initial import from picomap firmware

w6300/w6300.h

@@ -0,0 +1,52 @@
+#pragma once
+#include <array>
+#include <cstdint>
+#include <expected>
+#include <span>
+
+namespace w6300 {
+
+enum class socket_id : uint8_t {};
+
+enum class sock_error : int16_t {
+    busy           =     0,
+    sock_num       =    -1,
+    sock_closed    =    -4,
+    sock_mode      =    -5,
+    arg            =   -10,
+    timeout        =   -13,
+    data_len       =   -14,
+    fatal_packlen  = -1001,
+};
+
+enum class protocol : uint8_t {
+    macraw    = 0x07,
+};
+
+enum class sock_flag : uint8_t {
+    none            = 0,
+};
+
+enum intr_kind : uint32_t {
+    ik_sock_0 = (1 << 8),
+    ik_int_all = 0x00FFFF97
+};
+
+void init_spi();
+void reset();
+void init();
+bool check();
+
+extern volatile bool irq_pending;
+
+void clear_interrupt(intr_kind intr);
+void set_interrupt_mask(intr_kind intr);
+void rearm_gpio_irq();
+
+std::expected<socket_id, sock_error> open_socket(socket_id sn, protocol proto, sock_flag flag);
+std::expected<uint16_t, sock_error> send(socket_id sn, std::span<const uint8_t> buf);
+std::expected<uint16_t, sock_error> recv(socket_id sn, std::span<uint8_t> buf);
+
+uint16_t get_socket_recv_buf(socket_id sn);
+
+} // namespace w6300