2 Copyright 2018 Massdrop Inc.
4 This program is free software: you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation, either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <http://www.gnu.org/licenses/>.
18 #include "arm_atsam_protocol.h"
21 Usb2422 USB2422_shadow;
22 unsigned char i2c0_buf[34];
24 const uint16_t MFRNAME[] = { 'M','a','s','s','d','r','o','p',' ','I','n','c','.' }; //Massdrop Inc.
25 const uint16_t PRDNAME[] = { 'M','a','s','s','d','r','o','p',' ','H','u','b' }; //Massdrop Hub
27 //Serial number reported stops before first found space character or at last found character
28 const uint16_t SERNAME[] = { 'U','n','a','v','a','i','l','a','b','l','e' }; //Unavailable
30 //In production, this field is found, modified, and offset noted as the last 32-bit word in the bootloader space
31 //The offset allows the application to use the factory programmed serial (which may differ from the physical serial label)
32 //Serial number reported stops before first found space character or when max size is reached
33 __attribute__((__aligned__(4)))
34 const uint16_t SERNAME[BOOTLOADER_SERIAL_MAX_SIZE] = { 'M','D','H','U','B','B','O','O','T','L','0','0','0','0','0','0','0','0','0','0' };
35 //NOTE: Serial replacer will not write a string longer than given here as a precaution, so give enough
36 // space as needed and adjust BOOTLOADER_SERIAL_MAX_SIZE to match amount given
37 #endif //MD_BOOTLOADER
39 uint8_t usb_host_port;
43 uint8_t usb_extra_state;
44 uint8_t usb_extra_manual;
47 #endif //MD_BOOTLOADER
51 void USB_write2422_block(void)
53 unsigned char *dest = i2c0_buf;
55 unsigned char *base = (unsigned char *)&USB2422_shadow;
57 DBGC(DC_USB_WRITE2422_BLOCK_BEGIN);
59 for (src = base; src < base + 256; src += 32)
63 memcpy(&dest[2], src, 32);
64 i2c0_transmit(USB2422_ADDR, dest, 34, 50000);
65 SERCOM0->I2CM.CTRLB.bit.CMD = 0x03;
66 while (SERCOM0->I2CM.SYNCBUSY.bit.SYSOP) { DBGC(DC_USB_WRITE2422_BLOCK_SYNC_SYSOP); }
70 DBGC(DC_USB_WRITE2422_BLOCK_COMPLETE);
73 void USB2422_init(void)
78 Oscctrl *posc = OSCCTRL;
80 Srdata_t *pspi = &srdata;
82 DBGC(DC_USB2422_INIT_BEGIN);
84 while ((v_5v = adc_get(ADC_5V)) < ADC_5V_START_LEVEL) { DBGC(DC_USB2422_INIT_WAIT_5V_LOW); }
86 //setup peripheral and synchronous bus clocks to USB
87 pgclk->PCHCTRL[10].bit.GEN = 0;
88 pgclk->PCHCTRL[10].bit.CHEN = 1;
89 pmclk->AHBMASK.bit.USB_ = 1;
90 pmclk->APBBMASK.bit.USB_ = 1;
92 //setup port pins for D-, D+, and SOF_1KHZ
93 pport->Group[0].PMUX[12].reg = 0x77; //PA24, PA25, function column H for USB D-, D+
94 pport->Group[0].PINCFG[24].bit.PMUXEN = 1;
95 pport->Group[0].PINCFG[25].bit.PMUXEN = 1;
96 pport->Group[1].PMUX[11].bit.PMUXE = 7; //PB22, function column H for USB SOF_1KHz output
97 pport->Group[1].PINCFG[22].bit.PMUXEN = 1;
99 //configure and enable DFLL for USB clock recovery mode at 48MHz
100 posc->DFLLCTRLA.bit.ENABLE = 0;
101 while (posc->DFLLSYNC.bit.ENABLE) { DBGC(DC_USB2422_INIT_OSC_SYNC_DISABLING); }
102 while (posc->DFLLSYNC.bit.DFLLCTRLB) { DBGC(DC_USB2422_INIT_OSC_SYNC_DFLLCTRLB_1); }
