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Commit 268595c

Browse filesBrowse files
me-no-devme-no-dev
authored
Various USB fixes (espressif#5422)
* Fix compile archive arguments for the new toolchain * Add menu to S2 for picking through which port to upload Internal USB CDC requires to reset and wait for the new port (because persistence is not yet stable) * USB CDC should also be started in main * Fix URL and USB version for WebUSB * Update vendor callback API * Update CDC::write to use TX_DONE semaphore * Update USB_Serial example
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‎boards.txt

Copy file name to clipboardExpand all lines: boards.txt
+10-2Lines changed: 10 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -1,5 +1,6 @@
11
menu.UploadSpeed=Upload Speed
22
menu.SerialMode=Serial Connected To
3+
menu.UploadMode=Upload Mode
34
menu.CPUFreq=CPU Frequency
45
menu.FlashFreq=Flash Frequency
56
menu.FlashMode=Flash Mode
@@ -158,8 +159,8 @@ esp32s2.upload.maximum_size=1310720
158159
esp32s2.upload.maximum_data_size=327680
159160
esp32s2.upload.flags=
160161
esp32s2.upload.extra_flags=
161-
esp32s2.upload.use_1200bps_touch=true
162-
esp32s2.upload.wait_for_upload_port=true
162+
esp32s2.upload.use_1200bps_touch=false
163+
esp32s2.upload.wait_for_upload_port=false
163164

164165
esp32s2.serial.disableDTR=false
165166
esp32s2.serial.disableRTS=false
@@ -186,6 +187,13 @@ esp32s2.menu.SerialMode.default.build.serial=0
186187
esp32s2.menu.SerialMode.cdc=USB CDC
187188
esp32s2.menu.SerialMode.cdc.build.serial=1
188189

190+
esp32s2.menu.UploadMode.default=UART0
191+
esp32s2.menu.UploadMode.default.upload.use_1200bps_touch=false
192+
esp32s2.menu.UploadMode.default.upload.wait_for_upload_port=false
193+
esp32s2.menu.UploadMode.cdc=Internal USB
194+
esp32s2.menu.UploadMode.cdc.upload.use_1200bps_touch=true
195+
esp32s2.menu.UploadMode.cdc.upload.wait_for_upload_port=true
196+
189197
esp32s2.menu.PSRAM.disabled=Disabled
190198
esp32s2.menu.PSRAM.disabled.build.defines=
191199
esp32s2.menu.PSRAM.enabled=Enabled

‎cores/esp32/USB.cpp

Copy file name to clipboardExpand all lines: cores/esp32/USB.cpp
+4-1Lines changed: 4 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -121,7 +121,7 @@ ESPUSB::ESPUSB(size_t task_stack_size, uint8_t event_task_priority)
121121
,usb_attributes(TUSB_DESC_CONFIG_ATT_SELF_POWERED)
122122
,usb_power_ma(500)
123123
,webusb_enabled(false)
124-
,webusb_url("espressif.github.io/arduino-esp32/webusb.html")
124+
,webusb_url("https://espressif.github.io/arduino-esp32/webusb.html")
125125
,_started(false)
126126
,_task_stack_size(task_stack_size)
127127
,_event_task_priority(event_task_priority)
@@ -282,6 +282,9 @@ uint8_t ESPUSB::usbAttributes(void){
282282
bool ESPUSB::webUSB(bool enabled){
283283
if(!_started){
284284
webusb_enabled = enabled;
285+
if(enabled && usb_version < 0x0210){
286+
usb_version = 0x0210;
287+
}
285288
}
286289
return !_started;
287290
}

‎cores/esp32/USBCDC.cpp

Copy file name to clipboardExpand all lines: cores/esp32/USBCDC.cpp
+34Lines changed: 34 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -38,27 +38,46 @@ static uint16_t load_cdc_descriptor(uint8_t * dst, uint8_t * itf)
3838
return TUD_CDC_DESC_LEN;
3939
}
4040

41+
// Invoked when line state DTR & RTS are changed via SET_CONTROL_LINE_STATE
4142
void tud_cdc_line_state_cb(uint8_t itf, bool dtr, bool rts)
4243
{
44+
//isr_log_v("itf: %u, dtr: %u, rts: %u", itf, dtr, rts);
4345
if(itf < MAX_USB_CDC_DEVICES && devices[itf] != NULL){
4446
devices[itf]->_onLineState(dtr, rts);
4547
}
4648
}
4749

