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| 1 | +/* |
| 2 | + * The MIT License (MIT) |
| 3 | + * |
| 4 | + * Copyright (c) 2023 Ha Thach ([email protected]) for Adafruit Industries |
| 5 | + * |
| 6 | + * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 7 | + * of this software and associated documentation files (the "Software"), to deal |
| 8 | + * in the Software without restriction, including without limitation the rights |
| 9 | + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 10 | + * copies of the Software, and to permit persons to whom the Software is |
| 11 | + * furnished to do so, subject to the following conditions: |
| 12 | + * |
| 13 | + * The above copyright notice and this permission notice shall be included in |
| 14 | + * all copies or substantial portions of the Software. |
| 15 | + * |
| 16 | + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 17 | + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 18 | + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| 19 | + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 20 | + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 21 | + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| 22 | + * THE SOFTWARE. |
| 23 | + */ |
| 24 | + |
| 25 | +#ifndef TUSB_FTDI_SIO_H |
| 26 | +#define TUSB_FTDI_SIO_H |
| 27 | + |
| 28 | +// VID/PID for matching FTDI devices |
| 29 | +#define TU_FTDI_VID 0x0403 |
| 30 | +#define TU_FTDI_PID_LIST \ |
| 31 | + 0x6001, 0x6006, 0x6010, 0x6011, 0x6014, 0x6015, 0x8372, 0xFBFA, \ |
| 32 | + 0xcd18 |
| 33 | + |
| 34 | +// Commands |
| 35 | +#define FTDI_SIO_RESET 0 /* Reset the port */ |
| 36 | +#define FTDI_SIO_MODEM_CTRL 1 /* Set the modem control register */ |
| 37 | +#define FTDI_SIO_SET_FLOW_CTRL 2 /* Set flow control register */ |
| 38 | +#define FTDI_SIO_SET_BAUD_RATE 3 /* Set baud rate */ |
| 39 | +#define FTDI_SIO_SET_DATA 4 /* Set the data characteristics of the port */ |
| 40 | +#define FTDI_SIO_GET_MODEM_STATUS 5 /* Retrieve current value of modem status register */ |
| 41 | +#define FTDI_SIO_SET_EVENT_CHAR 6 /* Set the event character */ |
| 42 | +#define FTDI_SIO_SET_ERROR_CHAR 7 /* Set the error character */ |
| 43 | +#define FTDI_SIO_SET_LATENCY_TIMER 9 /* Set the latency timer */ |
| 44 | +#define FTDI_SIO_GET_LATENCY_TIMER 0x0a /* Get the latency timer */ |
| 45 | +#define FTDI_SIO_SET_BITMODE 0x0b /* Set bitbang mode */ |
| 46 | +#define FTDI_SIO_READ_PINS 0x0c /* Read immediate value of pins */ |
| 47 | +#define FTDI_SIO_READ_EEPROM 0x90 /* Read EEPROM */ |
| 48 | + |
| 49 | +/* FTDI_SIO_RESET */ |
| 50 | +#define FTDI_SIO_RESET_SIO 0 |
| 51 | +#define FTDI_SIO_RESET_PURGE_RX 1 |
| 52 | +#define FTDI_SIO_RESET_PURGE_TX 2 |
| 53 | + |
| 54 | +/* |
| 55 | + * BmRequestType: 0100 0000B |
| 56 | + * bRequest: FTDI_SIO_RESET |
| 57 | + * wValue: Control Value |
| 58 | + * 0 = Reset SIO |
| 59 | + * 1 = Purge RX buffer |
| 60 | + * 2 = Purge TX buffer |
| 61 | + * wIndex: Port |
| 62 | + * wLength: 0 |
| 63 | + * Data: None |
| 64 | + * |
| 65 | + * The Reset SIO command has this effect: |
| 66 | + * |
| 67 | + * Sets flow control set to 'none' |
