GPIO wake-up and sleep

Question

Dear Dialog Support, 
 
 I am testing the example ble_app_peripheral in SDK_6.0.18.1182.1. I want to realize the following function: 
 
 Once DA14531 is powered on, it enters into the extended sleep mode. When the button is pressed down once, DA14531 wakes up and the functions of the original example ble_app_peripheral can normally perform. And when the button is pressed down once again, DA14531 enters into the extended sleep mode again, and so on. 
 Could you please show me how to achieve this. Thanks a lot!

Nick Long · Accepted Answer

Dear OV, 
 Thanks for your reply. 
 I found the second video was just invalid, and now I updated it. You can see from it that I can only put DA14531 into sleep mode but cannot pull it back to the active state. This is the main problem I need your help now. 
 About the sleep current issue, I found why the sleep current is around 17uA. I just made a stupid mistake. I forgot there is a serial communication CH340 IC on my board, and it consume around 15uA. Sorry about that. 
 Best regards, 
 Nick

OV_Renesas · Answer

Hi Nick, Thank you for posting your question online. Please find attached the ble_app_peripheral_wakeup.zip file. I worked on SDK v6.0.18 with the DA14531MOD and the Dev Kit Pro. I configured the P0_11 as my button and whenever I press the button I get into Extended sleep mode or exit Extended Sleep Mode. Please refer to this project for your implementation. 
 
 Best Regards, OV_Renesas ble_app_peripheral_wakeup.zip

OV_Renesas · Answer

Dear Nick, Thank you for the reply. 
 Nick Long said: Could you please tell me which part you modified in the example ble_app_peripheral, so that I could learn from it 
 I worked based on the implementation on the prox_reporter example. On user_peripheral.c file the main changes are: 
/**
 ****************************************************************************************
 * @brief Button press callback function. Registered in WKUPCT driver.
 ****************************************************************************************
 */
static void app_button_press_cb(void)
{
	//GO into active mode without extended sleep mode
 arch_set_sleep_mode(ARCH_SLEEP_OFF);
// configure the wake-up controller for P0_11 
 app_button_enable2();
}

void app_button_enable(void)
{
	//Set the wake-up controller callback to leave Extended Sleep
 wkupct_register_callback(app_button_press_cb);


 wkupct_enable_irq(WKUPCT_PIN_SELECT(GPIO_BUTTON_PORT, GPIO_BUTTON_PIN), // select pin (GPIO_BUTTON_PORT, GPIO_BUTTON_PIN)
 WKUPCT_PIN_POLARITY(GPIO_BUTTON_PORT, GPIO_BUTTON_PIN, WKUPCT_PIN_POLARITY_LOW), // polarity low
 1, // 1 event
 0); // debouncing time = 0
 
}


static void go_to_sleep(void)
{
// Go to extended sleep without OTP copy
	arch_set_extended_sleep(false);
//Initialize the Wake-up contoller to trigger an interrupt on P0_11
 app_button_enable();
}

//Configure the Wake-Up controller for button (P0_11) interrupt and trigger the wake-up controller callback to go into Extended Sleep.
void app_button_enable2(void)
{
 //Set the wake-up controller callback to go to extended sleep
 wkupct_register_callback(go_to_sleep);


 wkupct_enable_irq(WKUPCT_PIN_SELECT(GPIO_BUTTON_PORT, GPIO_BUTTON_PIN), // select pin (GPIO_BUTTON_PORT, GPIO_BUTTON_PIN)
 WKUPCT_PIN_POLARITY(GPIO_BUTTON_PORT, GPIO_BUTTON_PIN, WKUPCT_PIN_POLARITY_LOW), // polarity low
 1, // 1 event
 0); // debouncing time = 0
 
} The initial call to configure the Wake Up controller is on user_app_init custom callback function. Also, on the user_periph_setup.h/c files I configured the P0_11 as a Button. Best Regards, OV_Renesas

OV_Renesas · Answer

Dear Nick, Thank you for the reply. From the video you shared I can see that you are downloading the firmware into the RAM of the DA14531. Could you please download the firmware into the SPI Flash and test again? There could be also leakage current from the custom board. Have you made sure you have calibrated the tool you are using for current measurements so it will only get the DA14531 current consumption? P.S. I really enjoyed the birds chirping in the background . Best Regards, OV_Renesas

OV_Renesas · Answer

Hi Nick, Thank you for the reply. By default, I used the DA14531MOD which has the P25Q11U part number. On user_periph_setup.h file please add the following: 
/****************************************************************************************/
/* SPI configuration */
/****************************************************************************************/
// Define SPI Pads
#if defined (__DA14531__)
 #define SPI_EN_PORT GPIO_PORT_0
 #define SPI_EN_PIN GPIO_PIN_1