50+
// Invoked when line coding is change via SET_LINE_CODING
4851
void tud_cdc_line_coding_cb(uint8_t itf, cdc_line_coding_t const* p_line_coding)
4952
{
53+
//isr_log_v("itf: %u, bit_rate: %u, data_bits: %u, stop_bits: %u, parity: %u", itf, p_line_coding->bit_rate, p_line_coding->data_bits, p_line_coding->stop_bits, p_line_coding->parity);
5054
if(itf < MAX_USB_CDC_DEVICES && devices[itf] != NULL){
5155
devices[itf]->_onLineCoding(p_line_coding->bit_rate, p_line_coding->stop_bits, p_line_coding->parity, p_line_coding->data_bits);
5256
}
5357
}
5458

59+
// Invoked when received new data
5560
void tud_cdc_rx_cb(uint8_t itf)
5661
{
62+
//isr_log_v("itf: %u", itf);
5763
if(itf < MAX_USB_CDC_DEVICES && devices[itf] != NULL){
5864
devices[itf]->_onRX();
5965
}
6066
}
6167

68+
// Invoked when received send break
69+
void tud_cdc_send_break_cb(uint8_t itf, uint16_t duration_ms){
70+
//isr_log_v("itf: %u, duration_ms: %u", itf, duration_ms);
71+
}
72+
73+
// Invoked when space becomes available in TX buffer
74+
void tud_cdc_tx_complete_cb(uint8_t itf){
75+
//isr_log_v("itf: %u", itf);
76+
if(itf < MAX_USB_CDC_DEVICES && devices[itf] != NULL){
77+
xSemaphoreGive(devices[itf]->tx_sem);
78+
devices[itf]->_onTX();
79+
}
80+
}
6281

6382
static size_t tinyusb_cdc_write(uint8_t itf, const uint8_t *buffer, size_t size){
6483
if(itf >= MAX_USB_CDC_DEVICES){
@@ -84,6 +103,7 @@ static size_t tinyusb_cdc_write(uint8_t itf, const uint8_t *buffer, size_t size)
84103
sofar += sent;
85104
tosend -= sent;
86105
tud_cdc_n_write_flush(itf);
106+
xSemaphoreTake(devices[itf]->tx_sem, portMAX_DELAY);
87107
}
88108
return sofar;
89109
}
@@ -103,6 +123,7 @@ USBCDC::USBCDC(uint8_t itfn) : itf(itfn), bit_rate(0), stop_bits(0), parity(0),
103123
tinyusb_enable_interface(USB_INTERFACE_CDC, TUD_CDC_DESC_LEN, load_cdc_descriptor);
104124
if(itf < MAX_USB_CDC_DEVICES){
105125
devices[itf] = this;
126+
tx_sem = NULL;
106127
arduino_usb_event_handler_register_with(ARDUINO_USB_EVENTS, ARDUINO_USB_STOPPED_EVENT, usb_unplugged_cb, this);
107128
}
108129
}
@@ -128,10 +149,18 @@ size_t USBCDC::setRxBufferSize(size_t rx_queue_len){
128149
void USBCDC::begin(unsigned long baud)
129150
{
130151
setRxBufferSize(256);//default if not preset
152+
if(tx_sem == NULL){
153+
tx_sem = xSemaphoreCreateBinary();
154+
xSemaphoreTake(tx_sem, 0);
155+
}
131156
}
132157

133158
void USBCDC::end()
134159
{
160+
if (tx_sem != NULL) {
161+
vSemaphoreDelete(tx_sem);
162+
tx_sem = NULL;
163+
}
135164
}
136165

137166
void USBCDC::_onUnplugged(void){
@@ -228,6 +257,11 @@ void USBCDC::_onRX(){
228257
arduino_usb_event_post(ARDUINO_USB_CDC_EVENTS, ARDUINO_USB_CDC_RX_EVENT, &p, sizeof(arduino_usb_cdc_event_data_t), portMAX_DELAY);
229258
}
230259

260+
void USBCDC::_onTX(){
261+
arduino_usb_cdc_event_data_t p = {0};
262+
arduino_usb_event_post(ARDUINO_USB_CDC_EVENTS, ARDUINO_USB_CDC_TX_EVENT, &p, sizeof(arduino_usb_cdc_event_data_t), portMAX_DELAY);
263+
}
264+
231265
void USBCDC::enableReboot(bool enable){
232266
reboot_enable = enable;
233267
}

