Norimasa Okamoto
USB device stack
Fork of
USBDevice
by 
mbed official
USBDevice/USBHAL_LPC40.cpp@10:1e3d126a322b, 2013-05-30 (annotated)
- Committer:
- emilmont
- Date:
- Thu May 30 17:16:57 2013 +0100
- Revision:
- 10:1e3d126a322b
- Child:
- 12:6030a12b6c62
Add LPC4088 target
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| emilmont | 10:1e3d126a322b | 1 | /* Copyright (c) 2010-2011 mbed.org, MIT License |
| emilmont | 10:1e3d126a322b | 2 | * |
| emilmont | 10:1e3d126a322b | 3 | * Permission is hereby granted, free of charge, to any person obtaining a copy of this software |
| emilmont | 10:1e3d126a322b | 4 | * and associated documentation files (the "Software"), to deal in the Software without |
| emilmont | 10:1e3d126a322b | 5 | * restriction, including without limitation the rights to use, copy, modify, merge, publish, |
| emilmont | 10:1e3d126a322b | 6 | * distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the |
| emilmont | 10:1e3d126a322b | 7 | * Software is furnished to do so, subject to the following conditions: |
| emilmont | 10:1e3d126a322b | 8 | * |
| emilmont | 10:1e3d126a322b | 9 | * The above copyright notice and this permission notice shall be included in all copies or |
| emilmont | 10:1e3d126a322b | 10 | * substantial portions of the Software. |
| emilmont | 10:1e3d126a322b | 11 | * |
| emilmont | 10:1e3d126a322b | 12 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING |
| emilmont | 10:1e3d126a322b | 13 | * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| emilmont | 10:1e3d126a322b | 14 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, |
| emilmont | 10:1e3d126a322b | 15 | * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| emilmont | 10:1e3d126a322b | 16 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| emilmont | 10:1e3d126a322b | 17 | */ |
| emilmont | 10:1e3d126a322b | 18 | |
| emilmont | 10:1e3d126a322b | 19 | #if defined(TARGET_LPC4088) |
| emilmont | 10:1e3d126a322b | 20 | |
| emilmont | 10:1e3d126a322b | 21 | #include "USBHAL.h" |
| emilmont | 10:1e3d126a322b | 22 | |
| emilmont | 10:1e3d126a322b | 23 | |
| emilmont | 10:1e3d126a322b | 24 | // Get endpoint direction |
| emilmont | 10:1e3d126a322b | 25 | #define IN_EP(endpoint) ((endpoint) & 1U ? true : false) |
| emilmont | 10:1e3d126a322b | 26 | #define OUT_EP(endpoint) ((endpoint) & 1U ? false : true) |
| emilmont | 10:1e3d126a322b | 27 | |
| emilmont | 10:1e3d126a322b | 28 | // Convert physical endpoint number to register bit |
| emilmont | 10:1e3d126a322b | 29 | #define EP(endpoint) (1UL<<endpoint) |
| emilmont | 10:1e3d126a322b | 30 | |
| emilmont | 10:1e3d126a322b | 31 | // Power Control for Peripherals register |
| emilmont | 10:1e3d126a322b | 32 | #define PCUSB (1UL<<31) |
| emilmont | 10:1e3d126a322b | 33 | |
| emilmont | 10:1e3d126a322b | 34 | // USB Clock Control register |
| emilmont | 10:1e3d126a322b | 35 | #define DEV_CLK_EN (1UL<<1) |
| emilmont | 10:1e3d126a322b | 36 | #define AHB_CLK_EN (1UL<<4) |
| emilmont | 10:1e3d126a322b | 37 | |
| emilmont | 10:1e3d126a322b | 38 | // USB Clock Status register |
| emilmont | 10:1e3d126a322b | 39 | #define DEV_CLK_ON (1UL<<1) |
| emilmont | 10:1e3d126a322b | 40 | #define AHB_CLK_ON (1UL<<4) |
| emilmont | 10:1e3d126a322b | 41 | |
| emilmont | 10:1e3d126a322b | 42 | // USB Device Interupt registers |
| emilmont | 10:1e3d126a322b | 43 | #define FRAME (1UL<<0) |
| emilmont | 10:1e3d126a322b | 44 | #define EP_FAST (1UL<<1) |
| emilmont | 10:1e3d126a322b | 45 | #define EP_SLOW (1UL<<2) |
| emilmont | 10:1e3d126a322b | 46 | #define DEV_STAT (1UL<<3) |
| emilmont | 10:1e3d126a322b | 47 | #define CCEMPTY (1UL<<4) |
| emilmont | 10:1e3d126a322b | 48 | #define CDFULL (1UL<<5) |
| emilmont | 10:1e3d126a322b | 49 | #define RxENDPKT (1UL<<6) |
| emilmont | 10:1e3d126a322b | 50 | #define TxENDPKT (1UL<<7) |
| emilmont | 10:1e3d126a322b | 51 | #define EP_RLZED (1UL<<8) |
| emilmont | 10:1e3d126a322b | 52 | #define ERR_INT (1UL<<9) |
| emilmont | 10:1e3d126a322b | 53 | |
| emilmont | 10:1e3d126a322b | 54 | // USB Control register |
| emilmont | 10:1e3d126a322b | 55 | #define RD_EN (1<<0) |
| emilmont | 10:1e3d126a322b | 56 | #define WR_EN (1<<1) |
| emilmont | 10:1e3d126a322b | 57 | #define LOG_ENDPOINT(endpoint) ((endpoint>>1)<<2) |
| emilmont | 10:1e3d126a322b | 58 | |
| emilmont | 10:1e3d126a322b | 59 | // USB Receive Packet Length register |
| emilmont | 10:1e3d126a322b | 60 | #define DV (1UL<<10) |
| emilmont | 10:1e3d126a322b | 61 | #define PKT_RDY (1UL<<11) |
| emilmont | 10:1e3d126a322b | 62 | #define PKT_LNGTH_MASK (0x3ff) |
| emilmont | 10:1e3d126a322b | 63 | |
| emilmont | 10:1e3d126a322b | 64 | // Serial Interface Engine (SIE) |
| emilmont | 10:1e3d126a322b | 65 | #define SIE_WRITE (0x01) |
| emilmont | 10:1e3d126a322b | 66 | #define SIE_READ (0x02) |
| emilmont | 10:1e3d126a322b | 67 | #define SIE_COMMAND (0x05) |
| emilmont | 10:1e3d126a322b | 68 | #define SIE_CMD_CODE(phase, data) ((phase<<8)|(data<<16)) |
