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;
81 DBGC(DC_USB2422_INIT_BEGIN);
83 while ((v_5v = adc_get(ADC_5V)) < ADC_5V_START_LEVEL) { DBGC(DC_USB2422_INIT_WAIT_5V_LOW); }
85 //setup peripheral and synchronous bus clocks to USB
86 pgclk->PCHCTRL[10].bit.GEN = 0;
87 pgclk->PCHCTRL[10].bit.CHEN = 1;
88 pmclk->AHBMASK.bit.USB_ = 1;
89 pmclk->APBBMASK.bit.USB_ = 1;
91 //setup port pins for D-, D+, and SOF_1KHZ
92 pport->Group[0].PMUX[12].reg = 0x77; //PA24, PA25, function column H for USB D-, D+
93 pport->Group[0].PINCFG[24].bit.PMUXEN = 1;
94 pport->Group[0].PINCFG[25].bit.PMUXEN = 1;
95 pport->Group[1].PMUX[11].bit.PMUXE = 7; //PB22, function column H for USB SOF_1KHz output
96 pport->Group[1].PINCFG[22].bit.PMUXEN = 1;
98 //configure and enable DFLL for USB clock recovery mode at 48MHz
99 posc->DFLLCTRLA.bit.ENABLE = 0;
100 while (posc->DFLLSYNC.bit.ENABLE) { DBGC(DC_USB2422_INIT_OSC_SYNC_DISABLING); }
101 while (posc->DFLLSYNC.bit.DFLLCTRLB) { DBGC(DC_USB2422_INIT_OSC_SYNC_DFLLCTRLB_1); }
102 posc->DFLLCTRLB.bit.USBCRM = 1;
103 while (posc->DFLLSYNC.bit.DFLLCTRLB) { DBGC(DC_USB2422_INIT_OSC_SYNC_DFLLCTRLB_2); }
104 posc->DFLLCTRLB.bit.MODE = 1;
105 while (posc->DFLLSYNC.bit.DFLLCTRLB) { DBGC(DC_USB2422_INIT_OSC_SYNC_DFLLCTRLB_3); }
106 posc->DFLLCTRLB.bit.QLDIS = 0;
107 while (posc->DFLLSYNC.bit.DFLLCTRLB) { DBGC(DC_USB2422_INIT_OSC_SYNC_DFLLCTRLB_4); }
108 posc->DFLLCTRLB.bit.CCDIS = 1;
109 posc->DFLLMUL.bit.MUL = 0xBB80; //4800 x 1KHz
110 while (posc->DFLLSYNC.bit.DFLLMUL) { DBGC(DC_USB2422_INIT_OSC_SYNC_DFLLMUL); }
111 posc->DFLLCTRLA.bit.ENABLE = 1;
112 while (posc->DFLLSYNC.bit.ENABLE) { DBGC(DC_USB2422_INIT_OSC_SYNC_ENABLING); }
114 pusb->DEVICE.CTRLA.bit.SWRST = 1;
115 while (pusb->DEVICE.SYNCBUSY.bit.SWRST) { DBGC(DC_USB2422_INIT_USB_SYNC_SWRST); }
116 while (pusb->DEVICE.CTRLA.bit.SWRST) { DBGC(DC_USB2422_INIT_USB_WAIT_SWRST); }
117 //calibration from factory presets
118 pusb->DEVICE.PADCAL.bit.TRANSN = (USB_FUSES_TRANSN_ADDR >> USB_FUSES_TRANSN_Pos) & USB_FUSES_TRANSN_Msk;
119 pusb->DEVICE.PADCAL.bit.TRANSP = (USB_FUSES_TRANSP_ADDR >> USB_FUSES_TRANSP_Pos) & USB_FUSES_TRANSP_Msk;
120 pusb->DEVICE.PADCAL.bit.TRIM = (USB_FUSES_TRIM_ADDR >> USB_FUSES_TRIM_Pos) & USB_FUSES_TRIM_Msk;
121 //device mode, enabled
122 pusb->DEVICE.CTRLB.bit.SPDCONF = 0; //full speed
123 pusb->DEVICE.CTRLA.bit.MODE = 0;
124 pusb->DEVICE.CTRLA.bit.ENABLE = 1;
125 while (pusb->DEVICE.SYNCBUSY.bit.ENABLE) { DBGC(DC_USB2422_INIT_USB_SYNC_ENABLING); }
127 pusb->DEVICE.QOSCTRL.bit.DQOS = 2;
128 pusb->DEVICE.QOSCTRL.bit.CQOS = 2;
