Description
Board
ESP32S3 Dev Module
Device Description
ESP32S3 Dev Module
Hardware Configuration
not anything
Version
v2.0.14
IDE Name
Arduino IDE and PlatformIO IDE
Operating System
Windows 10
Flash frequency
80MHz
PSRAM enabled
yes
Upload speed
115200
Description
I attempted to compile a program for ULP counting using C Macros on ESP32S3 with Arduino IDE and PlatformIO IDE (2.0.14), but it did not work on ESP32S3 and threw an error "ulp: program too big: 11 words, max is 0 words". The same program worked fine on ESP32. Later, when I switched the library version to 3.0.0-alpha2, it failed to compile with the error "fatal error: esp32/ulp.h: No such file or directory".
Is the ULP functionality for ESP32S3 not well adapted on Arduino IDE yet? It's worth mentioning that in the latest ESP-IDF version, both ESP32S3 and ESP32 can successfully utilize the ULP functionality.
Sketch
#include <Arduino.h>
#include "esp32s3/ulp.h"
#include "driver/rtc_io.h"
#include "sdkconfig.h"
#define ULP_START_OFFSET 32
void ULP_Initialization()
{
memset(RTC_SLOW_MEM, 0, CONFIG_ESP32S3_ULP_COPROC_RESERVE_MEM);
const ulp_insn_t program[] = {
I_MOVI(R0, 0), // R0 =0
I_MOVI(R1, 0), // R1 = 0;
M_LABEL(1), // do {
// delay(1000);
I_MOVI(R0, 200), // R0 = n * 1000 / 5, where n is the number of seconds to delay, 200 = 1 s
M_LABEL(2), // do {
// delay (5);
// since ULP runs at 8 MHz
// 40000 cycles correspond to 5 ms (max possible delay is 65535 cycles or 8.19 ms)
I_DELAY(40000),
I_SUBI(R0, R0, 1), // R0 --;
M_BGE(2, 1), // } while (R0 >= 1); ... jump to label 2 if R0 > 0
I_ADDI(R1, R1, 1), // R1 ++
// store sample count to RTC_SLOW_MEM [0]
I_ST(R1, 0, 0), // RTC_SLOW_MEM [0] = R1;
I_MOVR(R0, R1),
M_BL(1, 100), // ... jump to label 1 if R0 < 100
I_END(),
};
size_t size = sizeof(program) / sizeof(ulp_insn_t);
ulp_process_macros_and_load(0, program,&size);
ulp_run(0);
// in which it also prints the debug output mentioned earlier
Serial.printf("ULP Mem in main app: %d\n", CONFIG_ESP32S3_ULP_COPROC_RESERVE_MEM);
}
void setup()
{
Serial.begin(115200);
ULP_Initialization();
}
void loop()
{
for (int i = 0; i < 10; i++)
{
Serial.printf("RTC_SLOW_MEM[%d]: %d\n", i, RTC_SLOW_MEM[i] & 0xFFFF);
}
Serial.printf("\n");
delay(1000);
}Debug Message
Build:Mar 27 2021
rst:0x15 (USB_UART_CHIP_RESET),boot:0x8 (SPI_FAST_FLASH_BOOT)
Saved PC:0x4201e66e
SPIWP:0xee
mode:DIO, clock div:1
load:0x3fce3808,len:0x44c
load:0x403c9700,len:0xbd8
load:0x403cc700,len:0x2a80
entry 0x403c98d0
E (2) ulp: program too big: 11 words, max is 0 words
ULP Mem in main app: 0
RTC_SLOW_MEM[0]: 47214
RTC_SLOW_MEM[1]: 0
RTC_SLOW_MEM[2]: 33694
RTC_SLOW_MEM[3]: 0
RTC_SLOW_MEM[4]: 58295
RTC_SLOW_MEM[5]: 50288
RTC_SLOW_MEM[6]: 32486
RTC_SLOW_MEM[7]: 4171
RTC_SLOW_MEM[8]: 38900
RTC_SLOW_MEM[9]: 30073
Other Steps to Reproduce
No response
I have checked existing issues, online documentation and the Troubleshooting Guide
- I confirm I have checked existing issues, online documentation and Troubleshooting guide.