| emilmont | 10:1e3d126a322b | 69 | |
| emilmont | 10:1e3d126a322b | 70 | // SIE Command codes |
| emilmont | 10:1e3d126a322b | 71 | #define SIE_CMD_SET_ADDRESS (0xD0) |
| emilmont | 10:1e3d126a322b | 72 | #define SIE_CMD_CONFIGURE_DEVICE (0xD8) |
| emilmont | 10:1e3d126a322b | 73 | #define SIE_CMD_SET_MODE (0xF3) |
| emilmont | 10:1e3d126a322b | 74 | #define SIE_CMD_READ_FRAME_NUMBER (0xF5) |
| emilmont | 10:1e3d126a322b | 75 | #define SIE_CMD_READ_TEST_REGISTER (0xFD) |
| emilmont | 10:1e3d126a322b | 76 | #define SIE_CMD_SET_DEVICE_STATUS (0xFE) |
| emilmont | 10:1e3d126a322b | 77 | #define SIE_CMD_GET_DEVICE_STATUS (0xFE) |
| emilmont | 10:1e3d126a322b | 78 | #define SIE_CMD_GET_ERROR_CODE (0xFF) |
| emilmont | 10:1e3d126a322b | 79 | #define SIE_CMD_READ_ERROR_STATUS (0xFB) |
| emilmont | 10:1e3d126a322b | 80 | |
| emilmont | 10:1e3d126a322b | 81 | #define SIE_CMD_SELECT_ENDPOINT(endpoint) (0x00+endpoint) |
| emilmont | 10:1e3d126a322b | 82 | #define SIE_CMD_SELECT_ENDPOINT_CLEAR_INTERRUPT(endpoint) (0x40+endpoint) |
| emilmont | 10:1e3d126a322b | 83 | #define SIE_CMD_SET_ENDPOINT_STATUS(endpoint) (0x40+endpoint) |
| emilmont | 10:1e3d126a322b | 84 | |
| emilmont | 10:1e3d126a322b | 85 | #define SIE_CMD_CLEAR_BUFFER (0xF2) |
| emilmont | 10:1e3d126a322b | 86 | #define SIE_CMD_VALIDATE_BUFFER (0xFA) |
| emilmont | 10:1e3d126a322b | 87 | |
| emilmont | 10:1e3d126a322b | 88 | // SIE Device Status register |
| emilmont | 10:1e3d126a322b | 89 | #define SIE_DS_CON (1<<0) |
| emilmont | 10:1e3d126a322b | 90 | #define SIE_DS_CON_CH (1<<1) |
| emilmont | 10:1e3d126a322b | 91 | #define SIE_DS_SUS (1<<2) |
| emilmont | 10:1e3d126a322b | 92 | #define SIE_DS_SUS_CH (1<<3) |
| emilmont | 10:1e3d126a322b | 93 | #define SIE_DS_RST (1<<4) |
| emilmont | 10:1e3d126a322b | 94 | |
| emilmont | 10:1e3d126a322b | 95 | // SIE Device Set Address register |
| emilmont | 10:1e3d126a322b | 96 | #define SIE_DSA_DEV_EN (1<<7) |
| emilmont | 10:1e3d126a322b | 97 | |
| emilmont | 10:1e3d126a322b | 98 | // SIE Configue Device register |
| emilmont | 10:1e3d126a322b | 99 | #define SIE_CONF_DEVICE (1<<0) |
| emilmont | 10:1e3d126a322b | 100 | |
| emilmont | 10:1e3d126a322b | 101 | // Select Endpoint register |
| emilmont | 10:1e3d126a322b | 102 | #define SIE_SE_FE (1<<0) |
| emilmont | 10:1e3d126a322b | 103 | #define SIE_SE_ST (1<<1) |
| emilmont | 10:1e3d126a322b | 104 | #define SIE_SE_STP (1<<2) |
| emilmont | 10:1e3d126a322b | 105 | #define SIE_SE_PO (1<<3) |
| emilmont | 10:1e3d126a322b | 106 | #define SIE_SE_EPN (1<<4) |
| emilmont | 10:1e3d126a322b | 107 | #define SIE_SE_B_1_FULL (1<<5) |
| emilmont | 10:1e3d126a322b | 108 | #define SIE_SE_B_2_FULL (1<<6) |
| emilmont | 10:1e3d126a322b | 109 | |
| emilmont | 10:1e3d126a322b | 110 | // Set Endpoint Status command |
| emilmont | 10:1e3d126a322b | 111 | #define SIE_SES_ST (1<<0) |
| emilmont | 10:1e3d126a322b | 112 | #define SIE_SES_DA (1<<5) |
| emilmont | 10:1e3d126a322b | 113 | #define SIE_SES_RF_MO (1<<6) |
| emilmont | 10:1e3d126a322b | 114 | #define SIE_SES_CND_ST (1<<7) |
| emilmont | 10:1e3d126a322b | 115 | |
| emilmont | 10:1e3d126a322b | 116 | |
| emilmont | 10:1e3d126a322b | 117 | USBHAL * USBHAL::instance; |
| emilmont | 10:1e3d126a322b | 118 | |
| emilmont | 10:1e3d126a322b | 119 | static volatile int epComplete; |
| emilmont | 10:1e3d126a322b | 120 | static uint32_t endpointStallState; |
| emilmont | 10:1e3d126a322b | 121 | |
| emilmont | 10:1e3d126a322b | 122 | static void SIECommand(uint32_t command) { |
| emilmont | 10:1e3d126a322b | 123 | // The command phase of a SIE transaction |
| emilmont | 10:1e3d126a322b | 124 | LPC_USB->DevIntClr = CCEMPTY; |
| emilmont | 10:1e3d126a322b | 125 | LPC_USB->CmdCode = SIE_CMD_CODE(SIE_COMMAND, command); |
| emilmont | 10:1e3d126a322b | 126 | while (!(LPC_USB->DevIntSt & CCEMPTY)); |
| emilmont | 10:1e3d126a322b | 127 | } |
| emilmont | 10:1e3d126a322b | 128 | |
| emilmont | 10:1e3d126a322b | 129 | static void SIEWriteData(uint8_t data) { |
| emilmont | 10:1e3d126a322b | 130 | // The data write phase of a SIE transaction |
| emilmont | 10:1e3d126a322b | 131 | LPC_USB->DevIntClr = CCEMPTY; |
| emilmont | 10:1e3d126a322b | 132 | LPC_USB->CmdCode = SIE_CMD_CODE(SIE_WRITE, data); |
| emilmont | 10:1e3d126a322b | 133 | while (!(LPC_USB->DevIntSt & CCEMPTY)); |
| emilmont | 10:1e3d126a322b | 134 | } |
| emilmont | 10:1e3d126a322b | 135 | |
| emilmont | 10:1e3d126a322b | 136 | static uint8_t SIEReadData(uint32_t command) { |
| emilmont | 10:1e3d126a322b | 137 | // The data read phase of a SIE transaction |
| emilmont | 10:1e3d126a322b | 138 | LPC_USB->DevIntClr = CDFULL; |
| emilmont | 10:1e3d126a322b | 139 | LPC_USB->CmdCode = SIE_CMD_CODE(SIE_READ, command); |
| emilmont | 10:1e3d126a322b | 140 | while (!(LPC_USB->DevIntSt & CDFULL)); |
| emilmont | 10:1e3d126a322b | 141 | return (uint8_t)LPC_USB->CmdData; |
| emilmont | 10:1e3d126a322b | 142 | } |
| emilmont | 10:1e3d126a322b | 143 | |
