diff options
Diffstat (limited to 'tinyusb/examples/device/audio_4_channel_mic/src')
4 files changed, 770 insertions, 0 deletions
diff --git a/tinyusb/examples/device/audio_4_channel_mic/src/main.c b/tinyusb/examples/device/audio_4_channel_mic/src/main.c new file mode 100755 index 00000000..983b87e5 --- /dev/null +++ b/tinyusb/examples/device/audio_4_channel_mic/src/main.c @@ -0,0 +1,458 @@ +/* + * The MIT License (MIT) + * + * Copyright (c) 2020 Reinhard Panhuber + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + * + */ + +/* plot_audio_samples.py requires following modules: + * $ sudo apt install libportaudio + * $ pip3 install sounddevice matplotlib + * + * Then run + * $ python3 plot_audio_samples.py + */ + +#include <stdlib.h> +#include <stdio.h> +#include <string.h> + +#include "bsp/board.h" +#include "tusb.h" + +//--------------------------------------------------------------------+ +// MACRO CONSTANT TYPEDEF PROTYPES +//--------------------------------------------------------------------+ + +#ifndef AUDIO_SAMPLE_RATE +#define AUDIO_SAMPLE_RATE 48000 +#endif + +/* Blink pattern + * - 250 ms : device not mounted + * - 1000 ms : device mounted + * - 2500 ms : device is suspended + */ +enum { + BLINK_NOT_MOUNTED = 250, + BLINK_MOUNTED = 1000, + BLINK_SUSPENDED = 2500, +}; + +static uint32_t blink_interval_ms = BLINK_NOT_MOUNTED; + +// Audio controls +// Current states +bool mute[CFG_TUD_AUDIO_FUNC_1_N_CHANNELS_TX + 1]; // +1 for master channel 0 +uint16_t volume[CFG_TUD_AUDIO_FUNC_1_N_CHANNELS_TX + 1]; // +1 for master channel 0 +uint32_t sampFreq; +uint8_t clkValid; + +// Range states +audio_control_range_2_n_t(1) volumeRng[CFG_TUD_AUDIO_FUNC_1_N_CHANNELS_TX+1]; // Volume range state +audio_control_range_4_n_t(1) sampleFreqRng; // Sample frequency range state + +// Audio test data +uint16_t i2s_dummy_buffer[CFG_TUD_AUDIO_FUNC_1_N_TX_SUPP_SW_FIFO][CFG_TUD_AUDIO_FUNC_1_TX_SUPP_SW_FIFO_SZ/2]; // Ensure half word aligned + +void led_blinking_task(void); +void audio_task(void); + +/*------------- MAIN -------------*/ +int main(void) +{ + board_init(); + + tusb_init(); + + // Init values + sampFreq = AUDIO_SAMPLE_RATE; + clkValid = 1; + + sampleFreqRng.wNumSubRanges = 1; + sampleFreqRng.subrange[0].bMin = AUDIO_SAMPLE_RATE; + sampleFreqRng.subrange[0].bMax = AUDIO_SAMPLE_RATE; + sampleFreqRng.subrange[0].bRes = 0; + + while (1) + { + tud_task(); // tinyusb device task + led_blinking_task(); + audio_task(); + } + + + return 0; +} + +//--------------------------------------------------------------------+ +// Device callbacks +//--------------------------------------------------------------------+ + +// Invoked when device is mounted +void tud_mount_cb(void) +{ + blink_interval_ms = BLINK_MOUNTED; +} + +// Invoked when device is unmounted +void tud_umount_cb(void) +{ + blink_interval_ms = BLINK_NOT_MOUNTED; +} + +// Invoked when usb bus is suspended +// remote_wakeup_en : if host allow us to perform remote wakeup +// Within 7ms, device must draw an average of current less than 2.5 mA from bus +void tud_suspend_cb(bool remote_wakeup_en) +{ + (void) remote_wakeup_en; + blink_interval_ms = BLINK_SUSPENDED; +} + +// Invoked when usb bus is resumed +void tud_resume_cb(void) +{ + blink_interval_ms = BLINK_MOUNTED; +} + +//--------------------------------------------------------------------+ +// AUDIO Task +//--------------------------------------------------------------------+ + +void audio_task(void) +{ + // Yet to be filled - e.g. put meas data into TX FIFOs etc. + asm("nop"); +} + +//--------------------------------------------------------------------+ +// Application Callback API Implementations +//--------------------------------------------------------------------+ + +// Invoked when audio class specific set request received for an EP +bool tud_audio_set_req_ep_cb(uint8_t rhport, tusb_control_request_t const * p_request, uint8_t *pBuff) +{ + (void) rhport; + (void) pBuff; + + // We do not support any set range requests here, only current value requests + TU_VERIFY(p_request->bRequest == AUDIO_CS_REQ_CUR); + + // Page 91 in UAC2 specification + uint8_t channelNum = TU_U16_LOW(p_request->wValue); + uint8_t ctrlSel = TU_U16_HIGH(p_request->wValue); + uint8_t ep = TU_U16_LOW(p_request->wIndex); + + (void) channelNum; (void) ctrlSel; (void) ep; + + return false; // Yet not implemented +} + +// Invoked when audio class specific set request received for an interface +bool tud_audio_set_req_itf_cb(uint8_t rhport, tusb_control_request_t const * p_request, uint8_t *pBuff) +{ + (void) rhport; + (void) pBuff; + + // We do not support any set range requests here, only current value requests + TU_VERIFY(p_request->bRequest == AUDIO_CS_REQ_CUR); + + // Page 91 in UAC2 specification + uint8_t channelNum = TU_U16_LOW(p_request->wValue); + uint8_t ctrlSel = TU_U16_HIGH(p_request->wValue); + uint8_t itf = TU_U16_LOW(p_request->wIndex); + + (void) channelNum; (void) ctrlSel; (void) itf; + + return false; // Yet not implemented +} + +// Invoked when audio class specific set request received for an entity +bool tud_audio_set_req_entity_cb(uint8_t rhport, tusb_control_request_t const * p_request, uint8_t *pBuff) +{ + (void) rhport; + + // Page 91 in UAC2 specification + uint8_t channelNum = TU_U16_LOW(p_request->wValue); + uint8_t ctrlSel = TU_U16_HIGH(p_request->wValue); + uint8_t itf = TU_U16_LOW(p_request->wIndex); + uint8_t entityID = TU_U16_HIGH(p_request->wIndex); + + (void) itf; + + // We do not support any set range requests here, only current value requests + TU_VERIFY(p_request->bRequest == AUDIO_CS_REQ_CUR); + + // If request is for our feature unit + if ( entityID == 2 ) + { + switch ( ctrlSel ) + { + case AUDIO_FU_CTRL_MUTE: + // Request uses format layout 1 + TU_VERIFY(p_request->wLength == sizeof(audio_control_cur_1_t)); + + mute[channelNum] = ((audio_control_cur_1_t*) pBuff)->bCur; + + TU_LOG2(" Set Mute: %d of channel: %u\r\n", mute[channelNum], channelNum); + return true; + + case AUDIO_FU_CTRL_VOLUME: + // Request uses format layout 2 + TU_VERIFY(p_request->wLength == sizeof(audio_control_cur_2_t)); + + volume[channelNum] = ((audio_control_cur_2_t*) pBuff)->bCur; + + TU_LOG2(" Set Volume: %d dB of channel: %u\r\n", volume[channelNum], channelNum); + return true; + + // Unknown/Unsupported control + default: + TU_BREAKPOINT(); + return false; + } + } + return false; // Yet not implemented +} + +// Invoked when audio class specific get request received for an EP +bool tud_audio_get_req_ep_cb(uint8_t rhport, tusb_control_request_t const * p_request) +{ + (void) rhport; + + // Page 