130 pport->Group[USB2422_HUB_ACTIVE_GROUP].PINCFG[USB2422_HUB_ACTIVE_PIN].bit.INEN = 1;
132 i2c0_init(); //IC2 clk must be high at USB2422 reset release time to signal SMB configuration
134 sr_exp_data.bit.HUB_CONNECT = 1; //connect signal
135 sr_exp_data.bit.HUB_RESET_N = 1; //reset high
140 #ifndef MD_BOOTLOADER
142 usb_extra_manual = 0;
145 #endif //MD_BOOTLOADER
147 DBGC(DC_USB2422_INIT_COMPLETE);
152 DBGC(DC_USB_RESET_BEGIN);
154 //pulse reset for at least 1 usec
155 sr_exp_data.bit.HUB_RESET_N = 0; //reset low
158 sr_exp_data.bit.HUB_RESET_N = 1; //reset high to run
161 DBGC(DC_USB_RESET_COMPLETE);
164 void USB_configure(void)
166 Usb2422 *pusb2422 = &USB2422_shadow;
167 memset(pusb2422, 0, sizeof(Usb2422));
169 uint16_t *serial_use = (uint16_t *)SERNAME; //Default to use SERNAME from this file
170 uint8_t serial_length = sizeof(SERNAME) / sizeof(uint16_t); //Default to use SERNAME from this file
171 #ifndef MD_BOOTLOADER
172 uint32_t serial_ptrloc = (uint32_t)&_srom - 4;
173 #else //MD_BOOTLOADER
174 uint32_t serial_ptrloc = (uint32_t)&_erom - 4;
175 #endif //MD_BOOTLOADER
176 uint32_t serial_address = *(uint32_t *)serial_ptrloc; //Address of bootloader's serial number if available
178 DBGC(DC_USB_CONFIGURE_BEGIN);
180 if (serial_address != 0xFFFFFFFF && serial_address < serial_ptrloc) //Check for factory programmed serial address
182 if ((serial_address & 0xFF) % 4 == 0) //Check alignment
184 serial_use = (uint16_t *)(serial_address);
186 while ((*(serial_use + serial_length) > 32 && *(serial_use + serial_length) < 127) &&
187 serial_length < BOOTLOADER_SERIAL_MAX_SIZE)
190 DBGC(DC_USB_CONFIGURE_GET_SERIAL);
195 //configure Usb2422 registers
196 pusb2422->VID.reg = 0x04D8; // from Microchip 4/19/2018
197 pusb2422->PID.reg = 0xEEC5; // from Microchip 4/19/2018 = Massdrop, Inc. USB Hub
198 pusb2422->DID.reg = 0x0101; // BCD 01.01
199 pusb2422->CFG1.bit.SELF_BUS_PWR = 1; // self powered for now
200 pusb2422->CFG1.bit.HS_DISABLE = 1; // full or high speed
201 //pusb2422->CFG2.bit.COMPOUND = 0; // compound device
202 pusb2422->CFG3.bit.STRING_EN = 1; // strings enabled
203 //pusb2422->NRD.bit.PORT2_NR = 0; // MCU is non-removable
204 pusb2422->MAXPB.reg = 20; // 0mA
205 pusb2422->HCMCB.reg = 20; // 0mA
206 pusb2422->MFRSL.reg = sizeof(MFRNAME) / sizeof(uint16_t);
207 pusb2422->PRDSL.reg = sizeof(PRDNAME) / sizeof(uint16_t);
208 pusb2422->SERSL.reg = serial_length;
209 memcpy(pusb2422->MFRSTR, MFRNAME, sizeof(MFRNAME));
210 memcpy(pusb2422->PRDSTR, PRDNAME, sizeof(PRDNAME));
