ed4a 294 uint8_t bf = 0;
Racer01014 0:5e35c180ed4a 295
Racer01014 0:5e35c180ed4a 296 if (!(epComplete & EP(endpoint)))
Racer01014 0:5e35c180ed4a 297 return EP_PENDING;
Racer01014 0:5e35c180ed4a 298 else {
Racer01014 0:5e35c180ed4a 299 epComplete &= ~EP(endpoint);
Racer01014 0:5e35c180ed4a 300
Racer01014 0:5e35c180ed4a 301 //check which buffer has been filled
Racer01014 0:5e35c180ed4a 302 if (LPC_USB->EPBUFCFG & EP(endpoint)) {
Racer01014 0:5e35c180ed4a 303 // Double buffered (here we read the previous buffer which was used)
Racer01014 0:5e35c180ed4a 304 if (LPC_USB->EPINUSE & EP(endpoint)) {
Racer01014 0:5e35c180ed4a 305 bf = 0;
Racer01014 0:5e35c180ed4a 306 } else {
Racer01014 0:5e35c180ed4a 307 bf = 1;
Racer01014 0:5e35c180ed4a 308 }
Racer01014 0:5e35c180ed4a 309 }
Racer01014 0:5e35c180ed4a 310
Racer01014 0:5e35c180ed4a 311 // Find how many bytes were read
Racer01014 0:5e35c180ed4a 312 *bytesRead = (uint32_t) (endpointState[endpoint].maxPacket - BYTES_REMAINING(ep[PHY_TO_LOG(endpoint)].out[bf]));
Racer01014 0:5e35c180ed4a 313
Racer01014 0:5e35c180ed4a 314 // Copy data
Racer01014 0:5e35c180ed4a 315 USBMemCopy(data, ct->out, *bytesRead);
Racer01014 0:5e35c180ed4a 316 return EP_COMPLETED;
Racer01014 0:5e35c180ed4a 317 }
Racer01014 0:5e35c180ed4a 318 }
Racer01014 0:5e35c180ed4a 319
Racer01014 0:5e35c180ed4a 320 void USBHAL::EP0getWriteResult(void) {
Racer01014 0:5e35c180ed4a 321 // Not required
Racer01014 0:5e35c180ed4a 322 }
Racer01014 0:5e35c180ed4a 323
Racer01014 0:5e35c180ed4a 324 void USBHAL::EP0stall(void) {
Racer01014 0:5e35c180ed4a 325 ep[0].in[0] = CMDSTS_S;
Racer01014 0:5e35c180ed4a 326 ep[0].out[0] = CMDSTS_S;
Racer01014 0:5e35c180ed4a 327 }
Racer01014 0:5e35c180ed4a 328
Racer01014 0:5e35c180ed4a 329 void USBHAL::setAddress(uint8_t address) {
Racer01014 0:5e35c180ed4a 330 devCmdStat &= ~DEV_ADDR_MASK;
Racer01014 0:5e35c180ed4a 331 devCmdStat |= DEV_ADDR(address);
Racer01014 0:5e35c180ed4a 332 LPC_USB->DEVCMDSTAT = devCmdStat;
Racer01014 0:5e35c180ed4a 333 }
Racer01014 0:5e35c180ed4a 334
Racer01014 0:5e35c180ed4a 335 EP_STATUS USBHAL::endpointWrite(uint8_t endpoint, uint8_t *data, uint32_t size) {
Racer01014 0:5e35c180ed4a 336 uint32_t flags = 0;
Racer01014 0:5e35c180ed4a 337 uint32_t bf;
Racer01014 0:5e35c180ed4a 338
Racer01014 0:5e35c180ed4a 339 // Validate parameters
