1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
|
/* *****************************************************************************
* The MIT License
*
* Copyright (c) 2010 LeafLabs LLC.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
* ****************************************************************************/
/**
* @brief Sample main.cpp file. Sends "Hello world!" out SPI1.
*
* SPI1 is set up to be a master transmitter at 4.5MHz, little endianness,
* and SPI mode 0.
*
* Pin 10 is used as Chip Select
*
*/
#include "wirish.h"
#include "fsmc.h"
#include "rcc.h"
#include "gpio.h"
#define LED_PIN 23
#define DISC_PIN 14
// System control block registers
#define SCB_BASE (SCB_Reg*)(0xE000ED00)
typedef struct {
volatile uint32 CPUID;
volatile uint32 ICSR;
volatile uint32 VTOR;
volatile uint32 AIRCR;
volatile uint32 SCR;
volatile uint32 CCR;
volatile uint32 SHPR1;
volatile uint32 SHPR2;
volatile uint32 SHPR3;
volatile uint32 SHCRS;
volatile uint32 CFSR;
volatile uint32 HFSR;
uint32 pad1;
volatile uint32 MMAR;
volatile uint32 BFAR;
} SCB_Reg;
SCB_Reg *scb;
uint16 *ptr;
int toggle = 0;
void setup() {
uint32 id;
scb = (SCB_Reg*)SCB_BASE;
rcc_enable_clk_fsmc();
pinMode(LED_PIN, OUTPUT);
pinMode(DISC_PIN, OUTPUT);
digitalWrite(DISC_PIN,1);
digitalWrite(LED_PIN,1);
Serial1.begin(9600);
Serial1.println("Hello World!");
Serial1.print("Init... ");
fsmc_native_sram_init();
Serial1.println("Done.");
ptr = (uint16*)(0x60000000);
//ptr = (uint16*)(0x68000000);
//ptr = (uint16*)(0x80000000);
Serial1.print("Writing... ");
*ptr = 0xFFFF;
Serial1.println("Done.");
Serial1.print("Reading... ");
id = *ptr;
Serial1.print("Done: ");
Serial1.println(id,BIN);
/*
Serial1.print("CPUID is at: ");
id = (uint32)(&(scb->CPUID));
Serial1.println(id,BIN);
*/
Serial1.print("CPUID: ");
id = scb->CPUID;
Serial1.println(id,BIN);
Serial1.print("ICSR: ");
id = scb->ICSR;
Serial1.println(id,BIN);
Serial1.print("CFSR: ");
id = scb->CFSR;
Serial1.println(id,BIN);
Serial1.print("HFSR: ");
id = scb->HFSR;
Serial1.println(id,BIN);
Serial1.print("MMAR: ");
id = scb->MMAR;
Serial1.println(id,BIN);
Serial1.print("BFAR: ");
id = scb->BFAR;
Serial1.println(id,BIN);
}
void loop() {
digitalWrite(LED_PIN, toggle);
toggle ^= 1;
delay(100);
*ptr = 0xFFFF;
/*
Serial1.print((uint32)(ptr),HEX);
Serial1.print(": ");
Serial1.println(*ptr,BIN);
*/
}
int main(void) {
init();
setup();
while (1) {
loop();
}
return 0;
}
|