211 memcpy(pusb2422->SERSTR, serial_use, serial_length * sizeof(uint16_t));
212 //pusb2422->BOOSTUP.bit.BOOST=3; //upstream port
213 //pusb2422->BOOSTDOWN.bit.BOOST1=0; // extra port
214 //pusb2422->BOOSTDOWN.bit.BOOST2=2; //MCU is close
215 pusb2422->STCD.bit.USB_ATTACH = 1;
216 USB_write2422_block();
220 DBGC(DC_USB_CONFIGURE_COMPLETE);
223 uint16_t USB_active(void)
225 return (PORT->Group[USB2422_HUB_ACTIVE_GROUP].IN.reg & (1 << USB2422_HUB_ACTIVE_PIN)) != 0;
228 void USB_set_host_by_voltage(void)
230 //UP is upstream device (HOST)
231 //DN1 is downstream device (EXTRA)
232 //DN2 is keyboard (KEYB)
234 DBGC(DC_USB_SET_HOST_BY_VOLTAGE_BEGIN);
236 usb_host_port = USB_HOST_PORT_UNKNOWN;
237 #ifndef MD_BOOTLOADER
238 usb_extra_state = USB_EXTRA_STATE_UNKNOWN;
239 #endif //MD_BOOTLOADER
240 sr_exp_data.bit.SRC_1 = 1; //USBC-1 available for test
241 sr_exp_data.bit.SRC_2 = 1; //USBC-2 available for test
242 sr_exp_data.bit.E_UP_N = 1; //HOST disable
243 sr_exp_data.bit.E_DN1_N = 1; //EXTRA disable
244 sr_exp_data.bit.E_VBUS_1 = 0; //USBC-1 disable full power I/O
245 sr_exp_data.bit.E_VBUS_2 = 0; //USBC-2 disable full power I/O
251 while ((v_5v = adc_get(ADC_5V)) < ADC_5V_START_LEVEL) { DBGC(DC_USB_SET_HOST_5V_LOW_WAITING); }
253 v_con_1 = adc_get(ADC_CON1);
254 v_con_2 = adc_get(ADC_CON2);
256 v_con_1_boot = v_con_1;
257 v_con_2_boot = v_con_2;
259 if (v_con_1 > v_con_2)
261 sr_exp_data.bit.S_UP = 0; //HOST to USBC-1
262 sr_exp_data.bit.S_DN1 = 1; //EXTRA to USBC-2
263 sr_exp_data.bit.SRC_1 = 1; //HOST on USBC-1
264 sr_exp_data.bit.SRC_2 = 0; //EXTRA available on USBC-2
266 sr_exp_data.bit.E_VBUS_1 = 1; //USBC-1 enable full power I/O
267 sr_exp_data.bit.E_VBUS_2 = 0; //USBC-2 disable full power I/O
271 sr_exp_data.bit.E_UP_N = 0; //HOST enable
275 usb_host_port = USB_HOST_PORT_1;
279 sr_exp_data.bit.S_UP = 1; //EXTRA to USBC-1
280 sr_exp_data.bit.S_DN1 = 0; //HOST to USBC-2
281 sr_exp_data.bit.SRC_1 = 0; //EXTRA available on USBC-1
282 sr_exp_data.bit.SRC_2 = 1; //HOST on USBC-2
284 sr_exp_data.bit.E_VBUS_1 = 0; //USBC-1 disable full power I/O
285 sr_exp_data.bit.E_VBUS_2 = 1; //USBC-2 enable full power I/O
289 sr_exp_data.bit.E_UP_N = 0; //HOST enable
293 usb_host_port = USB_HOST_PORT_2;
296 #ifndef MD_BOOTLOADER
297 usb_extra_state = USB_EXTRA_STATE_DISABLED;
298 #endif //MD_BOOTLOADER
303 DBGC(DC_USB_SET_HOST_BY_VOLTAGE_COMPLETE);
306 uint8_t USB2422_Port_Detect_Init(void)
308 uint32_t port_detect_retry_ms;
311 DBGC(DC_PORT_DETECT_INIT_BEGIN);
313 USB_set_host_by_voltage();