Racer01014 0:5e35c180ed4a 340 if (data == NULL) {
Racer01014 0:5e35c180ed4a 341 return EP_INVALID;
Racer01014 0:5e35c180ed4a 342 }
Racer01014 0:5e35c180ed4a 343
Racer01014 0:5e35c180ed4a 344 if (endpoint > LAST_PHYSICAL_ENDPOINT) {
Racer01014 0:5e35c180ed4a 345 return EP_INVALID;
Racer01014 0:5e35c180ed4a 346 }
Racer01014 0:5e35c180ed4a 347
Racer01014 0:5e35c180ed4a 348 if ((endpoint==EP0IN) || (endpoint==EP0OUT)) {
Racer01014 0:5e35c180ed4a 349 return EP_INVALID;
Racer01014 0:5e35c180ed4a 350 }
Racer01014 0:5e35c180ed4a 351
Racer01014 0:5e35c180ed4a 352 if (size > endpointState[endpoint].maxPacket) {
Racer01014 0:5e35c180ed4a 353 return EP_INVALID;
Racer01014 0:5e35c180ed4a 354 }
Racer01014 0:5e35c180ed4a 355
Racer01014 0:5e35c180ed4a 356 if (LPC_USB->EPBUFCFG & EP(endpoint)) {
Racer01014 0:5e35c180ed4a 357 // Double buffered
Racer01014 0:5e35c180ed4a 358 if (LPC_USB->EPINUSE & EP(endpoint)) {
Racer01014 0:5e35c180ed4a 359 bf = 1;
Racer01014 0:5e35c180ed4a 360 } else {
Racer01014 0:5e35c180ed4a 361 bf = 0;
Racer01014 0:5e35c180ed4a 362 }
Racer01014 0:5e35c180ed4a 363 } else {
Racer01014 0:5e35c180ed4a 364 // Single buffered
Racer01014 0:5e35c180ed4a 365 bf = 0;
Racer01014 0:5e35c180ed4a 366 }
Racer01014 0:5e35c180ed4a 367
Racer01014 0:5e35c180ed4a 368 // Check if already active
Racer01014 0:5e35c180ed4a 369 if (ep[PHY_TO_LOG(endpoint)].in[bf] & CMDSTS_A) {
Racer01014 0:5e35c180ed4a 370 return EP_INVALID;
Racer01014 0:5e35c180ed4a 371 }
Racer01014 0:5e35c180ed4a 372
Racer01014 0:5e35c180ed4a 373 // Check if stalled
Racer01014 0:5e35c180ed4a 374 if (ep[PHY_TO_LOG(endpoint)].in[bf] & CMDSTS_S) {
Racer01014 0:5e35c180ed4a 375 return EP_STALLED;
Racer01014 0:5e35c180ed4a 376 }
Racer01014 0:5e35c180ed4a 377
Racer01014 0:5e35c180ed4a 378 // Copy data to USB RAM
Racer01014 0:5e35c180ed4a 379 USBMemCopy((uint8_t *)endpointState[endpoint].buffer[bf], data, size);
Racer01014 0:5e35c180ed4a 380
Racer01014 0:5e35c180ed4a 381 // Add options
Racer01014 0:5e35c180ed4a 382 if (endpointState[endpoint].options & RATE_FEEDBACK_MODE) {
Racer01014 0:5e35c180ed4a 383 flags |= CMDSTS_RF;
Racer01014 0:5e35c180ed4a 384 }
Racer01014 0:5e35c180ed4a 385
Racer01014 0:5e35c180ed4a 386 if (endpointState[endpoint].options & ISOCHRONOUS) {
Racer01014 0:5e35c180ed4a 387 flags |= CMDSTS_T;
Racer01014 0:5e35c180ed4a 388 }
