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
150
151
152
153
|
#include "stm32f0_hal.h"
#include "stm32f0_hal_lowlevel.h"
#include "stm32f0xx_hal_rcc.h"
#include "stm32f0xx_hal_gpio.h"
#include "stm32f0xx_hal_dma.h"
#include "stm32f0xx_hal_uart.h"
#include "stm32f0xx_hal_flash.h"
UART_HandleTypeDef UartHandle;
void platform_init(void)
{
/* LEDs */
__HAL_RCC_GPIOA_CLK_ENABLE();
GPIO_InitTypeDef GpioInit;
GpioInit.Pin = GPIO_PIN_2;
GpioInit.Mode = GPIO_MODE_OUTPUT_PP;
GpioInit.Pull = GPIO_NOPULL;
GpioInit.Speed = GPIO_SPEED_FREQ_HIGH;
HAL_GPIO_Init(GPIOA, &GpioInit);
GpioInit.Pin = GPIO_PIN_4;
GpioInit.Mode = GPIO_MODE_OUTPUT_PP;
GpioInit.Pull = GPIO_NOPULL;
GpioInit.Speed = GPIO_SPEED_FREQ_HIGH;
HAL_GPIO_Init(GPIOA, &GpioInit);
HAL_GPIO_WritePin(GPIOA, GPIO_PIN_4, RESET);
HAL_GPIO_WritePin(GPIOA, GPIO_PIN_2, RESET);
#ifdef USE_INTERNAL_CLK
RCC_OscInitTypeDef RCC_OscInitStruct;
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
RCC_OscInitStruct.HSEState = RCC_HSE_OFF;
RCC_OscInitStruct.HSIState = RCC_HSI_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLL_NONE;
HAL_RCC_OscConfig(&RCC_OscInitStruct);
RCC_ClkInitTypeDef RCC_ClkInitStruct;
RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2);
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_HSI;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
uint32_t flash_latency = 0;
HAL_RCC_ClockConfig(&RCC_ClkInitStruct, flash_latency);
#else
RCC_OscInitTypeDef RCC_OscInitStruct;
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE | RCC_OSCILLATORTYPE_HSI;
RCC_OscInitStruct.HSEState = RCC_HSE_BYPASS;
RCC_OscInitStruct.HSIState = RCC_HSI_OFF;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLL_NONE;
HAL_RCC_OscConfig(&RCC_OscInitStruct);
RCC_ClkInitTypeDef RCC_ClkInitStruct;
RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1);
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_HSE;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_0);
#endif
}
void init_uart(void)
{
__HAL_RCC_GPIOA_CLK_ENABLE();
GPIO_InitTypeDef GpioInit;
GpioInit.Pin = GPIO_PIN_9 | GPIO_PIN_10;
GpioInit.Mode = GPIO_MODE_AF_PP;
GpioInit.Pull = GPIO_PULLUP;
GpioInit.Speed = GPIO_SPEED_FREQ_HIGH;
GpioInit.Alternate = GPIO_AF1_USART1;
HAL_GPIO_Init(GPIOA, &GpioInit);
__HAL_RCC_USART1_CLK_ENABLE();
__HAL_RCC_USART1_CONFIG(RCC_USART1CLKSOURCE_SYSCLK);
UartHandle.Instance = USART1;
UartHandle.Init.BaudRate = 115200;
UartHandle.Init.WordLength = UART_WORDLENGTH_8B;
UartHandle.Init.StopBits = UART_STOPBITS_1;
UartHandle.Init.Parity = UART_PARITY_NONE;
UartHandle.Init.HwFlowCtl = UART_HWCONTROL_NONE;
UartHandle.Init.Mode = UART_MODE_TX_RX;
HAL_UART_Init(&UartHandle);
}
static bool trig;
void trigger_setup(void)
{
__HAL_RCC_GPIOA_CLK_ENABLE();
GPIO_InitTypeDef GpioInit;
GpioInit.Pin = GPIO_PIN_7;
GpioInit.Mode = GPIO_MODE_OUTPUT_PP;
GpioInit.Pull = GPIO_NOPULL;
GpioInit.Speed = GPIO_SPEED_FREQ_HIGH;
HAL_GPIO_Init(GPIOA, &GpioInit);
HAL_GPIO_WritePin(GPIOA, GPIO_PIN_7, RESET);
trig = false;
}
bool trigger_status(void)
{
return trig;
}
void trigger_flip(void) {
if (trig) {
trigger_low();
} else {
trigger_high();
}
}
void trigger_high(void)
{
trig = true;
HAL_GPIO_WritePin(GPIOA, GPIO_PIN_7, SET);
}
void trigger_low(void)
{
trig = false;
HAL_GPIO_WritePin(GPIOA, GPIO_PIN_7, RESET);
}
char getch(void)
{
uint8_t d;
while(HAL_UART_Receive(&UartHandle, &d, 1, 50) != HAL_OK)
USART1->ICR |= (1 << 3); // make sure overrun error is cleared, otherwise can stall here
return d;
}
void putch(char c)
{
uint8_t d = c;
HAL_UART_Transmit(&UartHandle, &d, 1, 5000);
}
void led_error(unsigned int status)
{
HAL_GPIO_WritePin(GPIOA, GPIO_PIN_4, status);
}
void led_ok(unsigned int status)
{
HAL_GPIO_WritePin(GPIOA, GPIO_PIN_2, status);
}
|
