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add board_get_unique_id() for serial number

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implemented board_get_unique_id() for rp2040 and L4
This commit is contained in:
hathach
2023-08-03 20:42:34 +07:00
parent 1324c2862d
commit 041f510f90
6 changed files with 126 additions and 64 deletions
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40
hw/bsp/board_api.h
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@@ -60,12 +60,13 @@ void board_led_write(bool state);
// a '1' means active (pressed), a '0' means inactive.
uint32_t board_button_read(void);
// Get characters from UART
// Return number of read bytes
// Get board unique ID for USB serial number. Return number of bytes. Note max_len is typically 16
TU_ATTR_WEAK size_t board_get_unique_id(uint8_t id[], size_t max_len);
// Get characters from UART. Return number of read bytes
int board_uart_read(uint8_t *buf, int len);
// Send characters to UART
// Return number of sent bytes
// Send characters to UART. Return number of sent bytes
int board_uart_write(void const *buf, int len);
#if CFG_TUSB_OS == OPT_OS_NONE
@@ -108,6 +109,37 @@ static inline void board_led_off(void) {
board_led_write(false);
}
// Get USB Serial number string from unique ID if available. Return number of character.
// Input is string descriptor from index 1 (index 0 is type + len)
static inline size_t board_usb_get_serial(uint16_t desc_str1[], size_t max_chars) {
uint8_t serial_id[16] TU_ATTR_ALIGNED(4);
size_t serial_len;
if ( board_get_unique_id ) {
serial_len = board_get_unique_id(serial_id, sizeof(serial_id));
}else {
// fixed serial string is 01234567889ABCDEF
*((uint32_t*)(uintptr_t) serial_id) = 0x67452301;
*((uint32_t*)(uintptr_t) (serial_id+4)) = 0xEFCDAB89;
serial_len = 8;
}
if ( serial_len > max_chars / 2 ) serial_len = max_chars / 2;
for ( size_t i = 0; i < serial_len; i++ ) {
for ( size_t j = 0; j < 2; j++ ) {
const char nibble_to_hex[16] = {
'0', '1', '2', '3', '4', '5', '6', '7',
'8', '9', 'A', 'B', 'C', 'D', 'E', 'F'
};
uint8_t const nibble = (serial_id[i] >> (j * 4)) & 0xf;
desc_str1[i * 2 + (1 - j)] = nibble_to_hex[nibble]; // UTF-16-LE
}
}
return 2*serial_len;
}
// TODO remove
static inline void board_delay(uint32_t ms) {
uint32_t start_ms = board_millis();