91 in UAC2 specification + uint8_t channelNum = TU_U16_LOW(p_request->wValue); + uint8_t ctrlSel = TU_U16_HIGH(p_request->wValue); + uint8_t ep = TU_U16_LOW(p_request->wIndex); + + (void) channelNum; (void) ctrlSel; (void) ep; + + // return tud_control_xfer(rhport, p_request, &tmp, 1); + + return false; // Yet not implemented +} + +// Invoked when audio class specific get request received for an interface +bool tud_audio_get_req_itf_cb(uint8_t rhport, tusb_control_request_t const * p_request) +{ + (void) rhport; + + // Page 91 in UAC2 specification + uint8_t channelNum = TU_U16_LOW(p_request->wValue); + uint8_t ctrlSel = TU_U16_HIGH(p_request->wValue); + uint8_t itf = TU_U16_LOW(p_request->wIndex); + + (void) channelNum; (void) ctrlSel; (void) itf; + + return false; // Yet not implemented +} + +// Invoked when audio class specific get request received for an entity +bool tud_audio_get_req_entity_cb(uint8_t rhport, tusb_control_request_t const * p_request) +{ + (void) rhport; + + // Page 91 in UAC2 specification + uint8_t channelNum = TU_U16_LOW(p_request->wValue); + uint8_t ctrlSel = TU_U16_HIGH(p_request->wValue); + // uint8_t itf = TU_U16_LOW(p_request->wIndex); // Since we have only one audio function implemented, we do not need the itf value + uint8_t entityID = TU_U16_HIGH(p_request->wIndex); + + // Input terminal (Microphone input) + if (entityID == 1) + { + switch ( ctrlSel ) + { + case AUDIO_TE_CTRL_CONNECTOR: + { + // The terminal connector control only has a get request with only the CUR attribute. + audio_desc_channel_cluster_t ret; + + // Those are dummy values for now + ret.bNrChannels = 1; + ret.bmChannelConfig = 0; + ret.iChannelNames = 0; + + TU_LOG2(" Get terminal connector\r\n"); + + return tud_audio_buffer_and_schedule_control_xfer(rhport, p_request, (void*) &ret, sizeof(ret)); + } + break; + + // Unknown/Unsupported control selector + default: + TU_BREAKPOINT(); + return false; + } + } + + // Feature unit + if (entityID == 2) + { + switch ( ctrlSel ) + { + case AUDIO_FU_CTRL_MUTE: + // Audio control mute cur parameter block consists of only one byte - we thus can send it right away + // There does not exist a range parameter block for mute + TU_LOG2(" Get Mute of channel: %u\r\n", channelNum); + return tud_control_xfer(rhport, p_request, &mute[channelNum], 1); + + case AUDIO_FU_CTRL_VOLUME: + switch ( p_request->bRequest ) + { + case AUDIO_CS_REQ_CUR: + TU_LOG2(" Get Volume of channel: %u\r\n", channelNum); + return tud_control_xfer(rhport, p_request, &volume[channelNum], sizeof(volume[channelNum])); + + case AUDIO_CS_REQ_RANGE: + TU_LOG2(" Get Volume range of channel: %u\r\n", channelNum); + + // Copy values - only for testing - better is version below + audio_control_range_2_n_t(1) + ret; + + ret.wNumSubRanges = 1; + ret.subrange[0].bMin = -90; // -90 dB + ret.subrange[0].bMax = 90; // +90 dB + ret.subrange[0].bRes = 1; // 1 dB steps + + return tud_audio_buffer_and_schedule_control_xfer(rhport, p_request, (void*) &ret, sizeof(ret)); + + // Unknown/Unsupported control + default: + TU_BREAKPOINT(); + return false; + } + break; + + // Unknown/Unsupported control + default: + TU_BREAKPOINT(); + return false; + } + } + + // Clock Source unit + if ( entityID == 4 ) + { + switch ( ctrlSel ) + { + case AUDIO_CS_CTRL_SAM_FREQ: + // channelNum is always zero in this case + switch ( p_request->bRequest ) + { + case AUDIO_CS_REQ_CUR: + TU_LOG2(" Get Sample Freq.