‎cores/esp32/USBCDC.h

Copy file name to clipboardExpand all lines: cores/esp32/USBCDC.h
+3Lines changed: 3 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -30,6 +30,7 @@ typedef enum {
3030
ARDUINO_USB_CDC_LINE_STATE_EVENT,
3131
ARDUINO_USB_CDC_LINE_CODING_EVENT,
3232
ARDUINO_USB_CDC_RX_EVENT,
33+
ARDUINO_USB_CDC_TX_EVENT,
3334
ARDUINO_USB_CDC_MAX_EVENT,
3435
} arduino_usb_cdc_event_t;
3536

@@ -110,7 +111,9 @@ class USBCDC: public Stream
110111
void _onLineState(bool _dtr, bool _rts);
111112
void _onLineCoding(uint32_t _bit_rate, uint8_t _stop_bits, uint8_t _parity, uint8_t _data_bits);
112113
void _onRX(void);
114+
void _onTX(void);
113115
void _onUnplugged(void);
116+
xSemaphoreHandle tx_sem;
114117

115118
protected:
116119
uint8_t itf;

‎cores/esp32/esp32-hal-tinyusb.c

Copy file name to clipboardExpand all lines: cores/esp32/esp32-hal-tinyusb.c
+22-24Lines changed: 22 additions & 24 deletions
Original file line numberDiff line numberDiff line change
@@ -228,7 +228,7 @@ typedef struct TU_ATTR_PACKED {
228228
static tinyusb_desc_webusb_url_t tinyusb_url_descriptor = {
229229
.bLength = 3,
230230
.bDescriptorType = 3, // WEBUSB URL type
231-
.bScheme = 1, // URL Scheme Prefix: 0: "http://", 1: "https://", 255: ""
231+
.bScheme = 255, // URL Scheme Prefix: 0: "http://", 1: "https://", 255: ""
232232
.url = ""
233233
};
234234

@@ -317,12 +317,11 @@ uint16_t const *tud_descriptor_string_cb(uint8_t index, uint16_t langid)
317317
*/
318318
uint8_t const * tud_descriptor_bos_cb(void)
319319
{
320-
//log_d("");
320+
//log_v("");
321321
return tinyusb_bos_descriptor;
322322
}
323323

324-
__attribute__ ((weak)) bool tinyusb_vendor_control_request_cb(uint8_t rhport, tusb_control_request_t const * request){ return false; }
325-
__attribute__ ((weak)) bool tinyusb_vendor_control_complete_cb(uint8_t rhport, tusb_control_request_t const * request){ return true; }
324+
__attribute__ ((weak)) bool tinyusb_vendor_control_request_cb(uint8_t rhport, uint8_t stage, tusb_control_request_t const * request){ return false; }
326325

327326
/**
328327
* @brief Handle WebUSB and Vendor requests.
@@ -331,30 +330,26 @@ bool tud_vendor_control_xfer_cb(uint8_t rhport, uint8_t stage, tusb_control_requ
331330
{
332331
if(WEBUSB_ENABLED && (request->bRequest == VENDOR_REQUEST_WEBUSB
333332
|| (request->bRequest == VENDOR_REQUEST_MICROSOFT && request->wIndex == 7))){
334-
if(request->bRequest == VENDOR_REQUEST_WEBUSB){
335-
// match vendor request in BOS descriptor
336-
// Get landing page url
337-
tinyusb_url_descriptor.bLength = 3 + strlen(WEBUSB_URL);
338-
snprintf(tinyusb_url_descriptor.url, 127, "%s", WEBUSB_URL);
339-
return tud_control_xfer(rhport, request, (void*) &tinyusb_url_descriptor, tinyusb_url_descriptor.bLength);
333+
// we only care for SETUP stage
334+
if (stage == CONTROL_STAGE_SETUP) {
335+
if(request->bRequest == VENDOR_REQUEST_WEBUSB){
336+
// match vendor request in BOS descriptor
337+
// Get landing page url
338+
tinyusb_url_descriptor.bLength = 3 + strlen(WEBUSB_URL);
339+
snprintf(tinyusb_url_descriptor.url, 127, "%s", WEBUSB_URL);
340+
return tud_control_xfer(rhport, request, (void*) &tinyusb_url_descriptor, tinyusb_url_descriptor.bLength);
341+
}
342+
// Get Microsoft OS 2.0 compatible descriptor
343+
uint16_t total_len;
344+
memcpy(&total_len, tinyusb_ms_os_20_descriptor + 8, 2);
345+
return tud_control_xfer(rhport, request, (void*) tinyusb_ms_os_20_descriptor, total_len);
340346
}
341-
// Get Microsoft OS 2.0 compatible descriptor
342-
uint16_t total_len;
343-
memcpy(&total_len, tinyusb_ms_os_20_descriptor + 8, 2);
344-
return tud_control_xfer(rhport, request, (void*) tinyusb_ms_os_20_descriptor, total_len);
347+
return true;
345348
}
346-
return tinyusb_vendor_control_request_cb(rhport, request);
349+
log_v("rhport: %u, stage: %u, type: 0x%x, request: 0x%x", rhport, stage, request->bmRequestType_bit.type, request->bRequest);
350+
return tinyusb_vendor_control_request_cb(rhport, stage, request);
347351
}
348352

