描述一下这个bug / Describe the bug
手里有一个ESP32和AIR001的板子，ESP32作主机，AIR001作为从机。ESP32用requestFrom方法，不能正常触发从机AIR001的onRequest注册的方法。但是两个ESP32分别作主机和从机，主机能够正常读取从机的数据。
复现步骤 / To Reproduce
从机先复位，然后主机复位，主机能找到从机的地址，但是不能读到从机的数据。
如果正常，应该是什么样 / Expected behavior
正常ESP32主机能够读取到AIR001从机发过来的数据。
截图 / Screenshots
ESP32主机的代码
`
#include <Wire.h>
byte i = 0;
uint8_t hello[] = "hello";
uint8_t aTxBuffer[] = "你好";
void setup() {
Wire.setClock(100000);
Wire.begin(4, 5);
Serial.begin(9600);
Serial.println("\nI2C Scanner");
byte error, address;
int nDevices;
Serial.println("Scanning...");
nDevices = 0;
for(address = 1; address < 127; address++ ) {
Wire.beginTransmission(address);
// Wire.write(aTxBuffer, sizeof(aTxBuffer));
error = Wire.endTransmission();
if (error == 0) {
Serial.print("I2C device found at address 0x");
if (address<16) {
Serial.print("0");
}
Serial.println(address,HEX);
nDevices++;
}
else if (error==4) {
Serial.print("Unknow error at address 0x");
if (address<16) {
Serial.print("0");
}
Serial.println(address,HEX);
}
}
if (nDevices == 0) {
Serial.println("No I2C devices found\n");
}
else {
Serial.println("done\n");
}
}
void loop() {
byte error;
byte address = 0x33;
int len = Wire.requestFrom((uint16_t) address, (uint8_t) 6);
if (len > 0) {
Serial.printf("接收长度:%d\n", len);
while (Wire.available() > 1) {
char c = Wire.read();
Serial.print(c);
}
char x = Wire.read();
Serial.println(x);
}
Serial.println("");
delay(2000);
}
`
AIR001从机代码
`#include <Wire.h>
#define I2C_ADDR 0x33
uint8_t hello[] = "hello";
uint8_t aTxBuffer[] = "你好";
// function that executes whenever data is received from master
// this function is registered as an event, see setup()
void myReceive(int howMany)
{
while(1 < Wire.available()) // loop through all but the last
{
char c = Wire.read(); // receive byte as a character
Serial.println(c); // print the character
}
int x = Wire.read(); // receive byte as an integer
Serial.println(x); // print the integer
}
// function that executes whenever data is requested by master
// this function is registered as an event, see setup()
void myRequest()
{
Serial.println("收到请求");
Wire.write(0x01); // respond with message of 6 bytes
// as expected by master
}
void setup()
{
Serial.begin(9600); // start serial for output
Wire.setSDA(PF_0);
Wire.setSCL(PF_1);
Wire.setClock(100000);
Wire.begin(I2C_ADDR); // join i2c bus with address #4
Wire.onRequest(myRequest); // register event
Wire.onReceive(myReceive); // register event
}
void loop()
{
//empty loop
}
`
日志 / Logs
这是主机的日志
系统 / System
Win10
PACK包版本 / Version
0.4.5
验证
描述一下这个bug / Describe the bug
手里有一个ESP32和AIR001的板子，ESP32作主机，AIR001作为从机。ESP32用requestFrom方法，不能正常触发从机AIR001的onRequest注册的方法。但是两个ESP32分别作主机和从机，主机能够正常读取从机的数据。
复现步骤 / To Reproduce
从机先复位，然后主机复位，主机能找到从机的地址，但是不能读到从机的数据。
如果正常，应该是什么样 / Expected behavior
正常ESP32主机能够读取到AIR001从机发过来的数据。
截图 / Screenshots
ESP32主机的代码
`
#include <Wire.h>
byte i = 0;
uint8_t hello[] = "hello";
uint8_t aTxBuffer[] = "你好";
void setup() {
Wire.setClock(100000);
Wire.begin(4, 5);
Serial.begin(9600);
Serial.println("\nI2C Scanner");
byte error, address;
int nDevices;
Serial.println("Scanning...");
nDevices = 0;
for(address = 1; address < 127; address++ ) {
Wire.beginTransmission(address);
// Wire.write(aTxBuffer, sizeof(aTxBuffer));
error = Wire.endTransmission();
if (error == 0) {
Serial.print("I2C device found at address 0x");
if (address<16) {
Serial.print("0");
}
Serial.println(address,HEX);
nDevices++;
}
else if (error==4) {
Serial.print("Unknow error at address 0x");
if (address<16) {
Serial.print("0");
}
Serial.println(address,HEX);
}
}
if (nDevices == 0) {
Serial.println("No I2C devices found\n");
}
else {
Serial.println("done\n");
}
}
void loop() {
byte error;
byte address = 0x33;
int len = Wire.requestFrom((uint16_t) address, (uint8_t) 6);
if (len > 0) {
Serial.printf("接收长度:%d\n", len);
while (Wire.available() > 1) {
char c = Wire.read();
Serial.print(c);
}
char x = Wire.read();
Serial.println(x);
}
Serial.println("");
delay(2000);
}
`
AIR001从机代码
`#include <Wire.h>
#define I2C_ADDR 0x33
uint8_t hello[] = "hello";
uint8_t aTxBuffer[] = "你好";
// function that executes whenever data is received from master
// this function is registered as an event, see setup()
void myReceive(int howMany)
{
while(1 < Wire.available()) // loop through all but the last
{
char c = Wire.read(); // receive byte as a character
Serial.println(c); // print the character
}
int x = Wire.read(); // receive byte as an integer
Serial.println(x); // print the integer
}
// function that executes whenever data is requested by master
// this function is registered as an event, see setup()
void myRequest()
{
Serial.println("收到请求");
Wire.write(0x01); // respond with message of 6 bytes
// as expected by master
}
void setup()
{
Serial.begin(9600); // start serial for output
Wire.setSDA(PF_0);
Wire.setSCL(PF_1);
Wire.setClock(100000);
Wire.begin(I2C_ADDR); // join i2c bus with address #4
Wire.onRequest(myRequest); // register event
Wire.onReceive(myReceive); // register event
}
void loop()
{
//empty loop
}
`
日志 / Logs
这是主机的日志
系统 / System
Win10
PACK包版本 / Version
0.4.5
验证