输入：
#include "stm32f10x.h" // Device header #include "delay.h"
void pinConfig(void);
void i2c_Master_Config(void);
void sendData(uint8_t data);
int main() {
delay_init();
pinConfig();
i2c_Master_Config();
while(1)
{
uint8_t butonState=GPIOA->IDR & 0x00001000;
sendData(0x68,butonState);
delay_ms(10);
}
}
void pinConfig() {
RCC->APB1ENR |=1<<21;//Enable I2C 1 clock
RCC->APB2ENR |=1<<2;//Enable GPIOA clock
RCC->APB2ENR |=1<<3;//Enable GPIOB clock
RCC->APB2ENR |=1<<0;//Enable AFIO clock
GPIOA->CRL |= 0x00008000; //PA3 button pull-down
GPIOB->CRL = 0xFF000000; //SCL and SDA AF Open Drain SCL => PB6 SDA =>PB7
}
void i2c_Master_Config() {
I2C1->CR2 |=1<<5; //36 Mhz peripheral clock.
I2C1->CR2 |=1<<2; //36 Mhz peripheral clock.
I2C1->CCR =0x28;//100 khz clock
I2C1->TRISE =9;//1/8MHZ= 125 ns => 1000ns/125ns =8 => 8+1 =9
I2C1->CR1 |=(1<<0);//Peripheral enable..
}
void sendData(uint8_t data) {
volatile int temp;
while(I2C1->SR2 &(1<<1));//BUSY bit.
I2C1->CR1 |=1<<8;//START bit.
while(!(I2C1->SR1 & (1<<0))); //wait until start flag is set
I2C1->DR = slaveAdres<<1;//7 bit adress.
while(!(I2C1->SR1 &(1<<1)));//wait until addr flag is set
gecici=I2C1->SR2;//clear addr flag.
I2C1->DR = data;
while (!(I2C1->SR1 & (1<<7))){} //wait until txe is set
while (!(I2C1->SR1 & (1<<2)));//BTF(Byte transfer finished)=1 .
I2C1->CR1 |= 1<<9;//STOP bit.
I2C1->CR1 &=~(1<<0);//Peripheral disable.
}
输出：
#include "stm32f10x.h" // Device header
void pinConfig(void);
void i2c_Slave_Config(void);
uint8_t readData(void);
uint8_t data;
int main()
{
pinConfig();
i2c_Slave_Config();
while(1)
{
data=readData();
if(data==0)
GPIOB->BSRR |=1<<3;
else if(data==1)
GPIOB->BRR |=1<<3;
}
}
void pinConfig()
{
RCC->APB1ENR |=1<<21;//I2C 1 Clock Aktif.
RCC->APB2ENR |=1<<2;//Enable GPIOA clock
RCC->APB2ENR |=1<<3;//Enable GPIOB clock
RCC->APB2ENR |=1<<0;//Enable AFIO clock
GPIOA->CRL |= 0x00002000; //PA3 led.
GPIOB->CRL = 0xFF000000; //SCL and SDA AF Open Drain SCL => PB6 SDA =>PB7
GPIOA->BSRR |=1<<3;//Turn off the led.
}
void i2c_Slave_Config() {
RCC->APB1ENR |=1<<21;//I2C 1 Clock Enable.
I2C1->CR2 |=1<<5; //36 Mhz peripheral clock.
I2C1->CR2 |=1<<2; //36 Mhz peripheral clock.
I2C1->CCR =0x28;//100 khz clock
I2C1->OAR1 &=~(1<<15);//7-bit slave adress.
I2C1 ->CR1 |= 1<<10;//ACK enable.
//0x68 Slave Adress Configured.
I2C1 ->OAR1 &=~(1<<1);
I2C1 ->OAR1 &=~(1<<2);
I2C1 ->OAR1 &=~(1<<3);
I2C1 ->OAR1 &=~(1<<5);
I2C1 ->OAR1 |=(1<<4);
I2C1 ->OAR1 |=(1<<6);
I2C1 ->OAR1 |=(1<<7);
//0x68 Slave Adress Configured.
}
uint8_t readData()
{
volatile int temp;
uint8_t data;
I2C1->CR1 |=(1<<0);//Peripheral enable.
while(I2C1->SR2 &(1<<1));//BUSY bit.