349-
// bool tud_vendor_control_complete_cb(uint8_t rhport, tusb_control_request_t const * request)
350-
// {
351-
// if(!WEBUSB_ENABLED || !(request->bRequest == VENDOR_REQUEST_WEBUSB
352-
// || (request->bRequest == VENDOR_REQUEST_MICROSOFT && request->wIndex == 7))){
353-
// return tinyusb_vendor_control_complete_cb(rhport, request);
354-
// }
355-
// return true;
356-
// }
357-
358353
/*
359354
* Required Callbacks
360355
* */
@@ -537,6 +532,9 @@ static void IRAM_ATTR usb_persist_shutdown_handler(void)
537532
REG_WRITE(RTC_CNTL_OPTION1_REG, RTC_CNTL_FORCE_DOWNLOAD_BOOT);
538533
} else if (usb_persist_mode == RESTART_BOOTLOADER_DFU) {
539534
//DFU Download
535+
// Reset USB Core
536+
USB0.grstctl |= USB_CSFTRST;
537+
while ((USB0.grstctl & USB_CSFTRST) == USB_CSFTRST){}
540538
chip_usb_set_persist_flags(USBDC_BOOT_DFU);
541539
REG_WRITE(RTC_CNTL_OPTION1_REG, RTC_CNTL_FORCE_DOWNLOAD_BOOT);
542540
} else if (usb_persist_enabled) {

‎cores/esp32/main.cpp

Copy file name to clipboardExpand all lines: cores/esp32/main.cpp
+1Lines changed: 1 addition & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -49,6 +49,7 @@ extern "C" void app_main()
4949
{
5050
#if ARDUINO_SERIAL_PORT //Serial used for USB CDC
5151
USB.begin();
52+
Serial.begin();
5253
#endif
5354
loopTaskWDTEnabled = false;
5455
initArduino();

‎libraries/USB/examples/USBSerial/USBSerial.ino

Copy file name to clipboard
+30-18Lines changed: 30 additions & 18 deletions
Original file line numberDiff line numberDiff line change
@@ -1,21 +1,28 @@
11
#include "USB.h"
2+
3+
#if ARDUINO_SERIAL_PORT
4+
#define HWSerial Serial0
5+
#define USBSerial Serial
6+
#else
7+
#define HWSerial Serial
28
USBCDC USBSerial;
9+
#endif
310

411
static void usbEventCallback(void* arg, esp_event_base_t event_base, int32_t event_id, void* event_data){
512
if(event_base == ARDUINO_USB_EVENTS){
613
arduino_usb_event_data_t * data = (arduino_usb_event_data_t*)event_data;
714
switch (event_id){
815
case ARDUINO_USB_STARTED_EVENT:
9-
Serial.println("USB PLUGGED");
16+
HWSerial.println("USB PLUGGED");
1017
break;
1118
case ARDUINO_USB_STOPPED_EVENT:
12-
Serial.println("USB UNPLUGGED");
19+
HWSerial.println("USB UNPLUGGED");
1320
break;
1421
case ARDUINO_USB_SUSPEND_EVENT:
15-
Serial.printf("USB SUSPENDED: remote_wakeup_en: %u\n", data->suspend.remote_wakeup_en);
22+
HWSerial.printf("USB SUSPENDED: remote_wakeup_en: %u\n", data->suspend.remote_wakeup_en);
1623
break;
1724
case ARDUINO_USB_RESUME_EVENT:
18-
Serial.println("USB RESUMED");
25+
HWSerial.println("USB RESUMED");
1926
break;
2027

