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
|
/******************************************************************************
* The MIT License
*
* Copyright (c) 2010 Perry Hung.
*
* 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 generic maple board bring up:
*
* By default, we bring up all maple boards running on the stm32 to 72mhz,
* clocked off the PLL, driven by the 8MHz external crystal.
*
* AHB and APB2 are clocked at 72MHz
* APB1 is clocked at 36MHz
*/
#include "wirish.h"
#include "systick.h"
#include "gpio.h"
#include "nvic.h"
#include "usb.h"
#include "rcc.h"
#include "fsmc.h"
#include "dac.h"
#include "flash.h"
void init(void) {
/* make sure the flash is ready before spinning the high speed clock up */
flash_enable_prefetch();
flash_set_latency(FLASH_WAIT_STATE_2);
#if NR_FSMC > 0
fsmc_native_sram_init();
#endif
#if NR_DAC_PINS > 0
dac_init();
#endif
/* initialize clocks */
rcc_clk_init(RCC_CLKSRC_PLL, RCC_PLLSRC_HSE, RCC_PLLMUL_9);
rcc_set_prescaler(RCC_PRESCALER_AHB, RCC_AHB_SYSCLK_DIV_1);
rcc_set_prescaler(RCC_PRESCALER_APB1, RCC_APB1_HCLK_DIV_2);
rcc_set_prescaler(RCC_PRESCALER_APB2, RCC_APB2_HCLK_DIV_1);
nvic_init();
systick_init(SYSTICK_RELOAD_VAL);
gpio_init();
/* Initialize the ADC for slow conversions, to allow for high
impedance inputs. */
adc_init(ADC_SMPR_55_5);
timer_init(TIMER1, 1);
timer_init(TIMER2, 1);
timer_init(TIMER3, 1);
timer_init(TIMER4, 1);
#if NR_TIMERS >= 8
timer_init(TIMER5, 1);
timer_init(TIMER8, 1);
#endif
setupUSB();
/* include the board-specific init macro */
BOARD_INIT;
}
|