103 posc->DFLLCTRLB.bit.USBCRM = 1;
104 while (posc->DFLLSYNC.bit.DFLLCTRLB) { DBGC(DC_USB2422_INIT_OSC_SYNC_DFLLCTRLB_2); }
105 posc->DFLLCTRLB.bit.MODE = 1;
106 while (posc->DFLLSYNC.bit.DFLLCTRLB) { DBGC(DC_USB2422_INIT_OSC_SYNC_DFLLCTRLB_3); }
107 posc->DFLLCTRLB.bit.QLDIS = 0;
108 while (posc->DFLLSYNC.bit.DFLLCTRLB) { DBGC(DC_USB2422_INIT_OSC_SYNC_DFLLCTRLB_4); }
109 posc->DFLLCTRLB.bit.CCDIS = 1;
110 posc->DFLLMUL.bit.MUL = 0xBB80; //4800 x 1KHz
111 while (posc->DFLLSYNC.bit.DFLLMUL) { DBGC(DC_USB2422_INIT_OSC_SYNC_DFLLMUL); }
112 posc->DFLLCTRLA.bit.ENABLE = 1;
113 while (posc->DFLLSYNC.bit.ENABLE) { DBGC(DC_USB2422_INIT_OSC_SYNC_ENABLING); }
115 pusb->DEVICE.CTRLA.bit.SWRST = 1;
116 while (pusb->DEVICE.SYNCBUSY.bit.SWRST) { DBGC(DC_USB2422_INIT_USB_SYNC_SWRST); }
117 while (pusb->DEVICE.CTRLA.bit.SWRST) { DBGC(DC_USB2422_INIT_USB_WAIT_SWRST); }
118 //calibration from factory presets
119 pusb->DEVICE.PADCAL.bit.TRANSN = (USB_FUSES_TRANSN_ADDR >> USB_FUSES_TRANSN_Pos) & USB_FUSES_TRANSN_Msk;
120 pusb->DEVICE.PADCAL.bit.TRANSP = (USB_FUSES_TRANSP_ADDR >> USB_FUSES_TRANSP_Pos) & USB_FUSES_TRANSP_Msk;
121 pusb->DEVICE.PADCAL.bit.TRIM = (USB_FUSES_TRIM_ADDR >> USB_FUSES_TRIM_Pos) & USB_FUSES_TRIM_Msk;
122 //device mode, enabled
123 pusb->DEVICE.CTRLB.bit.SPDCONF = 0; //full speed
124 pusb->DEVICE.CTRLA.bit.MODE = 0;
125 pusb->DEVICE.CTRLA.bit.ENABLE = 1;
126 while (pusb->DEVICE.SYNCBUSY.bit.ENABLE) { DBGC(DC_USB2422_INIT_USB_SYNC_ENABLING); }
128 pusb->DEVICE.QOSCTRL.bit.DQOS = 2;
129 pusb->DEVICE.QOSCTRL.bit.CQOS = 2;
131 pport->Group[USB2422_HUB_ACTIVE_GROUP].PINCFG[USB2422_HUB_ACTIVE_PIN].bit.INEN = 1;
133 i2c0_init(); //IC2 clk must be high at USB2422 reset release time to signal SMB configuration
135 pspi->bit.HUB_CONNECT = 1; //connect signal
136 pspi->bit.HUB_RESET_N = 1; //reset high
141 #ifndef MD_BOOTLOADER
143 usb_extra_manual = 0;
146 #endif //MD_BOOTLOADER
148 DBGC(DC_USB2422_INIT_COMPLETE);
153 Srdata_t *pspi = &srdata;
155 DBGC(DC_USB_RESET_BEGIN);
157 //pulse reset for at least 1 usec
158 pspi->bit.HUB_RESET_N = 0; //reset low
161 pspi->bit.HUB_RESET_N = 1; //reset high to run
165 DBGC(DC_USB_RESET_COMPLETE);
168 void USB_configure(void)
170 Usb2422 *pusb2422 = &USB2422_shadow;
171 memset(pusb2422, 0, sizeof(Usb2422));
173 uint16_t *serial_use = (uint16_t *)SERNAME; //Default to use SERNAME from this file
174 uint8_t serial_length = sizeof(SERNAME) / sizeof(uint16_t); //Default to use SERNAME from this file
175 #ifndef MD_BOOTLOADER
176 uint32_t serial_ptrloc = (uint32_t)&_srom - 4;
177 #else //MD_BOOTLOADER
178 uint32_t serial_ptrloc = (uint32_t)&_erom - 4;
179 #endif //MD_BOOTLOADER
180 uint32_t serial_address = *(uint32_t *)serial_ptrloc; //Address of bootloader's serial number if available
182 DBGC(DC_USB_CONFIGURE_BEGIN);
184 if (serial_address != 0xFFFFFFFF && serial_address < serial_ptrloc) //Check for factory programmed serial address
186 if ((serial_address & 0xFF) % 4 == 0) //Check alignment