 #define SPI_CLK_PORT GPIO_PORT_0
 #define SPI_CLK_PIN GPIO_PIN_4

 #define SPI_DO_PORT GPIO_PORT_0
 #define SPI_DO_PIN GPIO_PIN_0

 #define SPI_DI_PORT GPIO_PORT_0
 #define SPI_DI_PIN GPIO_PIN_3

#elif !defined (__DA14586__)
 #define SPI_EN_PORT GPIO_PORT_0
 #define SPI_EN_PIN GPIO_PIN_3

 #define SPI_CLK_PORT GPIO_PORT_0
 #define SPI_CLK_PIN GPIO_PIN_0

 #define SPI_DO_PORT GPIO_PORT_0
 #define SPI_DO_PIN GPIO_PIN_6

 #define SPI_DI_PORT GPIO_PORT_0
 #define SPI_DI_PIN GPIO_PIN_5
#endif

/***************************************************************************************/
/* Production debug output configuration */
/***************************************************************************************/
#if PRODUCTION_DEBUG_OUTPUT
#if defined (__DA14531__)
 #define PRODUCTION_DEBUG_PORT GPIO_PORT_0
 #define PRODUCTION_DEBUG_PIN GPIO_PIN_11
#else
 #define PRODUCTION_DEBUG_PORT GPIO_PORT_2
 #define PRODUCTION_DEBUG_PIN GPIO_PIN_5
#endif
#endif

// Define SPI Configuration
 #define SPI_MS_MODE SPI_MS_MODE_MASTER
 #define SPI_CP_MODE SPI_CP_MODE_0
 #define SPI_WSZ SPI_MODE_8BIT
 #define SPI_CS SPI_CS_0

#if defined(__DA14531__)
 #define SPI_SPEED_MODE SPI_SPEED_MODE_4MHz
 #define SPI_EDGE_CAPTURE SPI_MASTER_EDGE_CAPTURE
#else // (DA14585, DA14586)
 #define SPI_SPEED_MODE SPI_SPEED_MODE_4MHz
#endif
#if !defined (__DA14586__)
#define SPI_FLASH_DEV_SIZE (512 * 1024)	//for P25Q40 4Mb
#endif
 Please modify the SPI pins based on your board. And on user_periph_setup.c file: /**
 ****************************************************************************************
 *
 * @file user_periph_setup.c
 *
 * @brief Peripherals setup and initialization.
 *
 * Copyright (C) 2015-2019 Dialog Semiconductor.
 * This computer program includes Confidential, Proprietary Information
 * of Dialog Semiconductor. All Rights Reserved.
 *
 ****************************************************************************************
 */

/*
 * INCLUDE FILES
 ****************************************************************************************
 */

#include "user_periph_setup.h"
#include "datasheet.h"
#include "system_library.h"
#include "rwip_config.h"
#include "gpio.h"
#include "uart.h"
#include "syscntl.h"
#include "fpga_helper.h"

/*
 * GLOBAL VARIABLE DEFINITIONS
 ****************************************************************************************
 */

/**
 ****************************************************************************************
 * @brief Each application reserves its own GPIOs here.
 ****************************************************************************************
 */

#if DEVELOPMENT_DEBUG

void GPIO_reservations(void)
{
/*
 i.e. to reserve P0_1 as Generic Purpose I/O:
 RESERVE_GPIO(DESCRIPTIVE_NAME, GPIO_PORT_0, GPIO_PIN_1, PID_GPIO);
*/
 // Push Button
 RESERVE_GPIO(PUSH_BUTTON, GPIO_BUTTON_PORT, GPIO_BUTTON_PIN, PID_GPIO);

#if defined (CFG_PRINTF_UART2)
 RESERVE_GPIO(UART2_TX, UART2_TX_PORT, UART2_TX_PIN, PID_UART2_TX);
#endif

 RESERVE_GPIO(LED, GPIO_LED_PORT, GPIO_LED_PIN, PID_GPIO);

#if defined (CFG_SPI_FLASH_ENABLE)	
	RESERVE_GPIO(SPI_FLASH_CS, SPI_EN_PORT, SPI_EN_PIN, PID_SPI_EN);
	RESERVE_GPIO(SPI_FLASH_CLK, SPI_CLK_PORT, SPI_CLK_PIN, PID_SPI_CLK);
	RESERVE_GPIO(SPI_FLASH_DO, SPI_DO_PORT, SPI_DO_PIN, PID_SPI_DO);
	RESERVE_GPIO(SPI_FLASH_DI, SPI_DI_PORT, SPI_DI_PIN, PID_SPI_DI);
#endif
}

#endif

void set_pad_functions(void)
{
/*
 i.e. to set P0_1 as Generic purpose Output:
 GPIO_ConfigurePin(GPIO_PORT_0, GPIO_PIN_1, OUTPUT, PID_GPIO, false);
*/