\r\n"); + return tud_control_xfer(rhport, p_request, &sampFreq, sizeof(sampFreq)); + + case AUDIO_CS_REQ_RANGE: + TU_LOG2(" Get Sample Freq. range\r\n"); + return tud_control_xfer(rhport, p_request, &sampleFreqRng, sizeof(sampleFreqRng)); + + // Unknown/Unsupported control + default: + TU_BREAKPOINT(); + return false; + } + break; + + case AUDIO_CS_CTRL_CLK_VALID: + // Only cur attribute exists for this request + TU_LOG2(" Get Sample Freq. valid\r\n"); + return tud_control_xfer(rhport, p_request, &clkValid, sizeof(clkValid)); + + // Unknown/Unsupported control + default: + TU_BREAKPOINT(); + return false; + } + } + + TU_LOG2(" Unsupported entity: %d\r\n", entityID); + return false; // Yet not implemented +} + +bool tud_audio_tx_done_pre_load_cb(uint8_t rhport, uint8_t itf, uint8_t ep_in, uint8_t cur_alt_setting) +{ + (void) rhport; + (void) itf; + (void) ep_in; + (void) cur_alt_setting; + + for (uint8_t cnt=0; cnt < CFG_TUD_AUDIO_FUNC_1_N_TX_SUPP_SW_FIFO; cnt++) + { + tud_audio_write_support_ff(cnt, i2s_dummy_buffer[cnt], AUDIO_SAMPLE_RATE/1000 * CFG_TUD_AUDIO_FUNC_1_N_BYTES_PER_SAMPLE_TX * CFG_TUD_AUDIO_FUNC_1_CHANNEL_PER_FIFO_TX); + } + + return true; +} + +bool tud_audio_tx_done_post_load_cb(uint8_t rhport, uint16_t n_bytes_copied, uint8_t itf, uint8_t ep_in, uint8_t cur_alt_setting) +{ + (void) rhport; + (void) n_bytes_copied; + (void) itf; + (void) ep_in; + (void) cur_alt_setting; + + uint16_t dataVal; + + // Generate dummy data + for (uint16_t cnt = 0; cnt < CFG_TUD_AUDIO_FUNC_1_N_TX_SUPP_SW_FIFO; cnt++) + { + uint16_t * p_buff = i2s_dummy_buffer[cnt]; // 2 bytes per sample + dataVal = 1; + for (uint16_t cnt2 = 0; cnt2 < AUDIO_SAMPLE_RATE/1000; cnt2++) + { + for (uint8_t cnt3 = 0; cnt3 < CFG_TUD_AUDIO_FUNC_1_CHANNEL_PER_FIFO_TX; cnt3++) + { + *p_buff++ = dataVal; + } + dataVal++; + } + } + return true; +} + +bool tud_audio_set_itf_close_EP_cb(uint8_t rhport, tusb_control_request_t const * p_request) +{ + (void) rhport; + (void) p_request; + + return true; +} + +//--------------------------------------------------------------------+ +// BLINKING TASK +//--------------------------------------------------------------------+ +void led_blinking_task(void) +{ + static uint32_t start_ms = 0; + static bool led_state = false; + + // Blink every interval ms + if ( board_millis() - start_ms < blink_interval_ms) return; // not enough time + start_ms += blink_interval_ms; + + board_led_write(led_state); + led_state = 1 - led_state; // toggle +} diff --git a/tinyusb/examples/device/audio_4_channel_mic/src/plot_audio_samples.py b/tinyusb/examples/device/audio_4_channel_mic/src/plot_audio_samples.py new file mode 100755 index 00000000..9ab15135 --- /dev/null +++ b/tinyusb/examples/device/audio_4_channel_mic/src/plot_audio_samples.py @@ -0,0 +1,34 @@ +import sounddevice as sd +import matplotlib.pyplot as plt +import numpy as np +import platform + +if __name__ == '__main__': + + # If you got "ValueError: No input device matching", that is because your PC name example device + # differently from tested list below. Uncomment the next line to see full list and try to pick correct one + # print(sd.query_devices()) + + fs = 48000 # Sample rate + duration = 100e-3 # Duration of recording + + if platform.system() == 'Windows': + # WDM-KS is needed since there are more than one MicNode device APIs (at least in Windows) + device = 'Microphone (MicNode_4_Ch), Windows WDM-KS' + elif platform.system() == 'Darwin': + device = 'MicNode_4_Ch' + else: + device ='default' + + myrecording = sd.rec(int(duration * fs), samplerate=fs, channels=4, dtype='int16', device=device) + print('Waiting...') + sd.wait() # Wait until recording is finished + print('Done!') + + time = np.arange(0, duration, 1 / fs) # time vector + plt.plot(time, myrecording) + plt.xlabel('Time [s]') + plt.ylabel('Amplitude') + plt.title('MicNode 4 Channel') + plt.show() +
\ No newline at end of file diff --git a/tinyusb/examples/device/audio_4_channel_mic/src/tusb_config.h b/tinyusb/examples/device/audio_4_channel_mic/src/tusb_config.h new file mode 100755 index 00000000..44be5a0d --- /dev/null +++ b/tinyusb/examples/device/audio_4_channel_mic/src/tusb_config.h @@ -0,0 +1,118 @@ +/* + * The MIT License (MIT) + * + * Copyright (c) 2019 Ha Thach (tinyusb.org) + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + * + */ + +#ifndef _TUSB_CONFIG_H_ +#define _TUSB_CONFIG_H_ + +#ifdef __cplusplus +extern "C" { +#endif + +//-------------------------------------------------------------------- +// COMMON CONFIGURATION +//-------------------------------------------------------------------- + +// defined by compiler flags for flexibility +#ifndef CFG_TUSB_MCU +#error CFG_TUSB_MCU must be defined +#endif + +#if CFG_TUSB_MCU == OPT_MCU_LPC43XX || CFG_TUSB_MCU == OPT_MCU_LPC18XX || CFG_TUSB_MCU == OPT_MCU_MIMXRT10XX +#define CFG_TUSB_RHPORT0_MODE (OPT_MODE_DEVICE | OPT_MODE_HIGH_SPEED) +#else +#define CFG_TUSB_RHPORT0_MODE OPT_MODE_DEVICE +#endif + +#ifndef CFG_TUSB_OS +#define CFG_TUSB_OS OPT_OS_NONE +#endif + +#ifndef CFG_TUSB_DEBUG +#define CFG_TUSB_DEBUG 0 +#endif + +// CFG_TUSB_DEBUG is defined by compiler in DEBUG build +// #define CFG_TUSB_DEBUG 0 + +/* USB DMA on some MCUs can only access a specific SRAM region with restriction on alignment. + * Tinyusb use follows macros to declare transferring memory so that they can be put + * into those specific section. + * e.g + * - CFG_TUSB_MEM SECTION : __attribute__ (( section(".usb_ram") )) + * - CFG_TUSB_MEM_ALIGN : __attribute__ ((aligned(4))) + */ +#ifndef CFG_TUSB_MEM_SECTION +#define CFG_TUSB_MEM_SECTION +#endif + +#ifndef CFG_TUSB_MEM_ALIGN +#define CFG_TUSB_MEM_ALIGN __attribute__ ((aligned(4))) +#endif + +//-------------------------------------------------------------------- +// DEVICE CONFIGURATION +//-------------------------------------------------------------------- + +#ifndef CFG_TUD_ENDPOINT0_SIZE +#define CFG_TUD_ENDPOINT0_SIZE 64 +#endif + +//------------- CLASS -------------// +#define CFG_TUD_CDC 0 +#define CFG_TUD_MSC 0 +#define CFG_TUD_HID 0 +#define CFG_TUD_MIDI 0 +#define CFG_TUD_AUDIO 1 +#define CFG_TUD_VENDOR 0 + +//-------------------------------------------------------------------- +// AUDIO CLASS DRIVER CONFIGURATION +//-------------------------------------------------------------------- + +// Have a look into audio_device.h for all configurations + +#define CFG_TUD_AUDIO_FUNC_1_DESC_LEN TUD_AUDIO_MIC_FOUR_CH_DESC_LEN + +#define CFG_TUD_AUDIO_FUNC_1_N_AS_INT 1 +#define CFG_TUD_AUDIO_FUNC_1_CTRL_BUF_SZ 64 + +#define CFG_TUD_AUDIO_ENABLE_EP_IN 1 +#define CFG_TUD_AUDIO_FUNC_1_N_BYTES_PER_SAMPLE_TX 2 // This value is not required by the driver, it parses this information from the descriptor once the alternate interface is set by the host - we use it for the setup +#define CFG_TUD_AUDIO_FUNC_1_N_CHANNELS_TX 4 // This value is not required by the driver, it parses this information from the descriptor once the alternate interface is set by the host - we use it for the setup +#define CFG_TUD_AUDIO_EP_SZ_IN (48 + 1) * CFG_TUD_AUDIO_FUNC_1_N_BYTES_PER_SAMPLE_TX * CFG_TUD_AUDIO_FUNC_1_N_CHANNELS_TX // 48 Samples (48 kHz) x 2 Bytes/Sample x CFG_TUD_AUDIO_N_CHANNELS_TX Channels - the Windows driver always needs an extra sample per channel of space more, otherwise it complains... found by trial and error +#define CFG_TUD_AUDIO_FUNC_1_EP_IN_SZ_MAX CFG_TUD_AUDIO_EP_SZ_IN +#define CFG_TUD_AUDIO_FUNC_1_EP_IN_SW_BUF_SZ CFG_TUD_AUDIO_EP_SZ_IN + +#define CFG_TUD_AUDIO_ENABLE_ENCODING 1 +#define CFG_TUD_AUDIO_ENABLE_TYPE_I_ENCODING 1 +#define CFG_TUD_AUDIO_FUNC_1_CHANNEL_PER_FIFO_TX 2 // One I2S stream contains two channels, each stream is saved within one support FIFO - this value is currently fixed, the driver does not support a changing value +#define CFG_TUD_AUDIO_FUNC_1_N_TX_SUPP_SW_FIFO (CFG_TUD_AUDIO_FUNC_1_N_CHANNELS_TX / CFG_TUD_AUDIO_FUNC_1_CHANNEL_PER_FIFO_TX) +#define CFG_TUD_AUDIO_FUNC_1_TX_SUPP_SW_FIFO_SZ (CFG_TUD_AUDIO_EP_SZ_IN / CFG_TUD_AUDIO_FUNC_1_N_TX_SUPP_SW_FIFO) + +#ifdef __cplusplus +} +#endif + +#endif /* _TUSB_CONFIG_H_ */ diff --git a/tinyusb/examples/device/audio_4_channel_mic/src/usb_descriptors.c b/tinyusb/examples/device/audio_4_channel_mic/src/usb_descriptors.c new file mode 100755 index 00000000..93ec6e9f --- /dev/null +++ b/tinyusb/examples/device/audio_4_channel_mic/src/usb_descriptors.c @@ -0,0 +1,160 @@ +/* + * The MIT License (MIT) + * + * Copyright (c) 2019 Ha Thach (tinyusb.org) + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + * + */ + +#include "tusb.h" + +/* A combination of interfaces must have a unique product id, since PC will save device driver after the first plug. + * Same VID/PID with different interface e.g MSC (first), then CDC (later) will possibly cause system error on PC. + * + * Auto ProductID layout's Bitmap: + * [MSB] AUDIO | MIDI | HID | MSC | CDC [LSB] + */ +#define _PID_MAP(itf, n) ( (CFG_TUD_##itf) << (n) ) +#define USB_PID (0x4000 | _PID_MAP(CDC, 0) | _PID_MAP(MSC, 1) | _PID_MAP(HID, 2) | \ + _PID_MAP(MIDI, 3) | _PID_MAP(AUDIO, 4) | _PID_MAP(VENDOR, 5) ) + +//--------------------------------------------------------------------+ +// Device Descriptors +//--------------------------------------------------------------------+ +tusb_desc_device_t const desc_device = +{ + .bLength = sizeof(tusb_desc_device_t), + .bDescriptorType = TUSB_DESC_DEVICE, + .bcdUSB = 0x0200, + + // Use Interface Association Descriptor (IAD) for CDC + // As required by USB Specs IAD's subclass must be common class (2) and protocol must be IAD (1) + .bDeviceClass = TUSB_CLASS_MISC, + .bDeviceSubClass = MISC_SUBCLASS_COMMON, + .bDeviceProtocol = MISC_PROTOCOL_IAD, + .bMaxPacketSize0 = CFG_TUD_ENDPOINT0_SIZE, + + .idVendor = 0xCafe, + .idProduct = USB_PID, + .bcdDevice = 0x0100, + + .iManufacturer = 0x01, + .iProduct = 0x02, + .iSerialNumber = 0x03, + + .bNumConfigurations = 0x01 +}; + +// Invoked when received GET DEVICE DESCRIPTOR +// Application return pointer to descriptor +uint8_t const * tud_descriptor_device_cb(void) +{ + return (uint8_t const *) &desc_device; +} + +//--------------------------------------------------------------------+ +// Configuration Descriptor +//--------------------------------------------------------------------+ +enum +{ + ITF_NUM_AUDIO_CONTROL = 0, + ITF_NUM_AUDIO_STREAMING, + ITF_NUM_TOTAL +}; + +#define CONFIG_TOTAL_LEN (TUD_CONFIG_DESC_LEN + CFG_TUD_AUDIO * TUD_AUDIO_MIC_FOUR_CH_DESC_LEN) + +#if CFG_TUSB_MCU == OPT_MCU_LPC175X_6X || CFG_TUSB_MCU == OPT_MCU_LPC177X_8X || CFG_TUSB_MCU == OPT_MCU_LPC40XX +// LPC 17xx and 40xx endpoint type (bulk/interrupt/iso) are fixed by its number +// 0 control, 1 In, 2 Bulk, 3 Iso, 4 In etc ... +#define EPNUM_AUDIO 0x03 +#else +#define EPNUM_AUDIO 0x01 +#endif + +uint8_t const desc_configuration[] = +{ + // Interface count, string index, total length, attribute, power in mA + TUD_CONFIG_DESCRIPTOR(1, ITF_NUM_TOTAL, 0, CONFIG_TOTAL_LEN, TUSB_DESC_CONFIG_ATT_REMOTE_WAKEUP, 100), + + // Interface number, string index, EP Out & EP In address, EP size + TUD_AUDIO_MIC_FOUR_CH_DESCRIPTOR(/*_itfnum*/ ITF_NUM_AUDIO_CONTROL, /*_stridx*/ 0, /*_nBytesPerSample*/ CFG_TUD_AUDIO_FUNC_1_N_BYTES_PER_SAMPLE_TX, /*_nBitsUsedPerSample*/ CFG_TUD_AUDIO_FUNC_1_N_BYTES_PER_SAMPLE_TX*8, /*_epin*/ 0x80 | EPNUM_AUDIO, /*_epsize*/ CFG_TUD_AUDIO_EP_SZ_IN) +}; + +// Invoked when received GET CONFIGURATION DESCRIPTOR +// Application return pointer to descriptor +// Descriptor contents must exist long enough for transfer to complete +uint8_t const * tud_descriptor_configuration_cb(uint8_t index) +{ + (void) index; // for multiple configurations + return desc_configuration; +} + +//--------------------------------------------------------------------+ +// String Descriptors +//--------------------------------------------------------------------+ + +// array of pointer to string descriptors +char const* string_desc_arr [] = +{ + (const char[]) { 0x09, 0x04 }, // 0: is supported language is English (0x0409) + "PaniRCorp", // 1: Manufacturer + "MicNode_4_Ch", // 2: Product + "123458", // 3: Serials, should use chip ID + "UAC2", // 4: Audio Interface +}; + +static uint16_t _desc_str[32]; + +// Invoked when received GET STRING DESCRIPTOR request +// Application return pointer to descriptor, whose contents must exist long enough for transfer to complete +uint16_t const* tud_descriptor_string_cb(uint8_t index, uint16_t langid) +{ + (void) langid; + + uint8_t chr_count; + + if ( index == 0) + { + memcpy(&_desc_str[1], string_desc_arr[0], 2); + chr_count = 1; + }else + { + // Convert ASCII string into UTF-16 + + if ( !(index < sizeof(string_desc_arr)/sizeof(string_desc_arr[0])) ) return NULL; + + const char* str = string_desc_arr[index]; + + // Cap at max char + chr_count = strlen(str); + if ( chr_count > 31 ) chr_count = 31; + + for(uint8_t i=0; i<chr_count; i++) + { + _desc_str[1+i] = str[i]; + } + } + + // first byte is length (including header), second byte is string type + _desc_str[0] = (TUSB_DESC_STRING << 8 ) | (2*chr_count + 2); + + return _desc_str; +} |