| 68 | + * Event char = $0D |
| 69 | + * Event trigger = disabled |
| 70 | + * Purge RX buffer |
| 71 | + * Purge TX buffer |
| 72 | + * Clear DTR |
| 73 | + * Clear RTS |
| 74 | + * baud and data format not reset |
| 75 | + * |
| 76 | + * The Purge RX and TX buffer commands affect nothing except the buffers |
| 77 | + * |
| 78 | + */ |
| 79 | + |
| 80 | +/* FTDI_SIO_MODEM_CTRL */ |
| 81 | +/* |
| 82 | + * BmRequestType: 0100 0000B |
| 83 | + * bRequest: FTDI_SIO_MODEM_CTRL |
| 84 | + * wValue: ControlValue (see below) |
| 85 | + * wIndex: Port |
| 86 | + * wLength: 0 |
| 87 | + * Data: None |
| 88 | + * |
| 89 | + * NOTE: If the device is in RTS/CTS flow control, the RTS set by this |
| 90 | + * command will be IGNORED without an error being returned |
| 91 | + * Also - you can not set DTR and RTS with one control message |
| 92 | + */ |
| 93 | + |
| 94 | +#define FTDI_SIO_SET_DTR_MASK 0x1 |
| 95 | +#define FTDI_SIO_SET_DTR_HIGH ((FTDI_SIO_SET_DTR_MASK << 8) | 1) |
| 96 | +#define FTDI_SIO_SET_DTR_LOW ((FTDI_SIO_SET_DTR_MASK << 8) | 0) |
| 97 | +#define FTDI_SIO_SET_RTS_MASK 0x2 |
| 98 | +#define FTDI_SIO_SET_RTS_HIGH ((FTDI_SIO_SET_RTS_MASK << 8) | 2) |
| 99 | +#define FTDI_SIO_SET_RTS_LOW ((FTDI_SIO_SET_RTS_MASK << 8) | 0) |
| 100 | + |
| 101 | +/* |
| 102 | + * ControlValue |
| 103 | + * B0 DTR state |
| 104 | + * 0 = reset |
| 105 | + * 1 = set |
| 106 | + * B1 RTS state |
| 107 | + * 0 = reset |
| 108 | + * 1 = set |
| 109 | + * B2..7 Reserved |
| 110 | + * B8 DTR state enable |
| 111 | + * 0 = ignore |
| 112 | + * 1 = use DTR state |
| 113 | + * B9 RTS state enable |
| 114 | + * 0 = ignore |
| 115 | + * 1 = use RTS state |
| 116 | + * B10..15 Reserved |
| 117 | + */ |
| 118 | + |
| 119 | +/* FTDI_SIO_SET_FLOW_CTRL */ |
| 120 | +#define FTDI_SIO_DISABLE_FLOW_CTRL 0x0 |
| 121 | +#define FTDI_SIO_RTS_CTS_HS (0x1 << 8) |
| 122 | +#define FTDI_SIO_DTR_DSR_HS (0x2 << 8) |
| 123 | +#define FTDI_SIO_XON_XOFF_HS (0x4 << 8) |
| 124 | + |
| 125 | +/* |
| 126 | + * BmRequestType: 0100 0000b |
| 127 | + * bRequest: FTDI_SIO_SET_FLOW_CTRL |
| 128 | + * wValue: Xoff/Xon |
| 129 | + * wIndex: Protocol/Port - hIndex is protocol / lIndex is port |
| 130 | + * wLength: 0 |
| 131 | + * Data: None |
| 132 | + * |
| 133 | + * hIndex protocol is: |
| 134 | + * B0 Output handshaking using RTS/CTS |
| 135 | + * 0 = disabled |
| 136 | + * 1 = enabled |
| 137 | + * B1 Output handshaking using DTR/DSR |
| 138 | + * 0 = disabled |
| 139 | + * 1 = enabled |
| 140 | + * B2 Xon/Xoff handshaking |
| 141 | + * 0 = disabled |
| 142 | + * 1 = enabled |
| 143 | + * |
| 144 | + * A value of zero in the hIndex field disables handshaking |
| 145 | + * |
| 146 | + * If Xon/Xoff handshaking is specified, the hValue field should contain the |
| 147 | + * XOFF character and the lValue field contains the XON character. |
| 148 | + */ |
| 149 | + |
| 150 | +/* FTDI_SIO_SET_BAUD_RATE */ |
| 151 | +/* |
| 152 | + * BmRequestType: 0100 0000B |
| 153 | + * bRequest: FTDI_SIO_SET_BAUDRATE |
| 154 | + * wValue: BaudDivisor value - see below |
| 155 | + * wIndex: Port |
| 156 | + * wLength: 0 |
| 157 | + * Data: None |