2128
default:
@@ -25,24 +32,25 @@ static void usbEventCallback(void* arg, esp_event_base_t event_base, int32_t eve
2532
arduino_usb_cdc_event_data_t * data = (arduino_usb_cdc_event_data_t*)event_data;
2633
switch (event_id){
2734
case ARDUINO_USB_CDC_CONNECTED_EVENT:
28-
Serial.println("CDC CONNECTED");
35+
HWSerial.println("CDC CONNECTED");
2936
break;
3037
case ARDUINO_USB_CDC_DISCONNECTED_EVENT:
31-
Serial.println("CDC DISCONNECTED");
38+
HWSerial.println("CDC DISCONNECTED");
3239
break;
3340
case ARDUINO_USB_CDC_LINE_STATE_EVENT:
34-
Serial.printf("CDC LINE STATE: dtr: %u, rts: %u\n", data->line_state.dtr, data->line_state.rts);
41+
HWSerial.printf("CDC LINE STATE: dtr: %u, rts: %u\n", data->line_state.dtr, data->line_state.rts);
3542
break;
3643
case ARDUINO_USB_CDC_LINE_CODING_EVENT:
37-
Serial.printf("CDC LINE CODING: bit_rate: %u, data_bits: %u, stop_bits: %u, parity: %u\n", data->line_coding.bit_rate, data->line_coding.data_bits, data->line_coding.stop_bits, data->line_coding.parity);
44+
HWSerial.printf("CDC LINE CODING: bit_rate: %u, data_bits: %u, stop_bits: %u, parity: %u\n", data->line_coding.bit_rate, data->line_coding.data_bits, data->line_coding.stop_bits, data->line_coding.parity);
3845
break;
3946
case ARDUINO_USB_CDC_RX_EVENT:
40-
Serial.printf("CDC RX: %u\n", data->rx.len);
47+
HWSerial.printf("CDC RX [%u]:", data->rx.len);
4148
{
4249
uint8_t buf[data->rx.len];
4350
size_t len = USBSerial.read(buf, data->rx.len);
44-
Serial.write(buf, len);
51+
HWSerial.write(buf, len);
4552
}
53+
HWSerial.println();
4654
break;
4755

4856
default:
@@ -51,24 +59,28 @@ static void usbEventCallback(void* arg, esp_event_base_t event_base, int32_t eve
5159
}
5260
}
5361

54-
5562
void setup() {
56-
Serial.begin(115200);
57-
Serial.setDebugOutput(true);
63+
HWSerial.begin(115200);
64+
HWSerial.setDebugOutput(true);
5865

5966
USB.onEvent(usbEventCallback);
67+
USBSerial.onEvent(usbEventCallback);
68+
69+
#if !ARDUINO_SERIAL_PORT
70+
USB.enableDFU();
71+
USB.webUSB(true);
72+
USB.webUSBURL("http://localhost/webusb");
6073
USB.productName("ESP32S2-USB");
6174
USB.begin();
62-
63-
USBSerial.onEvent(usbEventCallback);
6475
USBSerial.begin();
76+
#endif
6577
}
6678

6779
void loop() {
68-
while(Serial.available()){
69-
size_t l = Serial.available();
80+
while(HWSerial.available()){
81+
size_t l = HWSerial.available();
7082
uint8_t b[l];
71-
l = Serial.read(b, l);
83+
l = HWSerial.read(b, l);
7284
USBSerial.write(b, l);
7385
}
7486
}