| emilmont | 10:1e3d126a322b | 144 | static void SIEsetDeviceStatus(uint8_t status) { |
| emilmont | 10:1e3d126a322b | 145 | // Write SIE device status register |
| emilmont | 10:1e3d126a322b | 146 | SIECommand(SIE_CMD_SET_DEVICE_STATUS); |
| emilmont | 10:1e3d126a322b | 147 | SIEWriteData(status); |
| emilmont | 10:1e3d126a322b | 148 | } |
| emilmont | 10:1e3d126a322b | 149 | |
| emilmont | 10:1e3d126a322b | 150 | static uint8_t SIEgetDeviceStatus(void) { |
| emilmont | 10:1e3d126a322b | 151 | // Read SIE device status register |
| emilmont | 10:1e3d126a322b | 152 | SIECommand(SIE_CMD_GET_DEVICE_STATUS); |
| emilmont | 10:1e3d126a322b | 153 | return SIEReadData(SIE_CMD_GET_DEVICE_STATUS); |
| emilmont | 10:1e3d126a322b | 154 | } |
| emilmont | 10:1e3d126a322b | 155 | |
| emilmont | 10:1e3d126a322b | 156 | void SIEsetAddress(uint8_t address) { |
| emilmont | 10:1e3d126a322b | 157 | // Write SIE device address register |
| emilmont | 10:1e3d126a322b | 158 | SIECommand(SIE_CMD_SET_ADDRESS); |
| emilmont | 10:1e3d126a322b | 159 | SIEWriteData((address & 0x7f) | SIE_DSA_DEV_EN); |
| emilmont | 10:1e3d126a322b | 160 | } |
| emilmont | 10:1e3d126a322b | 161 | |
| emilmont | 10:1e3d126a322b | 162 | static uint8_t SIEselectEndpoint(uint8_t endpoint) { |
| emilmont | 10:1e3d126a322b | 163 | // SIE select endpoint command |
| emilmont | 10:1e3d126a322b | 164 | SIECommand(SIE_CMD_SELECT_ENDPOINT(endpoint)); |
| emilmont | 10:1e3d126a322b | 165 | return SIEReadData(SIE_CMD_SELECT_ENDPOINT(endpoint)); |
| emilmont | 10:1e3d126a322b | 166 | } |
| emilmont | 10:1e3d126a322b | 167 | |
| emilmont | 10:1e3d126a322b | 168 | static uint8_t SIEclearBuffer(void) { |
| emilmont | 10:1e3d126a322b | 169 | // SIE clear buffer command |
| emilmont | 10:1e3d126a322b | 170 | SIECommand(SIE_CMD_CLEAR_BUFFER); |
| emilmont | 10:1e3d126a322b | 171 | return SIEReadData(SIE_CMD_CLEAR_BUFFER); |
| emilmont | 10:1e3d126a322b | 172 | } |
| emilmont | 10:1e3d126a322b | 173 | |
| emilmont | 10:1e3d126a322b | 174 | static void SIEvalidateBuffer(void) { |
| emilmont | 10:1e3d126a322b | 175 | // SIE validate buffer command |
| emilmont | 10:1e3d126a322b | 176 | SIECommand(SIE_CMD_VALIDATE_BUFFER); |
| emilmont | 10:1e3d126a322b | 177 | } |
| emilmont | 10:1e3d126a322b | 178 | |
| emilmont | 10:1e3d126a322b | 179 | static void SIEsetEndpointStatus(uint8_t endpoint, uint8_t status) { |
| emilmont | 10:1e3d126a322b | 180 | // SIE set endpoint status command |
| emilmont | 10:1e3d126a322b | 181 | SIECommand(SIE_CMD_SET_ENDPOINT_STATUS(endpoint)); |
| emilmont | 10:1e3d126a322b | 182 | SIEWriteData(status); |
| emilmont | 10:1e3d126a322b | 183 | } |
| emilmont | 10:1e3d126a322b | 184 | |
| emilmont | 10:1e3d126a322b | 185 | static uint16_t SIEgetFrameNumber(void) __attribute__ ((unused)); |
| emilmont | 10:1e3d126a322b | 186 | static uint16_t SIEgetFrameNumber(void) { |
| emilmont | 10:1e3d126a322b | 187 | // Read current frame number |
| emilmont | 10:1e3d126a322b | 188 | uint16_t lowByte; |
| emilmont | 10:1e3d126a322b | 189 | uint16_t highByte; |
| emilmont | 10:1e3d126a322b | 190 | |
| emilmont | 10:1e3d126a322b | 191 | SIECommand(SIE_CMD_READ_FRAME_NUMBER); |
| emilmont | 10:1e3d126a322b | 192 | lowByte = SIEReadData(SIE_CMD_READ_FRAME_NUMBER); |
| emilmont | 10:1e3d126a322b | 193 | highByte = SIEReadData(SIE_CMD_READ_FRAME_NUMBER); |
| emilmont | 10:1e3d126a322b | 194 | |
| emilmont | 10:1e3d126a322b | 195 | return (highByte << 8) | lowByte; |
| emilmont | 10:1e3d126a322b | 196 | } |
| emilmont | 10:1e3d126a322b | 197 | |
| emilmont | 10:1e3d126a322b | 198 | static void SIEconfigureDevice(void) { |
| emilmont | 10:1e3d126a322b | 199 | // SIE Configure device command |
| emilmont | 10:1e3d126a322b | 200 | SIECommand(SIE_CMD_CONFIGURE_DEVICE); |
| emilmont | 10:1e3d126a322b | 201 | SIEWriteData(SIE_CONF_DEVICE); |
| emilmont | 10:1e3d126a322b | 202 | } |
| emilmont | 10:1e3d126a322b | 203 | |
| emilmont | 10:1e3d126a322b | 204 | static void SIEunconfigureDevice(void) { |
| emilmont | 10:1e3d126a322b | 205 | // SIE Configure device command |
| emilmont | 10:1e3d126a322b | 206 | SIECommand(SIE_CMD_CONFIGURE_DEVICE); |
| emilmont | 10:1e3d126a322b | 207 | SIEWriteData(0); |
| emilmont | 10:1e3d126a322b | 208 | } |
| emilmont | 10:1e3d126a322b | 209 | |
| emilmont | 10:1e3d126a322b | 210 | static void SIEconnect(void) { |
| emilmont | 10:1e3d126a322b | 211 | // Connect USB device |
| emilmont | 10:1e3d126a322b | 212 | uint8_t status = SIEgetDeviceStatus(); |
| emilmont | 10:1e3d126a322b | 213 | SIEsetDeviceStatus(status | SIE_DS_CON); |
| emilmont | 10:1e3d126a322b | 214 | } |
| emilmont | 10:1e3d126a322b | 215 | |
| emilmont | 10:1e3d126a322b | 216 | |
| emilmont | 10:1e3d126a322b | 217 | static void SIEdisconnect(void) { |
| emilmont | 10:1e3d126a322b | 218 | // Disconnect USB device |
| emilmont | 10:1e3d126a322b | 219 | uint8_t status = SIEgetDeviceStatus(); |
| emilmont | 10:1e3d126a322b | 220 | SIEsetDeviceStatus(status & ~SIE_DS_CON); |