 // Push Button
 GPIO_ConfigurePin(GPIO_BUTTON_PORT, GPIO_BUTTON_PIN, INPUT_PULLUP, PID_GPIO, false);
	
#if defined (CFG_SPI_FLASH_ENABLE)
 // Configure SPI pins
 GPIO_ConfigurePin(SPI_EN_PORT, SPI_EN_PIN, OUTPUT, PID_SPI_EN, true);
 GPIO_ConfigurePin(SPI_CLK_PORT, SPI_CLK_PIN, OUTPUT, PID_SPI_CLK, false);
 GPIO_ConfigurePin(SPI_DO_PORT, SPI_DO_PIN, OUTPUT, PID_SPI_DO, false);
 GPIO_ConfigurePin(SPI_DI_PORT, SPI_DI_PIN, INPUT, PID_SPI_DI, false);
 
 
#endif

#if defined (CFG_PRINTF_UART2)
 // Configure UART2 TX Pad
 GPIO_ConfigurePin(UART2_TX_PORT, UART2_TX_PIN, OUTPUT, PID_UART2_TX, false);
#endif

 GPIO_ConfigurePin(GPIO_LED_PORT, GPIO_LED_PIN, OUTPUT, PID_GPIO, false);
}



#if defined (CFG_PRINTF_UART2)
// Configuration struct for UART2
static const uart_cfg_t uart_cfg = {
 .baud_rate = UART2_BAUDRATE,
 .data_bits = UART2_DATABITS,
 .parity = UART2_PARITY,
 .stop_bits = UART2_STOPBITS,
 .auto_flow_control = UART2_AFCE,
 .use_fifo = UART2_FIFO,
 .tx_fifo_tr_lvl = UART2_TX_FIFO_LEVEL,
 .rx_fifo_tr_lvl = UART2_RX_FIFO_LEVEL,
 .intr_priority = 2,
};
#endif

// Configuration struct for SPI
const spi_cfg_t spi_cfg = {
 .spi_ms = SPI_MS_MODE,
 .spi_cp = SPI_CP_MODE,
 .spi_speed = SPI_SPEED_MODE,
 .spi_wsz = SPI_WSZ,
 .spi_cs = SPI_CS,
 .cs_pad.port = SPI_EN_PORT,
 .cs_pad.pin = SPI_EN_PIN,
#if defined (__DA14531__)
 .spi_capture = SPI_EDGE_CAPTURE,
#endif
#if defined (CFG_SPI_DMA_SUPPORT)
 .spi_dma_channel = SPI_DMA_CHANNEL_01,
 .spi_dma_priority = DMA_PRIO_0,
#endif
};

// Configuration struct for SPI FLASH
const spi_flash_cfg_t spi_flash_cfg = {
 .chip_size = SPI_FLASH_DEV_SIZE,
 .jedec_id = P25Q40U_JEDEC_ID,
 .dev_index = P25Q40U_DEV_INDEX
};
void periph_init(void)
{
#if defined (__DA14531__)
 // Select FPGA GPIO_MAP 1
 // set debugger SWD to SW_CLK = P0[2], SW_DIO=P0[5]
 FPGA_HELPER(FPGA_GPIO_MAP_1, SWD_DATA_AT_P0_5);

 // In Boost mode enable the DCDC converter to supply VBAT_HIGH for the used GPIOs
 // Assumption: The connected external peripheral is powered by 3V
 syscntl_dcdc_turn_on_in_boost(SYSCNTL_DCDC_LEVEL_3V0);
#else
 // Power up peripherals' power domain
 SetBits16(PMU_CTRL_REG, PERIPH_SLEEP, 0);
 while (!(GetWord16(SYS_STAT_REG) & PER_IS_UP));
 SetBits16(CLK_16M_REG, XTAL16_BIAS_SH_ENABLE, 1);
#endif

 // ROM patch
 patch_func();

 // Initialize peripherals
#if defined (CFG_PRINTF_UART2)
 // Initialize UART2
 uart_initialize(UART2, &uart_cfg);
#endif

#if defined (CFG_SPI_FLASH_ENABLE)
 // Configure SPI Flash environment
 spi_flash_configure_env(&spi_flash_cfg);

 // Initialize SPI
 spi_initialize(&spi_cfg);
#endif

 // Set pad functionality
 set_pad_functions();

 // Enable the pads
 GPIO_set_pad_latch_en(true);
}
 Make sure you also define the CFG_SPI_FLASH_ENABLE macro on the da1458x_config_basic.h file and you call the spi_flash_power_down() API on the user_app_init to get the SPI Flash to power down when the application starts. Note: You will need to include the spi_flash.h file in order to do that. Then please compile and load the new FW into your board and test again. Best Regards, OV_Renesas

GPIO wake-up and sleep

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