‎platform.txt

Copy file name to clipboardExpand all lines: platform.txt
+2-2Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -29,7 +29,7 @@ compiler.c.flags.esp32=-mlongcalls -Wno-frame-address -ffunction-sections -fdata
2929
compiler.cpp.flags.esp32=-mlongcalls -Wno-frame-address -ffunction-sections -fdata-sections -Wno-error=unused-function -Wno-error=unused-variable -Wno-error=deprecated-declarations -Wno-unused-parameter -Wno-sign-compare -ggdb -O2 -Wwrite-strings -fstack-protector -fstrict-volatile-bitfields -Wno-error=unused-but-set-variable -fno-jump-tables -fno-tree-switch-conversion -std=gnu++11 -fexceptions -fno-rtti -MMD -c
3030
compiler.S.flags.esp32=-ffunction-sections -fdata-sections -Wno-error=unused-function -Wno-error=unused-variable -Wno-error=deprecated-declarations -Wno-unused-parameter -Wno-sign-compare -ggdb -O2 -Wwrite-strings -fstack-protector -fstrict-volatile-bitfields -Wno-error=unused-but-set-variable -fno-jump-tables -fno-tree-switch-conversion -x assembler-with-cpp -MMD -c
3131
compiler.c.elf.flags.esp32=-T esp32.rom.redefined.ld -T esp32.rom.ld -T esp32.rom.api.ld -T esp32.rom.libgcc.ld -T esp32.rom.newlib-data.ld -T esp32.rom.syscalls.ld -T esp32_out.ld -T esp32.project.ld -T esp32.peripherals.ld -mlongcalls -Wno-frame-address -Wl,--cref -Wl,--gc-sections -fno-rtti -fno-lto -u _Z5setupv -u _Z4loopv -Wl,--wrap=mbedtls_mpi_exp_mod -u esp_app_desc -u pthread_include_pthread_impl -u pthread_include_pthread_cond_impl -u pthread_include_pthread_local_storage_impl -u ld_include_panic_highint_hdl -u start_app -u start_app_other_cores -u __ubsan_include -Wl,--wrap=longjmp -u __assert_func -u vfs_include_syscalls_impl -u call_user_start_cpu0 -Wl,--undefined=uxTopUsedPriority -u app_main -u newlib_include_heap_impl -u newlib_include_syscalls_impl -u newlib_include_pthread_impl -u __cxa_guard_dummy
32-
compiler.ar.flags.esp32=cru
32+
compiler.ar.flags.esp32=cr
3333
build.extra_flags.esp32=-DARDUINO_SERIAL_PORT=0
3434
#
3535
# ESP32 Support End
@@ -44,7 +44,7 @@ compiler.c.flags.esp32s2=-mlongcalls -ffunction-sections -fdata-sections -Wno-er
4444
compiler.cpp.flags.esp32s2=-mlongcalls -ffunction-sections -fdata-sections -Wno-error=unused-function -Wno-error=unused-variable -Wno-error=deprecated-declarations -Wno-unused-parameter -Wno-sign-compare -ggdb -O2 -Wwrite-strings -fstack-protector -fstrict-volatile-bitfields -Wno-error=unused-but-set-variable -fno-jump-tables -fno-tree-switch-conversion -std=gnu++11 -fexceptions -fno-rtti -MMD -c
4545
compiler.S.flags.esp32s2=-ffunction-sections -fdata-sections -Wno-error=unused-function -Wno-error=unused-variable -Wno-error=deprecated-declarations -Wno-unused-parameter -Wno-sign-compare -ggdb -O2 -Wwrite-strings -fstack-protector -fstrict-volatile-bitfields -Wno-error=unused-but-set-variable -fno-jump-tables -fno-tree-switch-conversion -x assembler-with-cpp -MMD -c
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compiler.c.elf.flags.esp32s2=-T esp32s2.rom.ld -T esp32s2.rom.api.ld -T esp32s2.rom.libgcc.ld -T esp32s2.rom.newlib-funcs.ld -T esp32s2.rom.newlib-data.ld -T esp32s2.rom.spiflash.ld -T esp32s2_out.ld -T esp32s2.project.ld -T esp32s2.peripherals.ld -mlongcalls -Wl,--cref -Wl,--gc-sections -fno-rtti -fno-lto -u _Z5setupv -u _Z4loopv -u esp_app_desc -u pthread_include_pthread_impl -u pthread_include_pthread_cond_impl -u pthread_include_pthread_local_storage_impl -u ld_include_panic_highint_hdl -u start_app -u __ubsan_include -Wl,--wrap=longjmp -u __assert_func -u vfs_include_syscalls_impl -u call_user_start_cpu0 -Wl,--undefined=uxTopUsedPriority -u app_main -u newlib_include_heap_impl -u newlib_include_syscalls_impl -u newlib_include_pthread_impl -u __cxa_guard_dummy
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compiler.ar.flags.esp32s2=cru
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compiler.ar.flags.esp32s2=cr
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build.extra_flags.esp32s2=-DARDUINO_SERIAL_PORT={build.serial}
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#
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# ESP32S2 Support End

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