| emilmont | 10:1e3d126a322b | 221 | } |
| emilmont | 10:1e3d126a322b | 222 | |
| emilmont | 10:1e3d126a322b | 223 | |
| emilmont | 10:1e3d126a322b | 224 | static uint8_t selectEndpointClearInterrupt(uint8_t endpoint) { |
| emilmont | 10:1e3d126a322b | 225 | // Implemented using using EP_INT_CLR. |
| emilmont | 10:1e3d126a322b | 226 | LPC_USB->EpIntClr = EP(endpoint); |
| emilmont | 10:1e3d126a322b | 227 | while (!(LPC_USB->DevIntSt & CDFULL)); |
| emilmont | 10:1e3d126a322b | 228 | return (uint8_t)LPC_USB->CmdData; |
| emilmont | 10:1e3d126a322b | 229 | } |
| emilmont | 10:1e3d126a322b | 230 | |
| emilmont | 10:1e3d126a322b | 231 | |
| emilmont | 10:1e3d126a322b | 232 | static void enableEndpointEvent(uint8_t endpoint) { |
| emilmont | 10:1e3d126a322b | 233 | // Enable an endpoint interrupt |
| emilmont | 10:1e3d126a322b | 234 | LPC_USB->EpIntEn |= EP(endpoint); |
| emilmont | 10:1e3d126a322b | 235 | } |
| emilmont | 10:1e3d126a322b | 236 | |
| emilmont | 10:1e3d126a322b | 237 | static void disableEndpointEvent(uint8_t endpoint) __attribute__ ((unused)); |
| emilmont | 10:1e3d126a322b | 238 | static void disableEndpointEvent(uint8_t endpoint) { |
| emilmont | 10:1e3d126a322b | 239 | // Disable an endpoint interrupt |
| emilmont | 10:1e3d126a322b | 240 | LPC_USB->EpIntEn &= ~EP(endpoint); |
| emilmont | 10:1e3d126a322b | 241 | } |
| emilmont | 10:1e3d126a322b | 242 | |
| emilmont | 10:1e3d126a322b | 243 | static volatile uint32_t __attribute__((used)) dummyRead; |
| emilmont | 10:1e3d126a322b | 244 | uint32_t USBHAL::endpointReadcore(uint8_t endpoint, uint8_t *buffer) { |
| emilmont | 10:1e3d126a322b | 245 | // Read from an OUT endpoint |
| emilmont | 10:1e3d126a322b | 246 | uint32_t size; |
| emilmont | 10:1e3d126a322b | 247 | uint32_t i; |
| emilmont | 10:1e3d126a322b | 248 | uint32_t data = 0; |
| emilmont | 10:1e3d126a322b | 249 | uint8_t offset; |
| emilmont | 10:1e3d126a322b | 250 | |
| emilmont | 10:1e3d126a322b | 251 | LPC_USB->Ctrl = LOG_ENDPOINT(endpoint) | RD_EN; |
| emilmont | 10:1e3d126a322b | 252 | while (!(LPC_USB->RxPLen & PKT_RDY)); |
| emilmont | 10:1e3d126a322b | 253 | |
| emilmont | 10:1e3d126a322b | 254 | size = LPC_USB->RxPLen & PKT_LNGTH_MASK; |
| emilmont | 10:1e3d126a322b | 255 | |
| emilmont | 10:1e3d126a322b | 256 | offset = 0; |
| emilmont | 10:1e3d126a322b | 257 | |
| emilmont | 10:1e3d126a322b | 258 | if (size > 0) { |
| emilmont | 10:1e3d126a322b | 259 | for (i=0; i<size; i++) { |
| emilmont | 10:1e3d126a322b | 260 | if (offset==0) { |
| emilmont | 10:1e3d126a322b | 261 | // Fetch up to four bytes of data as a word |
| emilmont | 10:1e3d126a322b | 262 | data = LPC_USB->RxData; |
| emilmont | 10:1e3d126a322b | 263 | } |
| emilmont | 10:1e3d126a322b | 264 | |
| emilmont | 10:1e3d126a322b | 265 | // extract a byte |
| emilmont | 10:1e3d126a322b | 266 | *buffer = (data>>offset) & 0xff; |
| emilmont | 10:1e3d126a322b | 267 | buffer++; |
| emilmont | 10:1e3d126a322b | 268 | |
| emilmont | 10:1e3d126a322b | 269 | // move on to the next byte |
| emilmont | 10:1e3d126a322b | 270 | offset = (offset + 8) % 32; |
| emilmont | 10:1e3d126a322b | 271 | } |
| emilmont | 10:1e3d126a322b | 272 | } else { |
| emilmont | 10:1e3d126a322b | 273 | dummyRead = LPC_USB->RxData; |
| emilmont | 10:1e3d126a322b | 274 | } |
| emilmont | 10:1e3d126a322b | 275 | |
| emilmont | 10:1e3d126a322b | 276 | LPC_USB->Ctrl = 0; |
| emilmont | 10:1e3d126a322b | 277 | |
| emilmont | 10:1e3d126a322b | 278 | if ((endpoint >> 1) % 3 || (endpoint >> 1) == 0) { |
| emilmont | 10:1e3d126a322b | 279 | SIEselectEndpoint(endpoint); |
| emilmont | 10:1e3d126a322b | 280 | SIEclearBuffer(); |
| emilmont | 10:1e3d126a322b | 281 | } |
| emilmont | 10:1e3d126a322b | 282 | |
| emilmont | 10:1e3d126a322b | 283 | return size; |
| emilmont | 10:1e3d126a322b | 284 | } |
| emilmont | 10:1e3d126a322b | 285 | |
| emilmont | 10:1e3d126a322b | 286 | static void endpointWritecore(uint8_t endpoint, uint8_t *buffer, uint32_t size) { |
| emilmont | 10:1e3d126a322b | 287 | // Write to an IN endpoint |
| emilmont | 10:1e3d126a322b | 288 | uint32_t temp, data; |
| emilmont | 10:1e3d126a322b | 289 | uint8_t offset; |
| emilmont | 10:1e3d126a322b | 290 | |
| emilmont | 10:1e3d126a322b | 291 | LPC_USB->Ctrl = LOG_ENDPOINT(endpoint) | WR_EN; |
| emilmont | 10:1e3d126a322b | 292 | |
| emilmont | 10:1e3d126a322b | 293 | LPC_USB->TxPLen = size; |
| emilmont | 10:1e3d126a322b | 294 | offset = 0; |
| emilmont | 10:1e3d126a322b | 295 | data = 0; |
| emilmont | 10:1e3d126a322b | 296 | |
| emilmont | 10:1e3d126a322b | 297 | if (size>0) { |
| emilmont | 10:1e3d126a322b | 298 | do { |
| emilmont | 10:1e3d126a322b | 299 | // Fetch next data byte into a word-sized temporary variable |
| emilmont | 10:1e3d126a322b | 300 | temp = *buffer++; |
| emilmont | 10:1e3d126a322b | 301 | |
| emilmont | 10:1e3d126a322b | 302 | // Add to current data word |
| emilmont | 10:1e3d126a322b | 303 | temp = temp << offset; |
