#77: add BASIC key injection routines

esp32/main/basickey.c

@@ -0,0 +1,46 @@
+#include "basickey.h"
+#include <string.h>
+#include "rom_hook.h"
+
+static uint8_t keylen = 0;
+static uint8_t keypos = 0;
+static uint8_t keybuf[16];
+static int8_t basic_inject_hook = -1;
+
+bool basickey__has_inject(void)
+{
+    return keypos!=keylen;
+}
+
+uint8_t basickey__get_inject()
+{
+    uint8_t v = keybuf[keypos++];
+    if (keypos>=keylen) {
+        // Remove hook
+        if (basic_inject_hook>=0) {
+            rom_hook__remove(basic_inject_hook);
+            basic_inject_hook = -1;
+        }
+    }
+
+    return v;
+}
+
+void basickey__clearinject(void)
+{
+    keypos=0;
+    keylen=0;
+}
+
+void basickey__inject(const uint8_t *keys, unsigned len)
+{
+    // This currently removes everything
+    basickey__clearinject();
+    memcpy(keybuf, keys, len);
+    keylen = len;
+
+    if (basic_inject_hook<0) {
+        basic_inject_hook = rom_hook__add_pre_set(model__get_basic_rom(), 0x0F38, 1); // ED_LOOP
+    }
+
+}

esp32/main/basickey.h

@@ -0,0 +1,22 @@
+#ifndef __BASICKEY_H__
+#define __BASICKEY_H__
+
+#include <stdbool.h>
+#include <inttypes.h>
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+bool basickey__has_inject(void);
+uint8_t basickey__get_inject();
+void basickey__clearinject(void);
+void basickey__inject(const uint8_t *keys, unsigned len);
+void basickey__set_callback( void(*callback)(void) );
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif