RP2040 support

hw/bsp/raspberry_pi_pico/board_raspberry_pi_pico.c

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+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2020 Raspberry Pi (Trading) Ltd.
+ *
+ * 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.
+ *
+ * This file is part of the TinyUSB stack.
+ */
+
+#include "pico/stdlib.h"
+#include "../board.h"
+
+#ifndef LED_PIN
+#define LED_PIN PICO_DEFAULT_LED_PIN
+#endif
+
+void board_init(void)
+{
+    setup_default_uart();
+    gpio_init(LED_PIN);
+    gpio_set_dir(LED_PIN, 1);
+
+    // Button
+
+    // todo probably set up device mode?
+
+#if TUSB_OPT_HOST_ENABLED
+    // set portfunc to host !!!
+#endif
+}
+
+////--------------------------------------------------------------------+
+//// USB Interrupt Handler
+////--------------------------------------------------------------------+
+//void USB_IRQHandler(void)
+//{
+//#if CFG_TUSB_RHPORT0_MODE & OPT_MODE_HOST
+//    tuh_isr(0);
+//#endif
+//
+//#if CFG_TUSB_RHPORT0_MODE & OPT_MODE_DEVICE
+//    tud_int_handler(0);
+//#endif
+//}
+
+//--------------------------------------------------------------------+
+// Board porting API
+//--------------------------------------------------------------------+
+
+void board_led_write(bool state)
+{
+    gpio_put(LED_PIN, state);
+}
+
+uint32_t board_button_read(void)
+{
+    return 0;
+}
+
+int board_uart_read(uint8_t* buf, int len)
+{
+    for(int i=0;i<len;i++) {
+        buf[i] = uart_getc(uart_default);
+    }
+    return 0;
+}
+
+int board_uart_write(void const * buf, int len)
+{
+//  UART_Send(BOARD_UART_PORT, &c, 1, BLOCKING);
+    for(int i=0;i<len;i++) {
+        uart_putc(uart_default, ((char *)buf)[i]);
+    }
+    return 0;
+}
+
+#if CFG_TUSB_OS == OPT_OS_NONE
+uint32_t board_millis(void)
+{
+    return to_ms_since_boot(get_absolute_time());
+}
+#endif