本项目为复刻项目，参考的原项目为：ShaderFallback/CpuRamGet: Esp32 monitor client (github.com)和基于STM32的电脑状态显示仪 - 立创EDA开源硬件平台 (oshwhub.com)
继承许可为GPLv3，继承原作者不可商用
PWM输出未接在CH571硬件PWM上。可使用CH573或使用软件模拟PWM。
当前PCB已修改为TIM脚位，但程序还是根据原管脚编写。两个版本的PCB详见附件。
- 使用CH571，降低成本
- 重新设计外壳，提高角度，观看数据更加舒适
- 增加灯条（虽然实际效果emmm）
- USB CDC虚拟串口
- 串口解析AIDA64字符串
- PWM输出数据至电压表
- LED灯逻辑：串口接收到可解析的字符串后亮起30s
- 蓝牙串口
- MRS支持
- 显示指针控制算法
机械部分使用SW2020绘制的外壳，做了无支撑打印的优化。
电气部分使用CH571作为主控，降低了成本，同时也带有一个蓝牙，可以通过蓝牙连接设备进行串口数据的传输。
程序主要分为USB接收解析字符串、PWM输出、灯条控制等。
USB部分主要根据沁恒的CDC例程。（这例程居然得去论坛找。。。）主要修改USB
len = ring_buffer_num_items(&usb_to_uart_rb);
if (len != 0) {
ring_buffer_dequeue_arr(&usb_to_uart_rb, recBuf, len);
// 以%结尾解析
for (uint8_t i = 0; i < len; i++) {
if (recBuf[i] != '%') {
if (processLen < 64) {
processString[processLen] = recBuf[i];
processLen++;
} else {
processLen = 0;
memset(processString, 0, sizeof(processString));
}
} else {
// processString应为" CPU/RAM XXX"
// 如读取错误，processString应为"PU XXX" "XXX"等
// 提取数字思路：从最后开始提取
processLen--;
if (strstr(processString, "CPU") != NULL) {
uint8_t num = 0;
uint8_t numLen = 0;
while (('0' <= processString[processLen - numLen]) &&
(processString[processLen - numLen] <= '9')) {
num += (processString[processLen - numLen] - '0') * pow_u8(10, numLen);
numLen++;
if (numLen == 3) {
break;
}
}
log_printf("CPU:%d\r\n", (int) num);
Monitor_Set_Usage(0, num);
LED_Update();
processLen = 0;
memset(processString, 0, sizeof(processString));
} else if (strstr(processString, "RAM") != NULL) {
uint8_t num = 0;
uint8_t numLen = 0;
while (('0' <= processString[processLen - numLen]) &&
(processString[processLen - numLen] <= '9')) {
num += (processString[processLen - numLen] - '0') * pow_u8(10, numLen);
numLen++;
if (numLen == 3) {
break;
}
}
log_printf("RAM:%d\r\n", (int) num);
Monitor_Set_Usage(1, num);
LED_Update();
processLen = 0;
memset(processString, 0, sizeof(processString));
} else {
processLen = 0;
memset(processString, 0, sizeof(processString));
}
}
}
}PWM使用一个定时器模拟输出
// 启用均值滤波
#define MEAN_FILTERING
#define COUNT_MAX 200
#define PWM_FREQ 100
uint16_t compare0, compare1;
uint16_t count;
void Monitor_PWM_Init() {
compare0 = compare1 = 0;
count = 0;
// 初始化GPIO
GPIOA_ModeCfg(MONITOR_CH0_Pin, GPIO_ModeOut_PP_20mA); // PA12
GPIOA_ModeCfg(MONITOR_CH1_Pin, GPIO_ModeOut_PP_20mA); // PA13
Monitor_Set_Usage(0, 10);
Monitor_Set_Usage(1, 10);
// 初始化定时器
TMR0_TimerInit(FREQ_SYS / COUNT_MAX / PWM_FREQ); // 设置定时时间 1s/100/200
TMR0_ITCfg(ENABLE, TMR0_3_IT_CYC_END); // 开启中断
PFIC_EnableIRQ(TMR0_IRQn);
}
// ch为通道，0为前表PA12，1为后表PA13
// occupy为百分比，0-100
void Monitor_Set_Usage(uint8_t ch, uint16_t usage) {
if (usage == 0) {
usage++;
}
if (usage > 100) {
return;
}
#ifdef MEAN_FILTERING
static uint16_t usage_pp_ch0 = 0, usage_p_ch0 = 0;
static uint16_t usage_pp_ch1 = 0, usage_p_ch1 = 0;
if (ch == 0) {
usage = (usage * 7 + usage_pp_ch0 * 1 + usage_p_ch0 * 2) / 10;
usage_pp_ch0 = usage_p_ch0;
usage_p_ch0 = usage;
log_printf("ch0:%d,%d,%d", usage, usage_p_ch0, usage_pp_ch0);
} else if (ch == 1) {
usage = (usage * 7 + usage_pp_ch1 * 1 + usage_p_ch1 * 2) / 10;
usage_pp_ch1 = usage_p_ch1;
usage_p_ch1 = usage;
log_printf("ch1:%d,%d,%d", usage, usage_p_ch1, usage_pp_ch1);
}
#endif
usage > 100 ? usage = 100 : usage;
if (ch == 0) {
compare0 = (uint16_t) (usage * COUNT_MAX * 3 / 3.3 / 100);
} else if (ch == 1) {
compare1 = (uint16_t) (usage * COUNT_MAX * 3 / 3.3 / 100);
}
}
__attribute__((interrupt("WCH-Interrupt-fast")))
__attribute__((section(".highcode")))
void TMR0_IRQHandler(void) { // TMR0 定时中断
if (TMR0_GetITFlag(TMR0_3_IT_CYC_END)) {
TMR0_ClearITFlag(TMR0_3_IT_CYC_END); // 清除中断标志
count++;
if (count == compare0) {
GPIOA_ResetBits(MONITOR_CH0_Pin);
}
if (count == compare1) {
GPIOA_ResetBits(MONITOR_CH1_Pin);
}
if (count == COUNT_MAX) {
count = 0;
GPIOA_SetBits(MONITOR_CH0_Pin | MONITOR_CH1_Pin);
}
}
}灯条使用一个定时器计数，串口解析成功数据后清空计数
uint32_t ledSleep_count = 0;
#define SLEEP_TIME_S 30
void LED_Init() {
GPIOB_ModeCfg(LED_Pin, GPIO_ModeOut_PP_20mA);
LED_On();
TMR1_TimerInit(FREQ_SYS / 100); // 设置定时时间 1s/100
TMR1_ITCfg(ENABLE, TMR0_3_IT_CYC_END); // 开启中断
PFIC_EnableIRQ(TMR1_IRQn);
LED_Update();
}
void LED_Update(){
LED_On();
ledSleep_count = 0;
}
__attribute__((interrupt("WCH-Interrupt-fast")))
__attribute__((section(".highcode")))
void TMR1_IRQHandler(void) { // TMR1 定时中断
if (TMR1_GetITFlag(TMR0_3_IT_CYC_END)) {
TMR1_ClearITFlag(TMR0_3_IT_CYC_END); // 清除中断标志
ledSleep_count++;
if (ledSleep_count >= (SLEEP_TIME_S * 100)) {
ledSleep_count = 0;
LED_Off();
}
}
}
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