Cannot reach the low power consumption target

[Aurélien f]

Hello,

I'm starting to use the STM8L family and in particular the STM8L050 MCU. I want to start with low power so i wrote this piece of code :

/* MAIN.C file
 * 
 * Copyright (c) 2002-2005 STMicroelectronics
 */
#include <stdint.h>
#include "stm8l.h"
 
 
#define LED1_PORT    PC
#define LED1_PIN     PIN1
 
#define LED2_PORT    PA
#define LED2_PIN     PIN3
 
#define LED3_PORT    PB
#define LED3_PIN     PIN6
 
#define LED4_PORT    PB
#define LED4_PIN     PIN3
 
/* Simple busy loop delay */
void delay(unsigned long count)
{
    while (count--)
				nop();
}
 
void init_gpio(void)
{
    /* GPIO setup */
/*
    // Set pin data direction as output
    PORT(LED1_PORT, DDR)  |= LED1_PIN; // i.e. PB_DDR |= (1 << 5);
    // Set pin as "Push-pull"
    PORT(LED1_PORT, CR1)  |= LED1_PIN; // i.e. PB_CR1 |= (1 << 5);
*/
    PORT(LED2_PORT, DDR)  |= LED2_PIN; // i.e. PB_DDR |= (1 << 5);
    // Set pin as "Push-pull"
    PORT(LED2_PORT, CR1)  |= LED2_PIN; // i.e. PB_CR1 |= (1 << 5);
		
/*
    PORT(LED3_PORT, DDR)  |= LED3_PIN; // i.e. PB_DDR |= (1 << 5);
    // Set pin as "Push-pull"
    PORT(LED3_PORT, CR1)  |= LED3_PIN; // i.e. PB_CR1 |= (1 << 5);
		
		
    PORT(LED4_PORT, DDR)  |= LED4_PIN; // i.e. PB_DDR |= (1 << 5);
    // Set pin as "Push-pull"
    PORT(LED4_PORT, CR1)  |= LED4_PIN; // i.e. PB_CR1 |= (1 << 5);
*/
}
 
main()
{
		// Secure delay for flashing
		delay(100000L);
	
	
    /* Set clock to full speed (16 Mhz) */
    //CLK_CKDIVR = 0;
 
		init_gpio();
 
		while(1) {
        // LED on
				
        PORT(LED2_PORT, ODR) |= LED2_PIN; // PB_ODR |= (1 << 5);
        delay(10000L);
        // LED off
        PORT(LED2_PORT, ODR) &= ~LED2_PIN; // PB_ODR &= ~(1 << 5);
        delay(10000L);
				
				// enter SLEEP mode 				
				wfi();
    }
}

But it seems to go in sleep mode but i cannot reach the current target. I'm still consuming arround 330mA and i don't know why. Am i missing something with the clock ?

Here is my schematics which is very simple as well. I only soldered the MCU with the decoupling capacitors.

If you have any indication, feel free to share.

Best regards,

Aurélien