Racer01014 0:5e35c180ed4a 389
Racer01014 0:5e35c180ed4a 390 // Add transfer
Racer01014 0:5e35c180ed4a 391 ep[PHY_TO_LOG(endpoint)].in[bf] = CMDSTS_ADDRESS_OFFSET( \
Racer01014 0:5e35c180ed4a 392 endpointState[endpoint].buffer[bf]) \
Racer01014 0:5e35c180ed4a 393 | CMDSTS_NBYTES(size) | CMDSTS_A | flags;
Racer01014 0:5e35c180ed4a 394
Racer01014 0:5e35c180ed4a 395 return EP_PENDING;
Racer01014 0:5e35c180ed4a 396 }
Racer01014 0:5e35c180ed4a 397
Racer01014 0:5e35c180ed4a 398 EP_STATUS USBHAL::endpointWriteResult(uint8_t endpoint) {
Racer01014 0:5e35c180ed4a 399 uint32_t bf;
Racer01014 0:5e35c180ed4a 400
Racer01014 0:5e35c180ed4a 401 // Validate parameters
Racer01014 0:5e35c180ed4a 402 if (endpoint > LAST_PHYSICAL_ENDPOINT) {
Racer01014 0:5e35c180ed4a 403 return EP_INVALID;
Racer01014 0:5e35c180ed4a 404 }
Racer01014 0:5e35c180ed4a 405
Racer01014 0:5e35c180ed4a 406 if (OUT_EP(endpoint)) {
Racer01014 0:5e35c180ed4a 407 return EP_INVALID;
Racer01014 0:5e35c180ed4a 408 }
Racer01014 0:5e35c180ed4a 409
Racer01014 0:5e35c180ed4a 410 if (LPC_USB->EPBUFCFG & EP(endpoint)) {
Racer01014 0:5e35c180ed4a 411 // Double buffered // TODO: FIX THIS
Racer01014 0:5e35c180ed4a 412 if (LPC_USB->EPINUSE & EP(endpoint)) {
Racer01014 0:5e35c180ed4a 413 bf = 1;
Racer01014 0:5e35c180ed4a 414 } else {
Racer01014 0:5e35c180ed4a 415 bf = 0;
Racer01014 0:5e35c180ed4a 416 }
Racer01014 0:5e35c180ed4a 417 } else {
Racer01014 0:5e35c180ed4a 418 // Single buffered
Racer01014 0:5e35c180ed4a 419 bf = 0;
Racer01014 0:5e35c180ed4a 420 }
Racer01014 0:5e35c180ed4a 421
Racer01014 0:5e35c180ed4a 422 // Check if endpoint still active
Racer01014 0:5e35c180ed4a 423 if (ep[PHY_TO_LOG(endpoint)].in[bf] & CMDSTS_A) {
Racer01014 0:5e35c180ed4a 424 return EP_PENDING;
Racer01014 0:5e35c180ed4a 425 }
Racer01014 0:5e35c180ed4a 426
Racer01014 0:5e35c180ed4a 427 // Check if stalled
Racer01014 0:5e35c180ed4a 428 if (ep[PHY_TO_LOG(endpoint)].in[bf] & CMDSTS_S) {
Racer01014 0:5e35c180ed4a 429 return EP_STALLED;
Racer01014 0:5e35c180ed4a 430 }
Racer01014 0:5e35c180ed4a 431
Racer01014 0:5e35c180ed4a 432 return EP_COMPLETED;
Racer01014 0:5e35c180ed4a 433 }
Racer01014 0:5e35c180ed4a 434
Racer01014 0:5e35c180ed4a 435 void USBHAL::stallEndpoint(uint8_t endpoint) {
Racer01014 0:5e35c180ed4a 436
Racer01014 0:5e35c180ed4a 437 // FIX: should this clear active bit?
Racer01014 0:5e35c180ed4a 438 if (IN_EP(endpoint)) {
Racer01014 0:5e35c180ed4a 439 ep[PHY_TO_LOG(endpoint)].in[0] |= CMDSTS_S;
Racer01014 0:5e35c180ed4a 440 ep[PHY_TO_LOG(endpoint)].in[1] |= CMDSTS_S;
Racer01014 0:5e35c180ed4a 441 } else {
Racer01014 0:5e35c180ed4a 442 ep[PHY_TO_LOG(endpoint)].out[0] |= CMDSTS_S;
Racer01014 0:5e35c180ed4a 443 ep[PHY_TO_LOG(endpoint)].out[1] |= CMDSTS_S;
Racer01014 0:5e35c180ed4a 444 }
Racer01014 0:5e35c180ed4a 445 }
Racer01014 0:5e35c180ed4a 446
Racer01014 0:5e35c180ed4a 447 void USBHAL::unstallEndpoint(uint8_t endpoint) {
Racer01014 0:5e35c180ed4a 448 if (LPC_USB->EPBUFCFG & EP(endpoint)) {
Racer01014 0:5e35c180ed4a 449 // Double buffered
Racer01014 0:5e35c180ed4a 450 if (IN_EP(endpoint)) {
Racer01014 0:5e35c180ed4a 451 ep[PHY_TO_LOG(endpoint)].in[0] = 0; // S = 0
Racer01014 0:5e35c180ed4a 452 ep[PHY_TO_LOG(endpoint)].in[1] = 0; // S = 0
Racer01014 0:5e35c180ed4a 453
Racer01014 0:5e35c180ed4a 454 if (LPC_USB->EPINUSE & EP(endpoint)) {
Racer01014 0:5e35c180ed4a 455 ep[PHY_TO_LOG(endpoint)].in[1] = CMDSTS_TR; // S = 0, TR = 1, TV = 0
Racer01014 0:5e35c180ed4a 456 } else {
Racer01014 0:5e35c180ed4a 457 ep[PHY_TO_LOG(endpoint)].in[0] = CMDSTS_TR; // S = 0, TR = 1, TV = 0
Racer01014 0:5e35c180ed4a 458 }
Racer01014 0:5e35c180ed4a 459 } else {
Racer01014 0:5e35c180ed4a 460 ep[PHY_TO_LOG(endpoint)].out[0] = 0; // S = 0
Racer01014 0:5e35c180ed4a 461 ep[PHY_TO_LOG(endpoint)].out[1] = 0; // S = 0
Racer01014 0:5e35c180ed4a 462
Racer01014 0:5e35c180ed4a 463 if (LPC_USB->EPINUSE & EP(endpoint)) {
Racer01014 0:5e35c180ed4a 464 ep[PHY_TO_LOG(endpoint)].out[1] = CMDSTS_TR; // S = 0, TR = 1, TV = 0
Racer01014 0:5e35c180ed4a 465 } else {
Racer01014 0:5e35c180ed4a 466 ep[PHY_TO_LOG(endpoint)].out[0] = CMDSTS_TR; // S = 0, TR = 1, TV = 0
Racer01014 0:5e35c180ed4a 467 }
Racer01014 0:5e35c180ed4a 468 }
Racer01014 0:5e35c180ed4a 469 } else {
Racer01014 0:5e35c180ed4a 470 // Single buffered
Racer01014 0:5e35c180ed4a 471 if (IN_EP(endpoint)) {
Racer01014 0:5e35c180ed4a 472 ep[PHY_TO_LOG(endpoint)].in[0] = CMDSTS_TR; // S = 0, TR = 1, TV = 0
Racer01014 0:5e35c180ed4a 473 } else {
Racer01014 0:5e35c180ed4a 474 ep[PHY_TO_LOG(endpoint)].out[0] = CMDSTS_TR; // S = 0, TR = 1, TV = 0
Racer01014 0:5e35c180ed4a 475 }
Racer01014 0:5e35c180ed4a 476 }
Racer01014 0:5e35c180ed4a 477 }
Racer01014 0:5e35c180ed4a 478
Racer01014 0:5e35c180ed4a 479 bool USBHAL::getEndpointStallState(unsigned char endpoint) {
Racer01014 0:5e35c180ed4a 480 if (IN_EP(endpoint)) {
Racer01014 0:5e35c180ed4a 481 if (LPC_USB->EPINUSE & EP(endpoint)) {
Racer01014 0:5e35c180ed4a 482 if (ep[PHY_TO_LOG(endpoint)].in[1] & CMDSTS_S) {
Racer01014 0:5e35c180ed4a 483 return true;
Racer01014 0:5e35c180ed4a 484 }
Racer01014 0:5e35c180ed4a 485 } else {
Racer01014 0:5e35c180ed4a 486 if (ep[PHY_TO_LOG(endpoint)].in[0] & CMDSTS_S) {
Racer01014 0:5e35c180ed4a 487 return true;
Racer01014 0:5e35c180ed4a 488 }
Racer01014 0:5e35c180ed4a 489 }
Racer01014 0:5e35c180ed4a 490 } else {
Racer01014 0:5e35c180ed4a 491 if (LPC_USB->EPINUSE & EP(endpoint)) {
Racer01014 0:5e35c180ed4a 492 if (ep[PHY_TO_LOG(endpoint)].out[1] & CMDSTS_S) {
Racer01014 0:5e35c180ed4a 493 return true;
Racer01014 0:5e35c180ed4a 494 }
Racer01014 0:5e35c180ed4a 495 } else {
Racer01014 0:5e35c180ed4a 496 if (ep[PHY_TO_LOG(endpoint)].out[0] & CMDSTS_S) {
Racer01014 0:5e35c180ed4a 497 return true;
Racer01014 0:5e35c180ed4a 498 }
Racer01014 0:5e35c180ed4a 499 }
Racer01014 0:5e35c180ed4a 500 }
Racer01014 0:5e35c180ed4a 501
Racer01014 0:5e35c180ed4a 502 return false;
Racer01014 0:5e35c180ed4a 503 }
Racer01014 0:5e35c180ed4a 504
Racer01014 0:5e35c180ed4a 505 bool USBHAL::realiseEndpoint(uint8_t endpoint, uint32_t maxPacket, uint32_t options) {
Racer01014 0:5e35c180ed4a 506 uint32_t tmpEpRamPtr;
Racer01014 0:5e35c180ed4a 507
Racer01014 0:5e35c180ed4a 508 if (endpoint > LAST_PHYSICAL_ENDPOINT) {
Racer01014 0:5e35c180ed4a 509 return false;
Racer01014 0:5e35c180ed4a 510 }
Racer01014 0:5e35c180ed4a 511
Racer01014 0:5e35c180ed4a 512 // Not applicable to the control endpoints
Racer01014 0:5e35c180ed4a 513 if ((endpoint==EP0IN) || (endpoint==EP0OUT)) {
Racer01014 0:5e35c180ed4a 514 return false;
Racer01014 0:5e35c180ed4a 515 }
Racer01014 0:5e35c180ed4a 516
Racer01014 0:5e35c180ed4a 517 // Allocate buffers in USB RAM
Racer01014 0:5e35c180ed4a 518 tmpEpRamPtr = epRamPtr;
Racer01014 0:5e35c180ed4a 519
Racer01014 0:5e35c180ed4a 520 // Must be 64 byte aligned
Racer01014 0:5e35c180ed4a 521 tmpEpRamPtr = ROUND_UP_TO_MULTIPLE(tmpEpRamPtr, 64);
Racer01014 0:5e35c180ed4a 522
Racer01014 0:5e35c180ed4a 523 if ((tmpEpRamPtr + maxPacket) > (USB_RAM_START + USB_RAM_SIZE)) {
Racer01014 0:5e35c180ed4a 524 // Out of memory
Racer01014 0:5e35c180ed4a 525 return false;
Racer01014 0:5e35c180ed4a 526 }
Racer01014 0:5e35c180ed4a 527
Racer01014 0:5e35c180ed4a 528 // Allocate first buffer
Racer01014 0:5e35c180ed4a 529 endpointState[endpoint].buffer[0] = tmpEpRamPtr;
Racer01014 0:5e35c180ed4a 530 tmpEpRamPtr += maxPacket;
Racer01014 0:5e35c180ed4a 531
Racer01014 0:5e35c180ed4a 532 if (!(options & SINGLE_BUFFERED)) {
Racer01014 0:5e35c180ed4a 533 // Must be 64 byte aligned
Racer01014 0:5e35c180ed4a 534 tmpEpRamPtr = ROUND_UP_TO_MULTIPLE(tmpEpRamPtr, 64);
Racer01014 0:5e35c180ed4a 535
Racer01014 0:5e35c180ed4a 536 if ((tmpEpRamPtr + maxPacket) > (USB_RAM_START + USB_RAM_SIZE)) {
Racer01014 0:5e35c180ed4a 537 // Out of memory
Racer01014 0:5e35c180ed4a 538 return false;
Racer01014 0:5e35c180ed4a 539 }
Racer01014 0:5e35c180ed4a 540
Racer01014 0:5e35c180ed4a 541 // Allocate second buffer
Racer01014 0:5e35c180ed4a 542 endpointState[endpoint].buffer[1] = tmpEpRamPtr;
Racer01014 0:5e35c180ed4a 543 tmpEpRamPtr += maxPacket;
Racer01014 0:5e35c180ed4a 544 }
Racer01014 0:5e35c180ed4a 545
Racer01014 0:5e35c180ed4a 546 // Commit to this USB RAM allocation
Racer01014 0:5e35c180ed4a 547 epRamPtr = tmpEpRamPtr;
Racer01014 0:5e35c180ed4a 548
Racer01014 0:5e35c180ed4a 549 // Remaining endpoint state values
Racer01014 0:5e35c180ed4a 550 endpointState[endpoint].maxPacket = maxPacket;
Racer01014 0:5e35c180ed4a 551 endpointState[endpoint].options = options;
Racer01014 0:5e35c180ed4a 552
Racer01014 0:5e35c180ed4a 553 // Enable double buffering if required
Racer01014 0:5e35c180ed4a 554 if (options & SINGLE_BUFFERED) {
Racer01014 0:5e35c180ed4a 555 LPC_USB->EPBUFCFG &= ~EP(endpoint);
Racer01014 0:5e35c180ed4a 556 } else {
Racer01014 0:5e35c180ed4a 557 // Double buffered
Racer01014 0:5e35c180ed4a 558 LPC_USB->EPBUFCFG |= EP(endpoint);
Racer01014 0:5e35c180ed4a 559 }
Racer01014 0:5e35c180ed4a 560
Racer01014 0:5e35c180ed4a 561 // Enable interrupt
Racer01014 0:5e35c180ed4a 562 LPC_USB->INTEN |= EP(endpoint);
Racer01014 0:5e35c180ed4a 563
Racer01014 0:5e35c180ed4a 564 // Enable endpoint
Racer01014 0:5e35c180ed4a 565 unstallEndpoint(endpoint);
Racer01014 0:5e35c180ed4a 566 return true;
Racer01014 0:5e35c180ed4a 567 }
Racer01014 0:5e35c180ed4a 568
Racer01014 0:5e35c180ed4a 569 void USBHAL::remoteWakeup(void) {
Racer01014 0:5e35c180ed4a 570 // Clearing DSUS bit initiates a remote wakeup if the
Racer01014 0:5e35c180ed4a 571 // device is currently enabled and suspended - otherwise
Racer01014 0:5e35c180ed4a 572 // it has no effect.
Racer01014 0:5e35c180ed4a 573 LPC_USB->DEVCMDSTAT = devCmdStat & ~DSUS;
Racer01014 0:5e35c180ed4a 574 }
Racer01014 0:5e35c180ed4a 575
Racer01014 0:5e35c180ed4a 576
Racer01014 0:5e35c180ed4a 577 static void disableEndpoints(void) {
Racer01014 0:5e35c180ed4a 578 uint32_t logEp;
Racer01014 0:5e35c180ed4a 579
Racer01014 0:5e35c180ed4a 580 // Ref. Table 158 "When a bus reset is received, software
Racer01014 0:5e35c180ed4a 581 // must set the disable bit of all endpoints to 1".
Racer01014 0:5e35c180ed4a 582
Racer01014 0:5e35c180ed4a 583 for (logEp = 1; logEp < NUMBER_OF_LOGICAL_ENDPOINTS; logEp++) {
Racer01014 0:5e35c180ed4a 584 ep[logEp].out[0] = CMDSTS_D;
Racer01014 0:5e35c180ed4a 585 ep[logEp].out[1] = CMDSTS_D;
Racer01014 0:5e35c180ed4a 586 ep[logEp].in[0] = CMDSTS_D;
Racer01014 0:5e35c180ed4a 587 ep[logEp].in[1] = CMDSTS_D;
Racer01014 0:5e35c180ed4a 588 }
Racer01014 0:5e35c180ed4a 589
Racer01014 0:5e35c180ed4a 590 // Start of USB RAM for endpoints > 0
Racer01014 0:5e35c180ed4a 591 epRamPtr = usbRamPtr;
Racer01014 0:5e35c180ed4a 592 }
Racer01014 0:5e35c180ed4a 593
Racer01014 0:5e35c180ed4a 594
Racer01014 0:5e35c180ed4a 595
Racer01014 0:5e35c180ed4a 596 void USBHAL::_usbisr(void) {
Racer01014 0:5e35c180ed4a 597 instance->usbisr();
Racer01014 0:5e35c180ed4a 598 }
Racer01014 0:5e35c180ed4a 599
Racer01014 0:5e35c180ed4a 600 void USBHAL::usbisr(void) {
Racer01014 0:5e35c180ed4a 601 // Start of frame
Racer01014 0:5e35c180ed4a 602 if (LPC_USB->INTSTAT & FRAME_INT) {
Racer01014 0:5e35c180ed4a 603 // Clear SOF interrupt
Racer01014 0:5e35c180ed4a 604 LPC_USB->INTSTAT = FRAME_INT;
Racer01014 0:5e35c180ed4a 605
Racer01014 0:5e35c180ed4a 606 // SOF event, read frame number
Racer01014 0:5e35c180ed4a 607 SOF(FRAME_NR(LPC_USB->INFO));
Racer01014 0:5e35c180ed4a 608 }
Racer01014 0:5e35c180ed4a 609
Racer01014 0:5e35c180ed4a 610 // Device state
Racer01014 0:5e35c180ed4a 611 if (LPC_USB->INTSTAT & DEV_INT) {
Racer01014 0:5e35c180ed4a 612 LPC_USB->INTSTAT = DEV_INT;
Racer01014 0:5e35c180ed4a 613
Racer01014 0:5e35c180ed4a 614 if (LPC_USB->DEVCMDSTAT & DSUS_C) {
Racer01014 0:5e35c180ed4a 615 // Suspend status changed
Racer01014 0:5e35c180ed4a 616 LPC_USB->DEVCMDSTAT = devCmdStat | DSUS_C;
Racer01014 0:5e35c180ed4a 617 if((LPC_USB->DEVCMDSTAT & DSUS) != 0) {
Racer01014 0:5e35c180ed4a 618 suspendStateChanged(1);
Racer01014 0:5e35c180ed4a 619 }
Racer01014 0:5e35c180ed4a 620 }
Racer01014 0:5e35c180ed4a 621
Racer01014 0:5e35c180ed4a 622 if (LPC_USB->DEVCMDSTAT & DRES_C) {
Racer01014 0:5e35c180ed4a 623 // Bus reset
Racer01014 0:5e35c180ed4a 624 LPC_USB->DEVCMDSTAT = devCmdStat | DRES_C;
Racer01014 0:5e35c180ed4a 625
Racer01014 0:5e35c180ed4a 626 suspendStateChanged(0);
Racer01014 0:5e35c180ed4a 627
Racer01014 0:5e35c180ed4a 628 // Disable endpoints > 0
Racer01014 0:5e35c180ed4a 629 disableEndpoints();
Racer01014 0:5e35c180ed4a 630
Racer01014 0:5e35c180ed4a 631 // Bus reset event
Racer01014 0:5e35c180ed4a 632 busReset();
Racer01014 0:5e35c180ed4a 633 }
Racer01014 0:5e35c180ed4a 634 }
Racer01014 0:5e35c180ed4a 635
Racer01014 0:5e35c180ed4a 636 // Endpoint 0
Racer01014 0:5e35c180ed4a 637 if (LPC_USB->INTSTAT & EP(EP0OUT)) {
Racer01014 0:5e35c180ed4a 638 // Clear EP0OUT/SETUP interrupt
Racer01014 0:5e35c180ed4a 639 LPC_USB->INTSTAT = EP(EP0OUT);
Racer01014 0:5e35c180ed4a 640
Racer01014 0:5e35c180ed4a 641 // Check if SETUP
Racer01014 0:5e35c180ed4a 642 if (LPC_USB->DEVCMDSTAT & SETUP) {
Racer01014 0:5e35c180ed4a 643 // Clear Active and Stall bits for EP0
Racer01014 0:5e35c180ed4a 644 // Documentation does not make it clear if we must use the
Racer01014 0:5e35c180ed4a 645 // EPSKIP register to achieve this, Fig. 16 and NXP reference
Racer01014 0:5e35c180ed4a 646 // code suggests we can just clear the Active bits - check with
Racer01014 0:5e35c180ed4a 647 // NXP to be sure.
