tmp

inc/gpib_defs.h

@@ -3,7 +3,7 @@
 
 #include "ch32fun.h"
 
-// #define GPIB_DEBUG 1
+#define GPIB_DEBUG 1
 
 // Control Lines (Active LOW)
 #define PIN_EOI PB3
@@ -153,14 +153,42 @@
 #define GPIB_READ(pin) funDigitalRead(pin)
 
 // Data Lines (DIO1-DIO8)
-#define PIN_DIO1 PB9
-#define PIN_DIO2 PB8
-#define PIN_DIO3 PB5
-#define PIN_DIO4 PB4
-#define PIN_DIO5 PB15
-#define PIN_DIO6 PB14
-#define PIN_DIO7 PB13
-#define PIN_DIO8 PB12
+// #define PIN_DIO1 PB9
+// #define PIN_DIO2 PB8
+// #define PIN_DIO3 PB5
+// #define PIN_DIO4 PB4
+// #define PIN_DIO5 PB15
+// #define PIN_DIO6 PB14
+// #define PIN_DIO7 PB13
+// #define PIN_DIO8 PB12
+
+// Physical Pin mappings on PORT B
+#define PIN_DIO1 9   // PB9
+#define PIN_DIO2 8   // PB8
+#define PIN_DIO3 5   // PB5
+#define PIN_DIO4 4   // PB4
+#define PIN_DIO5 15  // PB15
+#define PIN_DIO6 14  // PB14
+#define PIN_DIO7 13  // PB13
+#define PIN_DIO8 12  // PB12
+
+#define SHIFT_DIO1 (PIN_DIO1 - 0)  // 9
+#define SHIFT_DIO2 (PIN_DIO2 - 1)  // 7
+#define SHIFT_DIO3 (PIN_DIO3 - 2)  // 3
+#define SHIFT_DIO4 (PIN_DIO4 - 3)  // 1
+#define SHIFT_DIO5 (PIN_DIO5 - 4)  // 11
+#define SHIFT_DIO6 (PIN_DIO6 - 5)  // 9
+#define SHIFT_DIO7 (PIN_DIO7 - 6)  // 7
+#define SHIFT_DIO8 (PIN_DIO8 - 7)  // 5
+
+// pins that share the same shift amount
+// Group A: shift right 9 (PB9->Bit0, PB14->Bit5)
+#define MASK_GROUP_A ((1 << 0) | (1 << 5))
+// Group B: shift right 7 (PB8->Bit1, PB13->Bit6)
+#define MASK_GROUP_B ((1 << 1) | (1 << 6))
+
+#define CALC_PIN_BSHR(val, bit_idx, pin_num) \
+  ((val & (1 << bit_idx)) ? (1U << (pin_num + 16)) : (1U << pin_num))
 
 #define MASK_DIO1 (1U << 9)
 #define MASK_DIO2 (1U << 8)
@@ -171,7 +199,7 @@
 #define MASK_DIO7 (1U << 13)
 #define MASK_DIO8 (1U << 12)
 
-static const int DIO_PINS[] = {PIN_DIO1, PIN_DIO2, PIN_DIO3, PIN_DIO4,
-                               PIN_DIO5, PIN_DIO6, PIN_DIO7, PIN_DIO8};
+// static const int DIO_PINS[] = {PIN_DIO1, PIN_DIO2, PIN_DIO3, PIN_DIO4,
+//                                PIN_DIO5, PIN_DIO6, PIN_DIO7, PIN_DIO8};
 
 #endif