| emilmont | 10:1e3d126a322b | 304 | data = data | temp; |
| emilmont | 10:1e3d126a322b | 305 | |
| emilmont | 10:1e3d126a322b | 306 | // move on to the next byte |
| emilmont | 10:1e3d126a322b | 307 | offset = (offset + 8) % 32; |
| emilmont | 10:1e3d126a322b | 308 | size--; |
| emilmont | 10:1e3d126a322b | 309 | |
| emilmont | 10:1e3d126a322b | 310 | if ((offset==0) || (size==0)) { |
| emilmont | 10:1e3d126a322b | 311 | // Write the word to the endpoint |
| emilmont | 10:1e3d126a322b | 312 | LPC_USB->TxData = data; |
| emilmont | 10:1e3d126a322b | 313 | data = 0; |
| emilmont | 10:1e3d126a322b | 314 | } |
| emilmont | 10:1e3d126a322b | 315 | } while (size>0); |
| emilmont | 10:1e3d126a322b | 316 | } else { |
| emilmont | 10:1e3d126a322b | 317 | LPC_USB->TxData = 0; |
| emilmont | 10:1e3d126a322b | 318 | } |
| emilmont | 10:1e3d126a322b | 319 | |
| emilmont | 10:1e3d126a322b | 320 | // Clear WR_EN to cover zero length packet case |
| emilmont | 10:1e3d126a322b | 321 | LPC_USB->Ctrl=0; |
| emilmont | 10:1e3d126a322b | 322 | |
| emilmont | 10:1e3d126a322b | 323 | SIEselectEndpoint(endpoint); |
| emilmont | 10:1e3d126a322b | 324 | SIEvalidateBuffer(); |
| emilmont | 10:1e3d126a322b | 325 | } |
| emilmont | 10:1e3d126a322b | 326 | |
| emilmont | 10:1e3d126a322b | 327 | USBHAL::USBHAL(void) { |
| emilmont | 10:1e3d126a322b | 328 | // Disable IRQ |
| emilmont | 10:1e3d126a322b | 329 | NVIC_DisableIRQ(USB_IRQn); |
| emilmont | 10:1e3d126a322b | 330 | |
| emilmont | 10:1e3d126a322b | 331 | // fill in callback array |
| emilmont | 10:1e3d126a322b | 332 | epCallback[0] = &USBHAL::EP1_OUT_callback; |
| emilmont | 10:1e3d126a322b | 333 | epCallback[1] = &USBHAL::EP1_IN_callback; |
| emilmont | 10:1e3d126a322b | 334 | epCallback[2] = &USBHAL::EP2_OUT_callback; |
| emilmont | 10:1e3d126a322b | 335 | epCallback[3] = &USBHAL::EP2_IN_callback; |
| emilmont | 10:1e3d126a322b | 336 | epCallback[4] = &USBHAL::EP3_OUT_callback; |
| emilmont | 10:1e3d126a322b | 337 | epCallback[5] = &USBHAL::EP3_IN_callback; |
| emilmont | 10:1e3d126a322b | 338 | epCallback[6] = &USBHAL::EP4_OUT_callback; |
| emilmont | 10:1e3d126a322b | 339 | epCallback[7] = &USBHAL::EP4_IN_callback; |
| emilmont | 10:1e3d126a322b | 340 | epCallback[8] = &USBHAL::EP5_OUT_callback; |
| emilmont | 10:1e3d126a322b | 341 | epCallback[9] = &USBHAL::EP5_IN_callback; |
| emilmont | 10:1e3d126a322b | 342 | epCallback[10] = &USBHAL::EP6_OUT_callback; |
| emilmont | 10:1e3d126a322b | 343 | epCallback[11] = &USBHAL::EP6_IN_callback; |
| emilmont | 10:1e3d126a322b | 344 | epCallback[12] = &USBHAL::EP7_OUT_callback; |
| emilmont | 10:1e3d126a322b | 345 | epCallback[13] = &USBHAL::EP7_IN_callback; |
| emilmont | 10:1e3d126a322b | 346 | epCallback[14] = &USBHAL::EP8_OUT_callback; |
| emilmont | 10:1e3d126a322b | 347 | epCallback[15] = &USBHAL::EP8_IN_callback; |
| emilmont | 10:1e3d126a322b | 348 | epCallback[16] = &USBHAL::EP9_OUT_callback; |
| emilmont | 10:1e3d126a322b | 349 | epCallback[17] = &USBHAL::EP9_IN_callback; |
| emilmont | 10:1e3d126a322b | 350 | epCallback[18] = &USBHAL::EP10_OUT_callback; |
| emilmont | 10:1e3d126a322b | 351 | epCallback[19] = &USBHAL::EP10_IN_callback; |
| emilmont | 10:1e3d126a322b | 352 | epCallback[20] = &USBHAL::EP11_OUT_callback; |
| emilmont | 10:1e3d126a322b | 353 | epCallback[21] = &USBHAL::EP11_IN_callback; |
| emilmont | 10:1e3d126a322b | 354 | epCallback[22] = &USBHAL::EP12_OUT_callback; |
| emilmont | 10:1e3d126a322b | 355 | epCallback[23] = &USBHAL::EP12_IN_callback; |
| emilmont | 10:1e3d126a322b | 356 | epCallback[24] = &USBHAL::EP13_OUT_callback; |
| emilmont | 10:1e3d126a322b | 357 | epCallback[25] = &USBHAL::EP13_IN_callback; |
| emilmont | 10:1e3d126a322b | 358 | epCallback[26] = &USBHAL::EP14_OUT_callback; |
| emilmont | 10:1e3d126a322b | 359 | epCallback[27] = &USBHAL::EP14_IN_callback; |
| emilmont | 10:1e3d126a322b | 360 | epCallback[28] = &USBHAL::EP15_OUT_callback; |
| emilmont | 10:1e3d126a322b | 361 | epCallback[29] = &USBHAL::EP15_IN_callback; |
| emilmont | 10:1e3d126a322b | 362 | |
| emilmont | 10:1e3d126a322b | 363 | // Enable power to USB device controller |
| emilmont | 10:1e3d126a322b | 364 | LPC_SC->PCONP |= PCUSB; |
| emilmont | 10:1e3d126a322b | 365 | |
| emilmont | 10:1e3d126a322b | 366 | // Enable USB clocks |
| emilmont | 10:1e3d126a322b | 367 | LPC_USB->USBClkCtrl |= DEV_CLK_EN | AHB_CLK_EN; |
| emilmont | 10:1e3d126a322b | 368 | while ((LPC_USB->USBClkSt & (DEV_CLK_EN | AHB_CLK_EN)) != (DEV_CLK_ON | AHB_CLK_ON)); |
| emilmont | 10:1e3d126a322b | 369 | |
| emilmont | 10:1e3d126a322b | 370 | // Configure pins P0.29 and P0.30 to be USB D+ and USB D- |
| emilmont | 10:1e3d126a322b | 371 | LPC_IOCON->P0_29 &= ~0x07; |
| emilmont | 10:1e3d126a322b | 372 | LPC_IOCON->P0_29 |= 0x01; |
| emilmont | 10:1e3d126a322b | 373 | LPC_IOCON->P0_30 &= ~0x07; |
| emilmont | 10:1e3d126a322b | 374 | LPC_IOCON->P0_30 |= 0x01; |
| emilmont | 10:1e3d126a322b | 375 | |
| emilmont | 10:1e3d126a322b | 376 | // Disconnect USB device |
| emilmont | 10:1e3d126a322b | 377 | SIEdisconnect(); |
| emilmont | 10:1e3d126a322b | 378 | |
| emilmont | 10:1e3d126a322b | 379 | // Configure pin P2.9 to be Connect |
| emilmont | 10:1e3d126a322b | 380 | LPC_IOCON->P2_9 &= ~0x07; |
| emilmont | 10:1e3d126a322b | 381 | LPC_IOCON->P2_9 |= 0x01; |
| emilmont | 10:1e3d126a322b | 382 | |
| emilmont | 10:1e3d126a322b | 383 | // Connect must be low for at least 2.5uS |
| emilmont | 10:1e3d126a322b | 384 | wait(0.3); |
| emilmont | 10:1e3d126a322b | 385 | |
| emilmont | 10:1e3d126a322b | 386 | // Set the maximum packet size for the control endpoints |
| emilmont | 10:1e3d126a322b | 387 | realiseEndpoint(EP0IN, MAX_PACKET_SIZE_EP0, 0); |
| emilmont | 10:1e3d126a322b | 388 | realiseEndpoint(EP0OUT, MAX_PACKET_SIZE_EP0, 0); |
| emilmont | 10:1e3d126a322b | 389 | |
| emilmont | 10:1e3d126a322b | 390 | // Attach IRQ |
| emilmont | 10:1e3d126a322b | 391 | instance = this; |
| emilmont | 10:1e3d126a322b | 392 | NVIC_SetVector(USB_IRQn, (uint32_t)&_usbisr); |
| emilmont | 10:1e3d126a322b | 393 | |
| emilmont | 10:1e3d126a322b | 394 | // Enable interrupts for device events and EP0 |
| emilmont | 10:1e3d126a322b | 395 | LPC_USB->DevIntEn = EP_SLOW | DEV_STAT | FRAME; |
| emilmont | 10:1e3d126a322b | 396 | enableEndpointEvent(EP0IN); |
| emilmont | 10:1e3d126a322b | 397 | enableEndpointEvent(EP0OUT); |
| emilmont | 10:1e3d126a322b | 398 | } |
| emilmont | 10:1e3d126a322b | 399 | |
| emilmont | 10:1e3d126a322b | 400 | USBHAL::~USBHAL(void) { |
| emilmont | 10:1e3d126a322b | 401 | // Ensure device disconnected |
| emilmont | 10:1e3d126a322b | 402 | SIEdisconnect(); |
| emilmont | 10:1e3d126a322b | 403 | // Disable USB interrupts |
| emilmont | 10:1e3d126a322b | 404 | NVIC_DisableIRQ(USB_IRQn); |
| emilmont | 10:1e3d126a322b | 405 | } |
| emilmont | 10:1e3d126a322b | 406 | |
| emilmont | 10:1e3d126a322b | 407 | void USBHAL::connect(void) { |
| emilmont | 10:1e3d126a322b | 408 | NVIC_EnableIRQ(USB_IRQn); |
| emilmont | 10:1e3d126a322b | 409 | // Connect USB device |
| emilmont | 10:1e3d126a322b | 410 | SIEconnect(); |
| emilmont | 10:1e3d126a322b | 411 | } |
| emilmont | 10:1e3d126a322b | 412 | |
| emilmont | 10:1e3d126a322b | 413 | void USBHAL::disconnect(void) { |
| emilmont | 10:1e3d126a322b | 414 | NVIC_DisableIRQ(USB_IRQn); |
| emilmont | 10:1e3d126a322b | 415 | // Disconnect USB device |
| emilmont | 10:1e3d126a322b | 416 | SIEdisconnect(); |
| emilmont | 10:1e3d126a322b | 417 | } |
| emilmont | 10:1e3d126a322b | 418 | |
| emilmont | 10:1e3d126a322b | 419 | void USBHAL::configureDevice(void) { |
| emilmont | 10:1e3d126a322b | 420 | SIEconfigureDevice(); |
| emilmont | 10:1e3d126a322b | 421 | } |
| emilmont | 10:1e3d126a322b | 422 | |
| emilmont | 10:1e3d126a322b | 423 | void USBHAL::unconfigureDevice(void) { |
| emilmont | 10:1e3d126a322b | 424 | SIEunconfigureDevice(); |
| emilmont | 10:1e3d126a322b | 425 | } |
| emilmont | 10:1e3d126a322b | 426 | |
| emilmont | 10:1e3d126a322b | 427 | void USBHAL::setAddress(uint8_t address) { |
| emilmont | 10:1e3d126a322b | 428 | SIEsetAddress(address); |
| emilmont | 10:1e3d126a322b | 429 | } |
| emilmont | 10:1e3d126a322b | 430 | |
| emilmont | 10:1e3d126a322b | 431 | void USBHAL::EP0setup(uint8_t *buffer) { |
| emilmont | 10:1e3d126a322b | 432 | endpointReadcore(EP0OUT, buffer); |
| emilmont | 10:1e3d126a322b | 433 | } |
| emilmont | 10:1e3d126a322b | 434 | |
| emilmont | 10:1e3d126a322b | 435 | void USBHAL::EP0read(void) { |
| emilmont | 10:1e3d126a322b | 436 | // Not required |
| emilmont | 10:1e3d126a322b | 437 | } |
| emilmont | 10:1e3d126a322b | 438 | |
| emilmont | 10:1e3d126a322b | 439 | void USBHAL::EP0readStage(void) { |
| emilmont | 10:1e3d126a322b | 440 | // Not required |
| emilmont | 10:1e3d126a322b | 441 | } |
| emilmont | 10:1e3d126a322b | 442 | |
| emilmont | 10:1e3d126a322b | 443 | uint32_t USBHAL::EP0getReadResult(uint8_t *buffer) { |
| emilmont | 10:1e3d126a322b | 444 | return endpointReadcore(EP0OUT, buffer); |
| emilmont | 10:1e3d126a322b | 445 | } |
| emilmont | 10:1e3d126a322b | 446 | |
| emilmont | 10:1e3d126a322b | 447 | void USBHAL::EP0write(uint8_t *buffer, uint32_t size) { |
| emilmont | 10:1e3d126a322b | 448 | endpointWritecore(EP0IN, buffer, size); |
| emilmont | 10:1e3d126a322b | 449 | } |
| emilmont | 10:1e3d126a322b | 450 | |
| emilmont | 10:1e3d126a322b | 451 | void USBHAL::EP0getWriteResult(void) { |
| emilmont | 10:1e3d126a322b | 452 | // Not required |
| emilmont | 10:1e3d126a322b | 453 | } |
| emilmont | 10:1e3d126a322b | 454 | |
| emilmont | 10:1e3d126a322b | 455 | void USBHAL::EP0stall(void) { |
| emilmont | 10:1e3d126a322b | 456 | // This will stall both control endpoints |
| emilmont | 10:1e3d126a322b | 457 | stallEndpoint(EP0OUT); |
| emilmont | 10:1e3d126a322b | 458 | } |
| emilmont | 10:1e3d126a322b | 459 | |
| emilmont | 10:1e3d126a322b | 460 | EP_STATUS USBHAL::endpointRead(uint8_t endpoint, uint32_t maximumSize) { |