| 158 | + * The BaudDivisor values are calculated as follows (too complicated): |
| 159 | + */ |
| 160 | + |
| 161 | +/* FTDI_SIO_SET_DATA */ |
| 162 | +#define FTDI_SIO_SET_DATA_PARITY_NONE (0x0 << 8) |
| 163 | +#define FTDI_SIO_SET_DATA_PARITY_ODD (0x1 << 8) |
| 164 | +#define FTDI_SIO_SET_DATA_PARITY_EVEN (0x2 << 8) |
| 165 | +#define FTDI_SIO_SET_DATA_PARITY_MARK (0x3 << 8) |
| 166 | +#define FTDI_SIO_SET_DATA_PARITY_SPACE (0x4 << 8) |
| 167 | +#define FTDI_SIO_SET_DATA_STOP_BITS_1 (0x0 << 11) |
| 168 | +#define FTDI_SIO_SET_DATA_STOP_BITS_15 (0x1 << 11) |
| 169 | +#define FTDI_SIO_SET_DATA_STOP_BITS_2 (0x2 << 11) |
| 170 | +#define FTDI_SIO_SET_BREAK (0x1 << 14) |
| 171 | + |
| 172 | +/* |
| 173 | + * BmRequestType: 0100 0000B |
| 174 | + * bRequest: FTDI_SIO_SET_DATA |
| 175 | + * wValue: Data characteristics (see below) |
| 176 | + * wIndex: Port |
| 177 | + * wLength: 0 |
| 178 | + * Data: No |
| 179 | + * |
| 180 | + * Data characteristics |
| 181 | + * |
| 182 | + * B0..7 Number of data bits |
| 183 | + * B8..10 Parity |
| 184 | + * 0 = None |
| 185 | + * 1 = Odd |
| 186 | + * 2 = Even |
| 187 | + * 3 = Mark |
| 188 | + * 4 = Space |
| 189 | + * B11..13 Stop Bits |
| 190 | + * 0 = 1 |
| 191 | + * 1 = 1.5 |
| 192 | + * 2 = 2 |
| 193 | + * B14 |
| 194 | + * 1 = TX ON (break) |
| 195 | + * 0 = TX OFF (normal state) |
| 196 | + * B15 Reserved |
| 197 | + * |
| 198 | + */ |
| 199 | + |
| 200 | +/* |
| 201 | +* DATA FORMAT |
| 202 | +* |
| 203 | +* IN Endpoint |
| 204 | +* |
| 205 | +* The device reserves the first two bytes of data on this endpoint to contain |
| 206 | +* the current values of the modem and line status registers. In the absence of |
| 207 | +* data, the device generates a message consisting of these two status bytes |
| 208 | + * every 40 ms |
| 209 | + * |
| 210 | + * Byte 0: Modem Status |
| 211 | +* |
| 212 | +* Offset Description |
| 213 | +* B0 Reserved - must be 1 |
| 214 | +* B1 Reserved - must be 0 |
| 215 | +* B2 Reserved - must be 0 |
| 216 | +* B3 Reserved - must be 0 |
| 217 | +* B4 Clear to Send (CTS) |
| 218 | +* B5 Data Set Ready (DSR) |
| 219 | +* B6 Ring Indicator (RI) |
| 220 | +* B7 Receive Line Signal Detect (RLSD) |
| 221 | +* |
| 222 | +* Byte 1: Line Status |
| 223 | +* |
| 224 | +* Offset Description |
| 225 | +* B0 Data Ready (DR) |
| 226 | +* B1 Overrun Error (OE) |
| 227 | +* B2 Parity Error (PE) |
| 228 | +* B3 Framing Error (FE) |
| 229 | +* B4 Break Interrupt (BI) |
| 230 | +* B5 Transmitter Holding Register (THRE) |
| 231 | +* B6 Transmitter Empty (TEMT) |
| 232 | +* B7 Error in RCVR FIFO |
| 233 | +* |
| 234 | +*/ |
| 235 | +#define FTDI_RS0_CTS (1 << 4) |
| 236 | +#define FTDI_RS0_DSR (1 << 5) |
| 237 | +#define FTDI_RS0_RI (1 << 6) |
| 238 | +#define FTDI_RS0_RLSD (1 << 7) |
| 239 | + |
| 240 | +#define FTDI_RS_DR 1 |
| 241 | +#define FTDI_RS_OE (1<<1) |
| 242 | +#define FTDI_RS_PE (1<<2) |
| 243 | +#define FTDI_RS_FE (1<<3) |
| 244 | +#define FTDI_RS_BI (1<<4) |
| 245 | +#define FTDI_RS_THRE (1<<5) |
| 246 | +#define FTDI_RS_TEMT (1<<6) |
| 247 | +#define FTDI_RS_FIFO (1<<7) |
| 248 | + |
| 249 | +#endif //TUSB_FTDI_SIO_H |
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