Racer01014 0:5e35c180ed4a 648 ep[0].in[0] = 0;
Racer01014 0:5e35c180ed4a 649 ep[0].out[0] = 0;
Racer01014 0:5e35c180ed4a 650
Racer01014 0:5e35c180ed4a 651 // Clear EP0IN interrupt
Racer01014 0:5e35c180ed4a 652 LPC_USB->INTSTAT = EP(EP0IN);
Racer01014 0:5e35c180ed4a 653
Racer01014 0:5e35c180ed4a 654 // Clear SETUP (and INTONNAK_CI/O) in device status register
Racer01014 0:5e35c180ed4a 655 LPC_USB->DEVCMDSTAT = devCmdStat | SETUP;
Racer01014 0:5e35c180ed4a 656
Racer01014 0:5e35c180ed4a 657 // EP0 SETUP event (SETUP data received)
Racer01014 0:5e35c180ed4a 658 EP0setupCallback();
Racer01014 0:5e35c180ed4a 659 } else {
Racer01014 0:5e35c180ed4a 660 // EP0OUT ACK event (OUT data received)
Racer01014 0:5e35c180ed4a 661 EP0out();
Racer01014 0:5e35c180ed4a 662 }
Racer01014 0:5e35c180ed4a 663 }
Racer01014 0:5e35c180ed4a 664
Racer01014 0:5e35c180ed4a 665 if (LPC_USB->INTSTAT & EP(EP0IN)) {
Racer01014 0:5e35c180ed4a 666 // Clear EP0IN interrupt
Racer01014 0:5e35c180ed4a 667 LPC_USB->INTSTAT = EP(EP0IN);
Racer01014 0:5e35c180ed4a 668
Racer01014 0:5e35c180ed4a 669 // EP0IN ACK event (IN data sent)
Racer01014 0:5e35c180ed4a 670 EP0in();
Racer01014 0:5e35c180ed4a 671 }
Racer01014 0:5e35c180ed4a 672
Racer01014 0:5e35c180ed4a 673 for (uint8_t num = 2; num < 5*2; num++) {
Racer01014 0:5e35c180ed4a 674 if (LPC_USB->INTSTAT & EP(num)) {
Racer01014 0:5e35c180ed4a 675 LPC_USB->INTSTAT = EP(num);
Racer01014 0:5e35c180ed4a 676 epComplete |= EP(num);
Racer01014 0:5e35c180ed4a 677 if ((instance->*(epCallback[num - 2]))()) {
Racer01014 0:5e35c180ed4a 678 epComplete &= ~EP(num);
Racer01014 0:5e35c180ed4a 679 }
Racer01014 0:5e35c180ed4a 680 }
Racer01014 0:5e35c180ed4a 681 }
Racer01014 0:5e35c180ed4a 682 }
Racer01014 0:5e35c180ed4a 683
Racer01014 0:5e35c180ed4a 684 #endif