I2C Slave 動作確認

音声認識ボードのI２C slave動作の代わりをEPS 32で試行しました。

youtu.be

コードはこんな感じです。

#define I2C_BUFFER_LENGTH 16

#include "Wire.h"

#define I2C_SDA 14
#define I2C_SCL 12

#define I2C_DEV_ADDR 0x28


uint32_t i = 0;

uint32_t sts_f_req = 0;
uint32_t cmd_f_req = 0;
uint32_t cmd_i = 0;
uint32_t cmd_sed_f = 100;
uint32_t cmd_sed_fast_f = 1;


uint8_t cmd_table[10] = {  26 ,
27  ,
39 ,
41 ,
35 ,
90 ,
23 ,
125  ,
25
};

TwoWire I2CSensors = TwoWire(0);
uint8_t onnseists[3] = { 0x00, 0x00, 0x00 };
uint8_t onnseicmd[2] = { 0x00, 0x00 };
    
void onRequest(){
  if (sts_f_req == 1 ) {
    if (cmd_sed_f != 0 ) {
      onnseicmd[1] = cmd_i  ;
      cmd_sed_f -- ;
      Serial.printf("onRequest sts int in %x",onnseicmd[1]);
      Serial.println("");
    } else {
      onnseicmd[1] = 00 ;
    }
    I2CSensors.slaveWrite(onnseicmd,2);
  }
  if (cmd_f_req == 1 ) { 
    if ( cmd_sed_f != 0 ) {
      onnseists[2] = 0x01 ;
    } else {
      onnseists[2] = 0x00 ;
    }
    I2CSensors.slaveWrite(onnseists,3);
  }
}

void onReceive(int len){
  while(I2CSensors.available()){
    char robi_cmd_data = I2CSensors.read();
    if ( robi_cmd_data == 0x0c ) {
      sts_f_req = 1;
    } else {
      sts_f_req = 0;
    }
    if ( robi_cmd_data == 0x20 ) {
      cmd_f_req = 1;
    } else {
      cmd_f_req = 0;
    }  
  }
  Serial.println();
}

void setup() {
  Serial.begin(115200);
  Serial.setDebugOutput(true);

  I2CSensors.onReceive(onReceive);
  I2CSensors.onRequest(onRequest);
  Serial.println("onXend");
  delay(10000);
  Serial.println("delayend");
  I2CSensors.begin((uint8_t)I2C_DEV_ADDR,I2C_SDA,I2C_SCL,400000);

  Serial.println("setupend");

}

void loop() {
  uint8_t i;
   cmd_i =0 ;
   cmd_sed_f = 100;
   delay(1000);
   for (i=0; i < 10 ; i++ ) {
     cmd_sed_f = 100 ;
     Serial.printf("Robi i2c cmd %d ",cmd_table[i]);
     Serial.println();
     if (cmd_sed_fast_f == 1) {
       cmd_i = cmd_table[i];
       cmd_sed_fast_f =0;
     } else {
       cmd_i = cmd_table[i] ;
     }
     delay(10000);
   }
}

シリアルのログはこんな感じです。

18:53:36.392 -> rst'⸮⸮ (POWERON_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
18:53:36.392 -> configsip: 0, SPIWP:0xee
18:53:36.392 -> clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
18:53:36.426 -> mode:DIO, clock div:1
18:53:36.426 -> load:0x3fff0030,len:1344
18:53:36.426 -> load:0x40078⸮⸮bb⸮⸮⸮13516
18:53:36.426 -> load:0x40080400,len:3604
18:53:36.426 -> entry 0x400805f0
18:53:36.524 -> [⸮⸮mum⸮⸮⸮⸮2-hal-cpu.c:214] setCpuFrequencyMhz(): PLL: 480 / 2 = 240 Mhz, APB: 80000000 Hz
18:53:37.376 -> [   842][I][esp32-hal-psram.c:96] psramInit(): PSRAM enabled
18:53:37.414 -> onXend
18:53:47.401 -> delayend
18:53:47.401 -> [ 10881][I][esp32-hal-i2c-slave.c:234] i2cSlaveInit(): Initialising I2C Slave: sda=14 scl=12 freq=400000, addr=0x28
18:53:47.401 -> [ 10881][D][esp32-hal-i2c-slave.c:498] i2c_slave_set_frequency(): Fifo thresholds: rx_fifo_full = 20, tx_fifo_empty = 12
18:53:47.450 -> setupend
18:53:47.450 -> onRequest sts int in 0
...

18:53:48.430 -> Robi i2c cmd 26 
18:53:48.430 -> 
18:53:48.430 -> 
18:53:48.430 -> onRequest sts int in 1a
18:53:48.430 -> 
18:53:48.430 -> 
18:53:48.430 -> onRequest sts int in 1a
18:53:48.430 -> 
18:53:48.463 -> 
18:53:48.463 -> onRequest sts int in 1a
18:53:48.463 -> 
18:53:48.463 -> 
18:53:48.463 -> onRequest sts int in 1a
18:53:48.463 -> 
18:53:48.498 -> 
18:53:48.498 -> onRequest sts int in 1a
18:53:48.498 -> 
18:53:48.498 -> 
18:53:48.498 -> onRequest sts int in 1a
...

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