I2C1->CR1 |=1<<8;//START bit.
while(!(I2C1->SR1 & (1<<0))); // wait until start flag is set.
while(!(I2C1->SR1 &(1<<1)));// wait until addr flag is set
temp=I2C1->SR2;//clear addr .
while (!(I2C1->SR1 & (1<<6))){} // wait until rxne is set
data=I2C1->DR;
while (!(I2C1->SR1 & (1<<4))){} // wait until STOPF is set
gecici=I2C1->SR1;
I2C1->SR1 |=1<<9;
I2C1->CR1 &=~(1<<0);//Peripheral disable.
return data;
}
我尝试了以下效果很好的解决方案，但需要知道是否有使用lodash和JS进行此操作的更好方法。
const a = {
"8": [{
"strategy": 123,
"id": 1,
"config": {
"global_dag_conf": {
"algo_v2_conf": {
"features_to_combine": [],
"segments": [],
"force_performance": false,
"min_bid": 0,
"max_bid": 13
}
}
}
}],
"13": [{
"strategy": 456,
"id": 2,
"config": {
"global_dag_conf": {
"algo_v2_conf": {
"ivr_measured": []
}
}
}
}]
}
答案 0 :(得分：1)
使用_.mapValues()来迭代密钥，并使用Array.map()和object destructuring来spread syntax来重新格式化对象：
Dropconst data = {"8":[{"strategy":123,"id":1,"config":{"global_dag_conf":{"algo_v2_conf":{"features_to_combine":[],"segments":[],"force_performance":false,"min_bid":0,"max_bid":13}}}}],"13":[{"strategy":456,"id":2,"config":{"global_dag_conf":{"algo_v2_conf":{"ivr_measured":[]}}}}]}
const result = _.mapValues(data,
arr => arr.map(({ id: algo_id, config }) =>
({ algo_id, ...config })
))
console.log(result)
答案 1 :(得分：1)
这是不使用lodash的解决方案：
Object.entries()来获取键值对数组reduce创建新对象map创建一个新的对象数组。 id和config。 Spread config变量可删除一级嵌套
const input = {"8":[{"strategy":123,"id":1,"config":{"global_dag_conf":{"algo_v2_conf":{"features_to_combine":[],"segments":[],"force_performance":false,"min_bid":0,"max_bid":13}}}}],"13":[{"strategy":456,"id":2,"config":{"global_dag_conf":{"algo_v2_conf":{"ivr_measured":[]}}}}]}
const output =
Object.entries(input)
.reduce((r, [key, value]) => {
r[key] = value.map(({ id, config }) => ({ algo_id: id, ...config }));
return r;
}, {})
console.log(output)
答案 2 :(得分：1)
使用mapValues，map和assign方法的纯Lodash解决方案
let data = {"8":[{"strategy":123,"id":1,"config":{"global_dag_conf":{"algo_v2_conf":{"features_to_combine":[],"segments":[],"force_performance":false,"min_bid":0,"max_bid":13}}}}],"13":[{"strategy":456,"id":2,"config":{"global_dag_conf":{"algo_v2_conf":{"ivr_measured":[]}}}}]};
let res = _.mapValues(data, arr => _.map(arr, obj => _.assign({
'algo_id': obj.id,
'global_dag_conf': obj.config.global_dag_conf
})));
console.log(res);<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.11/lodash.js"></script>
答案 3 :(得分：0)
没有lodash的替代方法。
函数reduce允许生成一个对象，该对象将使用函数map填充，该函数将原始对象转换为所需的结构。
const a = { "8": [{ "strategy": 123, "id": 1, "config": { "global_dag_conf": { "algo_v2_conf": { "features_to_combine": [], "segments": [], "force_performance": false, "min_bid": 0, "max_bid": 13 } } } }], "13": [{ "strategy": 456, "id": 2, "config": { "global_dag_conf": { "algo_v2_conf": { "ivr_measured": [] } } } }] };
let result = Object.entries(a).reduce((a, [key, arr]) => {
return Object.assign(a, {[key]: arr.map(({id: algo_id, config}) => ({algo_id, ...config}))});
}, Object.create(null));
console.log(result);.as-console-wrapper { max-height: 100% !important; top: 0; }