start to add pio usb (host) support

run as proof of concept
2022-03-01 23:55:53 +07:00
parent c9b0fbc907
commit 1d29817139
10 changed files with 300 additions and 13 deletions
@@ -127,6 +127,9 @@ void board_init(void)
 #ifndef BUTTON_BOOTSEL
 #endif

+  // Set the system clock to a multiple of 120mhz for bitbanging USB with pico-usb
+  set_sys_clock_khz(120000, true);
+
 #if defined(UART_DEV) && defined(LIB_PICO_STDIO_UART)
  bi_decl(bi_2pins_with_func(UART_TX_PIN, UART_TX_PIN, GPIO_FUNC_UART));
  uart_inst = uart_get_instance(UART_DEV);