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usb_microphone: Add serial ID #32

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usb_microphone: Add serial ID #32

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2 changes: 1 addition & 1 deletion CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -26,7 +26,7 @@ target_include_directories(pico_pdm_microphone INTERFACE

pico_generate_pio_header(pico_pdm_microphone ${CMAKE_CURRENT_LIST_DIR}/src/pdm_microphone.pio)

target_link_libraries(pico_pdm_microphone INTERFACE pico_stdlib hardware_dma hardware_pio)
target_link_libraries(pico_pdm_microphone INTERFACE pico_stdlib hardware_dma hardware_pio pico_unique_id)


add_library(pico_analog_microphone INTERFACE)
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9 changes: 8 additions & 1 deletion examples/usb_microphone/usb_descriptors.c
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Expand Up @@ -23,6 +23,7 @@
*
*/

#include "pico/unique_id.h"
#include "tusb.h"

/* A combination of interfaces must have a unique product id, since PC will save device driver after the first plug.
Expand Down Expand Up @@ -111,13 +112,16 @@ uint8_t const * tud_descriptor_configuration_cb(uint8_t index)
// String Descriptors
//--------------------------------------------------------------------+

// buffer to hold flash ID
char serial[2 * PICO_UNIQUE_BOARD_ID_SIZE_BYTES + 1];

// 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", // 2: Product
"123456", // 3: Serials, should use chip ID
serial, // 3: Serials, should use chip ID
"UAC2", // 4: Audio Interface
};

Expand All @@ -137,6 +141,9 @@ uint16_t const* tud_descriptor_string_cb(uint8_t index, uint16_t langid)
chr_count = 1;
}else
{
// Get unique ID in string format
if (index == 3) pico_get_unique_board_id_string(serial, sizeof(serial));

// Convert ASCII string into UTF-16

if ( !(index < sizeof(string_desc_arr)/sizeof(string_desc_arr[0])) ) return NULL;
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