315 port_detect_retry_ms = timer_read64() + PORT_DETECT_RETRY_INTERVAL;
317 while (!USB_active())
319 tmod = timer_read64() % PORT_DETECT_RETRY_INTERVAL;
321 if (v_con_1 > v_con_2) //Values updated from USB_set_host_by_voltage();
323 //1 flash for port 1 detected
324 if (tmod > 500 && tmod < 600) { DBG_LED_ON; }
325 else { DBG_LED_OFF; }
327 else if (v_con_2 > v_con_1) //Values updated from USB_set_host_by_voltage();
329 //2 flash for port 2 detected
330 if (tmod > 500 && tmod < 600) { DBG_LED_ON; }
331 else if (tmod > 700 && tmod < 800) { DBG_LED_ON; }
332 else { DBG_LED_OFF; }
335 if (timer_read64() > port_detect_retry_ms)
337 DBGC(DC_PORT_DETECT_INIT_FAILED);
342 DBGC(DC_PORT_DETECT_INIT_COMPLETE);
347 #ifndef MD_BOOTLOADER
349 void USB_ExtraSetState(uint8_t state)
351 uint8_t state_save = state;
353 if (state == USB_EXTRA_STATE_DISABLED_UNTIL_REPLUG)
354 state = USB_EXTRA_STATE_DISABLED;
356 if (usb_host_port == USB_HOST_PORT_1) sr_exp_data.bit.E_VBUS_2 = state;
357 else if (usb_host_port == USB_HOST_PORT_2) sr_exp_data.bit.E_VBUS_1 = state;
360 sr_exp_data.bit.E_DN1_N = !state;
363 usb_extra_state = state_save;
365 if (usb_extra_state == USB_EXTRA_STATE_ENABLED) CDC_print("USB: Extra enabled\r\n");
366 else if (usb_extra_state == USB_EXTRA_STATE_DISABLED)
368 CDC_print("USB: Extra disabled\r\n");
369 if (led_animation_breathing) gcr_breathe = gcr_desired;
371 else if (usb_extra_state == USB_EXTRA_STATE_DISABLED_UNTIL_REPLUG) CDC_print("USB: Extra disabled until replug\r\n");
372 else CDC_print("USB: Extra state unknown\r\n");
375 void USB_HandleExtraDevice(void)
379 if (usb_host_port == USB_HOST_PORT_1) adcval = adc_get(ADC_CON2);
380 else if (usb_host_port == USB_HOST_PORT_2) adcval = adc_get(ADC_CON1);
383 adc_extra = adc_extra * 0.9 + adcval * 0.1;
385 //Check for a forced disable state (such as overload prevention)
386 if (usb_extra_state == USB_EXTRA_STATE_DISABLED_UNTIL_REPLUG)
388 //Detect unplug and reset state to disabled
389 if (adc_extra > USB_EXTRA_ADC_THRESHOLD) usb_extra_state = USB_EXTRA_STATE_DISABLED;
391 return; //Return even if unplug detected
394 if (usb_extra_manual)
396 if (usb_extra_state == USB_EXTRA_STATE_DISABLED)
397 USB_ExtraSetState(USB_EXTRA_STATE_ENABLED);
402 //dpf("a %i %i\r\n",adcval, adc_extra);
403 if (usb_extra_state == USB_EXTRA_STATE_DISABLED && adc_extra < USB_EXTRA_ADC_THRESHOLD) USB_ExtraSetState(USB_EXTRA_STATE_ENABLED);
404 else if (usb_extra_state == USB_EXTRA_STATE_ENABLED && adc_extra > USB_EXTRA_ADC_THRESHOLD) USB_ExtraSetState(USB_EXTRA_STATE_DISABLED);
407 #endif //MD_BOOTLOADER