rework structure

hifive1-vp/hello/bsp/env/hifive1.h

@@ -0,0 +1,79 @@
+// See LICENSE for license details.
+
+#ifndef _SIFIVE_HIFIVE1_H
+#define _SIFIVE_HIFIVE1_H
+
+#include <stdint.h>
+
+/****************************************************************************
+ * GPIO Connections
+ *****************************************************************************/
+
+// These are the GPIO bit offsets for the RGB LED on HiFive1 Board.
+// These are also mapped to RGB LEDs on the Freedom E300 Arty
+// FPGA
+// Dev Kit.
+
+#define RED_LED_OFFSET   22
+#define GREEN_LED_OFFSET 19
+#define BLUE_LED_OFFSET  21
+
+// These are the GPIO bit offsets for the differen digital pins
+// on the headers for both the HiFive1 Board and the Freedom E300 Arty FPGA Dev Kit.
+#define PIN_0_OFFSET 16
+#define PIN_1_OFFSET 17
+#define PIN_2_OFFSET 18
+#define PIN_3_OFFSET 19
+#define PIN_4_OFFSET 20
+#define PIN_5_OFFSET 21
+#define PIN_6_OFFSET 22
+#define PIN_7_OFFSET 23
+#define PIN_8_OFFSET 0
+#define PIN_9_OFFSET 1
+#define PIN_10_OFFSET 2
+#define PIN_11_OFFSET 3
+#define PIN_12_OFFSET 4
+#define PIN_13_OFFSET 5
+//#define PIN_14_OFFSET 8 //This pin is not connected on either board.
+#define PIN_15_OFFSET 9
+#define PIN_16_OFFSET 10
+#define PIN_17_OFFSET 11
+#define PIN_18_OFFSET 12
+#define PIN_19_OFFSET 13
+
+// These are *PIN* numbers, not
+// GPIO Offset Numbers.
+#define PIN_SPI1_SCK    (13u)
+#define PIN_SPI1_MISO   (12u)
+#define PIN_SPI1_MOSI   (11u)
+#define PIN_SPI1_SS0    (10u)
+#define PIN_SPI1_SS1    (14u) 
+#define PIN_SPI1_SS2    (15u)
+#define PIN_SPI1_SS3    (16u)
+
+#define SS_PIN_TO_CS_ID(x) \
+  ((x==PIN_SPI1_SS0 ? 0 :		 \
+    (x==PIN_SPI1_SS1 ? 1 :		 \
+     (x==PIN_SPI1_SS2 ? 2 :		 \
+      (x==PIN_SPI1_SS3 ? 3 :		 \
+       -1))))) 
+
+
+// These buttons are present only on the Freedom E300 Arty Dev Kit.
+#ifdef HAS_BOARD_BUTTONS
+#define BUTTON_0_OFFSET 15
+#define BUTTON_1_OFFSET 30
+#define BUTTON_2_OFFSET 31
+
+#define INT_DEVICE_BUTTON_0 (INT_GPIO_BASE + BUTTON_0_OFFSET)
+#define INT_DEVICE_BUTTON_1 (INT_GPIO_BASE + BUTTON_1_OFFSET)
+#define INT_DEVICE_BUTTON_2 (INT_GPIO_BASE + BUTTON_2_OFFSET)
+
+#endif
+
+#define HAS_HFXOSC 1
+#define HAS_LFROSC_BYPASS 1
+
+#define RTC_FREQ 32768
+
+#endif /* _SIFIVE_HIFIVE1_H */