| emilmont | 10:1e3d126a322b | 461 | return EP_PENDING; |
| emilmont | 10:1e3d126a322b | 462 | } |
| emilmont | 10:1e3d126a322b | 463 | |
| emilmont | 10:1e3d126a322b | 464 | EP_STATUS USBHAL::endpointReadResult(uint8_t endpoint, uint8_t * buffer, uint32_t *bytesRead) { |
| emilmont | 10:1e3d126a322b | 465 | |
| emilmont | 10:1e3d126a322b | 466 | //for isochronous endpoint, we don't wait an interrupt |
| emilmont | 10:1e3d126a322b | 467 | if ((endpoint >> 1) % 3 || (endpoint >> 1) == 0) { |
| emilmont | 10:1e3d126a322b | 468 | if (!(epComplete & EP(endpoint))) |
| emilmont | 10:1e3d126a322b | 469 | return EP_PENDING; |
| emilmont | 10:1e3d126a322b | 470 | } |
| emilmont | 10:1e3d126a322b | 471 | |
| emilmont | 10:1e3d126a322b | 472 | *bytesRead = endpointReadcore(endpoint, buffer); |
| emilmont | 10:1e3d126a322b | 473 | epComplete &= ~EP(endpoint); |
| emilmont | 10:1e3d126a322b | 474 | return EP_COMPLETED; |
| emilmont | 10:1e3d126a322b | 475 | } |
| emilmont | 10:1e3d126a322b | 476 | |
| emilmont | 10:1e3d126a322b | 477 | EP_STATUS USBHAL::endpointWrite(uint8_t endpoint, uint8_t *data, uint32_t size) { |
| emilmont | 10:1e3d126a322b | 478 | if (getEndpointStallState(endpoint)) { |
| emilmont | 10:1e3d126a322b | 479 | return EP_STALLED; |
| emilmont | 10:1e3d126a322b | 480 | } |
| emilmont | 10:1e3d126a322b | 481 | |
| emilmont | 10:1e3d126a322b | 482 | epComplete &= ~EP(endpoint); |
| emilmont | 10:1e3d126a322b | 483 | |
| emilmont | 10:1e3d126a322b | 484 | endpointWritecore(endpoint, data, size); |
| emilmont | 10:1e3d126a322b | 485 | return EP_PENDING; |
| emilmont | 10:1e3d126a322b | 486 | } |
| emilmont | 10:1e3d126a322b | 487 | |
| emilmont | 10:1e3d126a322b | 488 | EP_STATUS USBHAL::endpointWriteResult(uint8_t endpoint) { |
| emilmont | 10:1e3d126a322b | 489 | if (epComplete & EP(endpoint)) { |
| emilmont | 10:1e3d126a322b | 490 | epComplete &= ~EP(endpoint); |
| emilmont | 10:1e3d126a322b | 491 | return EP_COMPLETED; |
| emilmont | 10:1e3d126a322b | 492 | } |
| emilmont | 10:1e3d126a322b | 493 | |
| emilmont | 10:1e3d126a322b | 494 | return EP_PENDING; |
| emilmont | 10:1e3d126a322b | 495 | } |
| emilmont | 10:1e3d126a322b | 496 | |
| emilmont | 10:1e3d126a322b | 497 | bool USBHAL::realiseEndpoint(uint8_t endpoint, uint32_t maxPacket, uint32_t flags) { |
| emilmont | 10:1e3d126a322b | 498 | // Realise an endpoint |
| emilmont | 10:1e3d126a322b | 499 | LPC_USB->DevIntClr = EP_RLZED; |
| emilmont | 10:1e3d126a322b | 500 | LPC_USB->ReEp |= EP(endpoint); |
| emilmont | 10:1e3d126a322b | 501 | LPC_USB->EpInd = endpoint; |
| emilmont | 10:1e3d126a322b | 502 | LPC_USB->MaxPSize = maxPacket; |
| emilmont | 10:1e3d126a322b | 503 | |
| emilmont | 10:1e3d126a322b | 504 | while (!(LPC_USB->DevIntSt & EP_RLZED)); |
| emilmont | 10:1e3d126a322b | 505 | LPC_USB->DevIntClr = EP_RLZED; |
| emilmont | 10:1e3d126a322b | 506 | |
| emilmont | 10:1e3d126a322b | 507 | // Clear stall state |
| emilmont | 10:1e3d126a322b | 508 | endpointStallState &= ~EP(endpoint); |
| emilmont | 10:1e3d126a322b | 509 | |
| emilmont | 10:1e3d126a322b | 510 | enableEndpointEvent(endpoint); |
| emilmont | 10:1e3d126a322b | 511 | return true; |
| emilmont | 10:1e3d126a322b | 512 | } |
| emilmont | 10:1e3d126a322b | 513 | |
| emilmont | 10:1e3d126a322b | 514 | void USBHAL::stallEndpoint(uint8_t endpoint) { |
| emilmont | 10:1e3d126a322b | 515 | // Stall an endpoint |
| emilmont | 10:1e3d126a322b | 516 | if ( (endpoint==EP0IN) || (endpoint==EP0OUT) ) { |
| emilmont | 10:1e3d126a322b | 517 | // Conditionally stall both control endpoints |
| emilmont | 10:1e3d126a322b | 518 | SIEsetEndpointStatus(EP0OUT, SIE_SES_CND_ST); |
| emilmont | 10:1e3d126a322b | 519 | } else { |
| emilmont | 10:1e3d126a322b | 520 | SIEsetEndpointStatus(endpoint, SIE_SES_ST); |
| emilmont | 10:1e3d126a322b | 521 | |
| emilmont | 10:1e3d126a322b | 522 | // Update stall state |
| emilmont | 10:1e3d126a322b | 523 | endpointStallState |= EP(endpoint); |
| emilmont | 10:1e3d126a322b | 524 | } |
| emilmont | 10:1e3d126a322b | 525 | } |
| emilmont | 10:1e3d126a322b | 526 | |
| emilmont | 10:1e3d126a322b | 527 | void USBHAL::unstallEndpoint(uint8_t endpoint) { |
| emilmont | 10:1e3d126a322b | 528 | // Unstall an endpoint. The endpoint will also be reinitialised |
| emilmont | 10:1e3d126a322b | 529 | SIEsetEndpointStatus(endpoint, 0); |
| emilmont | 10:1e3d126a322b | 530 | |
| emilmont | 10:1e3d126a322b | 531 | // Update stall state |
| emilmont | 10:1e3d126a322b | 532 | endpointStallState &= ~EP(endpoint); |
| emilmont | 10:1e3d126a322b | 533 | } |
| emilmont | 10:1e3d126a322b | 534 | |
| emilmont | 10:1e3d126a322b | 535 | bool USBHAL::getEndpointStallState(uint8_t endpoint) { |
| emilmont | 10:1e3d126a322b | 536 | // Returns true if endpoint stalled |
| emilmont | 10:1e3d126a322b | 537 | return endpointStallState & EP(endpoint); |
| emilmont | 10:1e3d126a322b | 538 | } |
| emilmont | 10:1e3d126a322b | 539 | |
| emilmont | 10:1e3d126a322b | 540 | void USBHAL::remoteWakeup(void) { |
