arm: async echo app

2022-05-16 20:56:25 -07:00
parent 30d9a2d7c8
commit 932b8d4582
25 changed files with 3043 additions and 29 deletions
--- a/arm/gpio.h
+++ b/arm/gpio.h
@@ -7,3 +7,21 @@ struct Gpio {
 };

 #define gpio0 ((Gpio*) 0x40000000)
+
+inline void ToggleLed(int which) {
+    uint8_t data = gpio0->data;
+    data ^= (0x1 << which);
+    gpio0->data = data;
+}
+
+inline void SetLed(int which) {
+    uint8_t data = gpio0->data;
+    data |= (0x1 << which);
+    gpio0->data = data;
+}
+
+inline void ClearLed(int which) {
+    uint8_t data = gpio0->data;
+    data &= ~(0x1 << which);
+    gpio0->data = data;
+}