188 serial_use = (uint16_t *)(serial_address);
190 while ((*(serial_use + serial_length) > 32 && *(serial_use + serial_length) < 127) &&
191 serial_length < BOOTLOADER_SERIAL_MAX_SIZE)
194 DBGC(DC_USB_CONFIGURE_GET_SERIAL);
199 //configure Usb2422 registers
200 pusb2422->VID.reg = 0x04D8; // from Microchip 4/19/2018
201 pusb2422->PID.reg = 0xEEC5; // from Microchip 4/19/2018 = Massdrop, Inc. USB Hub
202 pusb2422->DID.reg = 0x0101; // BCD 01.01
203 pusb2422->CFG1.bit.SELF_BUS_PWR = 1; // self powered for now
204 pusb2422->CFG1.bit.HS_DISABLE = 1; // full or high speed
205 //pusb2422->CFG2.bit.COMPOUND = 0; // compound device
206 pusb2422->CFG3.bit.STRING_EN = 1; // strings enabled
207 //pusb2422->NRD.bit.PORT2_NR = 0; // MCU is non-removable
208 pusb2422->MAXPB.reg = 20; // 0mA
209 pusb2422->HCMCB.reg = 20; // 0mA
210 pusb2422->MFRSL.reg = sizeof(MFRNAME) / sizeof(uint16_t);
211 pusb2422->PRDSL.reg = sizeof(PRDNAME) / sizeof(uint16_t);
212 pusb2422->SERSL.reg = serial_length;
213 memcpy(pusb2422->MFRSTR, MFRNAME, sizeof(MFRNAME));
214 memcpy(pusb2422->PRDSTR, PRDNAME, sizeof(PRDNAME));
215 memcpy(pusb2422->SERSTR, serial_use, serial_length * sizeof(uint16_t));
216 //pusb2422->BOOSTUP.bit.BOOST=3; //upstream port
217 //pusb2422->BOOSTDOWN.bit.BOOST1=0; // extra port
218 //pusb2422->BOOSTDOWN.bit.BOOST2=2; //MCU is close
219 pusb2422->STCD.bit.USB_ATTACH = 1;
220 USB_write2422_block();
224 DBGC(DC_USB_CONFIGURE_COMPLETE);
227 uint16_t USB_active(void)
229 return (PORT->Group[USB2422_HUB_ACTIVE_GROUP].IN.reg & (1 << USB2422_HUB_ACTIVE_PIN)) != 0;
232 void USB_set_host_by_voltage(void)
234 //UP is upstream device (HOST)
235 //DN1 is downstream device (EXTRA)
236 //DN2 is keyboard (KEYB)
238 DBGC(DC_USB_SET_HOST_BY_VOLTAGE_BEGIN);
240 usb_host_port = USB_HOST_PORT_UNKNOWN;
241 #ifndef MD_BOOTLOADER
242 usb_extra_state = USB_EXTRA_STATE_UNKNOWN;
243 #endif //MD_BOOTLOADER
244 srdata.bit.SRC_1 = 1; //USBC-1 available for test
245 srdata.bit.SRC_2 = 1; //USBC-2 available for test
246 srdata.bit.E_UP_N = 1; //HOST disable
247 srdata.bit.E_DN1_N = 1; //EXTRA disable
248 srdata.bit.E_VBUS_1 = 0; //USBC-1 disable full power I/O
249 srdata.bit.E_VBUS_2 = 0; //USBC-2 disable full power I/O
255 while ((v_5v = adc_get(ADC_5V)) < ADC_5V_START_LEVEL) { DBGC(DC_USB_SET_HOST_5V_LOW_WAITING); }
257 v_con_1 = adc_get(ADC_CON1);
258 v_con_2 = adc_get(ADC_CON2);
260 v_con_1_boot = v_con_1;
261 v_con_2_boot = v_con_2;
263 if (v_con_1 > v_con_2)
265 srdata.bit.S_UP = 0; //HOST to USBC-1
266 srdata.bit.S_DN1 = 1; //EXTRA to USBC-2
267 srdata.bit.SRC_1 = 1; //HOST on USBC-1
268 srdata.bit.SRC_2 = 0; //EXTRA available on USBC-2
270 srdata.bit.E_VBUS_1 = 1; //USBC-1 enable full power I/O
271 srdata.bit.E_VBUS_2 = 0; //USBC-2 disable full power I/O
275 srdata.bit.E_UP_N = 0; //HOST enable
279 usb_host_port = USB_HOST_PORT_1;
283 srdata.bit.S_UP = 1; //EXTRA to USBC-1
284 srdata.bit.S_DN1 = 0; //HOST to USBC-2
285 srdata.bit.SRC_1 = 0; //EXTRA available on USBC-1
286 srdata.bit.SRC_2 = 1; //HOST on USBC-2
288 srdata.bit.E_VBUS_1 = 0; //USBC-1 disable full power I/O
289 srdata.bit.E_VBUS_2 = 1; //USBC-2 enable full power I/O
293 srdata.bit.E_UP_N = 0; //HOST enable
297 usb_host_port = USB_HOST_PORT_2;
300 #ifndef MD_BOOTLOADER
301 usb_extra_state = USB_EXTRA_STATE_DISABLED;
302 #endif //MD_BOOTLOADER
307 DBGC(DC_USB_SET_HOST_BY_VOLTAGE_COMPLETE);
310 uint8_t USB2422_Port_Detect_Init(void)
312 uint32_t port_detect_retry_ms;
315 DBGC(DC_PORT_DETECT_INIT_BEGIN);
317 USB_set_host_by_voltage();
319 port_detect_retry_ms = CLK_get_ms() + PORT_DETECT_RETRY_INTERVAL;
321 while (!USB_active())
323 tmod = CLK_get_ms() % PORT_DETECT_RETRY_INTERVAL;
325 if (v_con_1 > v_con_2) //Values updated from USB_set_host_by_voltage();
327 //1 flash for port 1 detected
328 if (tmod > 500 && tmod < 600) { led_on; }
331 else if (v_con_2 > v_con_1) //Values updated from USB_set_host_by_voltage();
333 //2 flash for port 2 detected
334 if (tmod > 500 && tmod < 600) { led_on; }
335 else if (tmod > 700 && tmod < 800) { led_on; }
339 if (CLK_get_ms() > port_detect_retry_ms)
341 DBGC(DC_PORT_DETECT_INIT_FAILED);
346 DBGC(DC_PORT_DETECT_INIT_COMPLETE);
351 #ifndef MD_BOOTLOADER
353 void USB_ExtraSetState(uint8_t state)
355 uint8_t state_save = state;
357 if (state == USB_EXTRA_STATE_DISABLED_UNTIL_REPLUG)
358 state = USB_EXTRA_STATE_DISABLED;
360 if (usb_host_port == USB_HOST_PORT_1) srdata.bit.E_VBUS_2 = state;
361 else if (usb_host_port == USB_HOST_PORT_2) srdata.bit.E_VBUS_1 = state;
364 srdata.bit.E_DN1_N = !state;
367 usb_extra_state = state_save;
369 if (usb_extra_state == USB_EXTRA_STATE_ENABLED) CDC_print("USB: Extra enabled\r\n");
370 else if (usb_extra_state == USB_EXTRA_STATE_DISABLED)
372 CDC_print("USB: Extra disabled\r\n");
373 if (led_animation_breathing) gcr_breathe = gcr_desired;
375 else if (usb_extra_state == USB_EXTRA_STATE_DISABLED_UNTIL_REPLUG) CDC_print("USB: Extra disabled until replug\r\n");
376 else CDC_print("USB: Extra state unknown\r\n");
379 void USB_HandleExtraDevice(void)
383 if (usb_host_port == USB_HOST_PORT_1) adcval = adc_get(ADC_CON2);
384 else if (usb_host_port == USB_HOST_PORT_2) adcval = adc_get(ADC_CON1);
387 adc_extra = adc_extra * 0.9 + adcval * 0.1;
389 //Check for a forced disable state (such as overload prevention)
390 if (usb_extra_state == USB_EXTRA_STATE_DISABLED_UNTIL_REPLUG)
392 //Detect unplug and reset state to disabled
393 if (adc_extra > USB_EXTRA_ADC_THRESHOLD) usb_extra_state = USB_EXTRA_STATE_DISABLED;
395 return; //Return even if unplug detected
398 if (usb_extra_manual)
400 if (usb_extra_state == USB_EXTRA_STATE_DISABLED)
401 USB_ExtraSetState(USB_EXTRA_STATE_ENABLED);
406 //dpf("a %i %i\r\n",adcval, adc_extra);
407 if (usb_extra_state == USB_EXTRA_STATE_DISABLED && adc_extra < USB_EXTRA_ADC_THRESHOLD) USB_ExtraSetState(USB_EXTRA_STATE_ENABLED);
408 else if (usb_extra_state == USB_EXTRA_STATE_ENABLED && adc_extra > USB_EXTRA_ADC_THRESHOLD) USB_ExtraSetState(USB_EXTRA_STATE_DISABLED);
411 #endif //MD_BOOTLOADER