| emilmont | 10:1e3d126a322b | 541 | // Remote wakeup |
| emilmont | 10:1e3d126a322b | 542 | uint8_t status; |
| emilmont | 10:1e3d126a322b | 543 | |
| emilmont | 10:1e3d126a322b | 544 | // Enable USB clocks |
| emilmont | 10:1e3d126a322b | 545 | LPC_USB->USBClkCtrl |= DEV_CLK_EN | AHB_CLK_EN; |
| emilmont | 10:1e3d126a322b | 546 | while (LPC_USB->USBClkSt != (DEV_CLK_ON | AHB_CLK_ON)); |
| emilmont | 10:1e3d126a322b | 547 | |
| emilmont | 10:1e3d126a322b | 548 | status = SIEgetDeviceStatus(); |
| emilmont | 10:1e3d126a322b | 549 | SIEsetDeviceStatus(status & ~SIE_DS_SUS); |
| emilmont | 10:1e3d126a322b | 550 | } |
| emilmont | 10:1e3d126a322b | 551 | |
| emilmont | 10:1e3d126a322b | 552 | void USBHAL::_usbisr(void) { |
| emilmont | 10:1e3d126a322b | 553 | instance->usbisr(); |
| emilmont | 10:1e3d126a322b | 554 | } |
| emilmont | 10:1e3d126a322b | 555 | |
| emilmont | 10:1e3d126a322b | 556 | |
| emilmont | 10:1e3d126a322b | 557 | void USBHAL::usbisr(void) { |
| emilmont | 10:1e3d126a322b | 558 | uint8_t devStat; |
| emilmont | 10:1e3d126a322b | 559 | |
| emilmont | 10:1e3d126a322b | 560 | if (LPC_USB->DevIntSt & FRAME) { |
| emilmont | 10:1e3d126a322b | 561 | // Start of frame event |
| emilmont | 10:1e3d126a322b | 562 | SOF(SIEgetFrameNumber()); |
| emilmont | 10:1e3d126a322b | 563 | // Clear interrupt status flag |
| emilmont | 10:1e3d126a322b | 564 | LPC_USB->DevIntClr = FRAME; |
| emilmont | 10:1e3d126a322b | 565 | } |
| emilmont | 10:1e3d126a322b | 566 | |
| emilmont | 10:1e3d126a322b | 567 | if (LPC_USB->DevIntSt & DEV_STAT) { |
| emilmont | 10:1e3d126a322b | 568 | // Device Status interrupt |
| emilmont | 10:1e3d126a322b | 569 | // Must clear the interrupt status flag before reading the device status from the SIE |
| emilmont | 10:1e3d126a322b | 570 | LPC_USB->DevIntClr = DEV_STAT; |
| emilmont | 10:1e3d126a322b | 571 | |
| emilmont | 10:1e3d126a322b | 572 | // Read device status from SIE |
| emilmont | 10:1e3d126a322b | 573 | devStat = SIEgetDeviceStatus(); |
| emilmont | 10:1e3d126a322b | 574 | //printf("devStat: %d\r\n", devStat); |
| emilmont | 10:1e3d126a322b | 575 | |
| emilmont | 10:1e3d126a322b | 576 | if (devStat & SIE_DS_SUS_CH) { |
| emilmont | 10:1e3d126a322b | 577 | // Suspend status changed |
| emilmont | 10:1e3d126a322b | 578 | if((devStat & SIE_DS_SUS) != 0) { |
| emilmont | 10:1e3d126a322b | 579 | suspendStateChanged(0); |
| emilmont | 10:1e3d126a322b | 580 | } |
| emilmont | 10:1e3d126a322b | 581 | } |
| emilmont | 10:1e3d126a322b | 582 | |
| emilmont | 10:1e3d126a322b | 583 | if (devStat & SIE_DS_RST) { |
| emilmont | 10:1e3d126a322b | 584 | // Bus reset |
| emilmont | 10:1e3d126a322b | 585 | if((devStat & SIE_DS_SUS) == 0) { |
| emilmont | 10:1e3d126a322b | 586 | suspendStateChanged(1); |
| emilmont | 10:1e3d126a322b | 587 | } |
| emilmont | 10:1e3d126a322b | 588 | busReset(); |
| emilmont | 10:1e3d126a322b | 589 | } |
| emilmont | 10:1e3d126a322b | 590 | } |
| emilmont | 10:1e3d126a322b | 591 | |
| emilmont | 10:1e3d126a322b | 592 | if (LPC_USB->DevIntSt & EP_SLOW) { |
| emilmont | 10:1e3d126a322b | 593 | // (Slow) Endpoint Interrupt |
| emilmont | 10:1e3d126a322b | 594 | |
| emilmont | 10:1e3d126a322b | 595 | // Process each endpoint interrupt |
| emilmont | 10:1e3d126a322b | 596 | if (LPC_USB->EpIntSt & EP(EP0OUT)) { |
| emilmont | 10:1e3d126a322b | 597 | if (selectEndpointClearInterrupt(EP0OUT) & SIE_SE_STP) { |
| emilmont | 10:1e3d126a322b | 598 | // this is a setup packet |
| emilmont | 10:1e3d126a322b | 599 | EP0setupCallback(); |
| emilmont | 10:1e3d126a322b | 600 | } else { |
| emilmont | 10:1e3d126a322b | 601 | EP0out(); |
| emilmont | 10:1e3d126a322b | 602 | } |
| emilmont | 10:1e3d126a322b | 603 | LPC_USB->DevIntClr = EP_SLOW; |
| emilmont | 10:1e3d126a322b | 604 | } |
| emilmont | 10:1e3d126a322b | 605 | |
| emilmont | 10:1e3d126a322b | 606 | if (LPC_USB->EpIntSt & EP(EP0IN)) { |
| emilmont | 10:1e3d126a322b | 607 | selectEndpointClearInterrupt(EP0IN); |
| emilmont | 10:1e3d126a322b | 608 | LPC_USB->DevIntClr = EP_SLOW; |
| emilmont | 10:1e3d126a322b | 609 | EP0in(); |
| emilmont | 10:1e3d126a322b | 610 | } |
| emilmont | 10:1e3d126a322b | 611 | |
| emilmont | 10:1e3d126a322b | 612 | for (uint8_t num = 2; num < 16*2; num++) { |
| emilmont | 10:1e3d126a322b | 613 | if (LPC_USB->EpIntSt & EP(num)) { |
| emilmont | 10:1e3d126a322b | 614 | selectEndpointClearInterrupt(num); |
| emilmont | 10:1e3d126a322b | 615 | epComplete |= EP(num); |
| emilmont | 10:1e3d126a322b | 616 | LPC_USB->DevIntClr = EP_SLOW; |
| emilmont | 10:1e3d126a322b | 617 | if ((instance->*(epCallback[num - 2]))()) { |
| emilmont | 10:1e3d126a322b | 618 | epComplete &= ~EP(num); |
| emilmont | 10:1e3d126a322b | 619 | } |
| emilmont | 10:1e3d126a322b | 620 | } |
| emilmont | 10:1e3d126a322b | 621 | } |
| emilmont | 10:1e3d126a322b | 622 | } |
| emilmont | 10:1e3d126a322b | 623 | } |
| emilmont | 10:1e3d126a322b | 624 | |
| emilmont | 10:1e3d126a322b | 625 | #endif |