Hello,
I'm trying to integrate an SPI slave into ble_app_beacon example. Power consumption of ble_app_beacon between advertising is up to 10 uA. But if I write a byte over SPI I immediately get idle power consumption up to 460 uA. Below is source code of the example. If line as_spi_write_reg (0x00,0x00); is commented out, power consumption is 10 uA. If the line is not commented out, 460 uA. How could I reset the power consumption back to 10 uA?
#include <stdbool.h>
#include <stdint.h>
#include "nordic_common.h"
//#include "bsp.h"
#include "nrf_soc.h"
#include "nrf_sdh.h"
#include "nrf_sdh_ble.h"
#include "ble_advdata.h"
#include "app_timer.h"
#include "nrf_pwr_mgmt.h"
#include "nrf_log.h"
#include "nrf_log_ctrl.h"
#include "nrf_log_default_backends.h"
#include "nrf_drv_spi.h"
#include "app_util_platform.h"
#include "nrf_gpio.h"
#include "nrf_delay.h"
//#include "nrf_spi_mngr.h"
#define APP_BLE_CONN_CFG_TAG 1 /**< A tag identifying the SoftDevice BLE configuration. */
#define APP_BLE_OBSERVER_PRIO 3 /**< Application's BLE observer priority. You shouldn't need to modify this value. */
#define NON_CONNECTABLE_ADV_INTERVAL MSEC_TO_UNITS(5000, UNIT_0_625_MS) /**< The advertising interval for non-connectable advertisement (100 ms). This value can vary between 100ms to 10.24s). */
#define APP_BEACON_INFO_LENGTH 0x17 /**< Total length of information advertised by the Beacon. */
#define APP_ADV_DATA_LENGTH 0x15 /**< Length of manufacturer specific data in the advertisement. */
#define APP_DEVICE_TYPE 0x02 /**< 0x02 refers to Beacon. */
#define APP_MEASURED_RSSI 0xC3 /**< The Beacon's measured RSSI at 1 meter distance in dBm. */
#define APP_COMPANY_IDENTIFIER 0x0059 /**< Company identifier for Nordic Semiconductor ASA. as per www.bluetooth.org. */
#define APP_MAJOR_VALUE 0x01, 0x02 /**< Major value used to identify Beacons. */
#define APP_MINOR_VALUE 0x03, 0x04 /**< Minor value used to identify Beacons. */
#define APP_BEACON_UUID 0x01, 0x12, 0x23, 0x34, \
0x45, 0x56, 0x67, 0x78, \
0x89, 0x9a, 0xab, 0xbc, \
0xcd, 0xde, 0xef, 0xf0 /**< Proprietary UUID for Beacon. */
#define DEAD_BEEF 0xDEADBEEF /**< Value used as error code on stack dump, can be used to identify stack location on stack unwind. */
#if defined(USE_UICR_FOR_MAJ_MIN_VALUES)
#define MAJ_VAL_OFFSET_IN_BEACON_INFO 18 /**< Position of the MSB of the Major Value in m_beacon_info array. */
#define UICR_ADDRESS 0x10001080 /**< Address of the UICR register used by this example. The major and minor versions to be encoded into the advertising data will be picked up from this location. */
#endif
static ble_gap_adv_params_t m_adv_params; /**< Parameters to be passed to the stack when starting advertising. */
static uint8_t m_adv_handle = BLE_GAP_ADV_SET_HANDLE_NOT_SET; /**< Advertising handle used to identify an advertising set. */
static uint8_t m_enc_advdata[BLE_GAP_ADV_SET_DATA_SIZE_MAX]; /**< Buffer for storing an encoded advertising set. */
//****************************************************************************//
// SPI DEFINITIONS
//****************************************************************************//
#define SIZE_OF_SPI_BUF 20
static uint8_t tx_spi_buf[SIZE_OF_SPI_BUF]; /**< TX buffer. */
static uint8_t rx_spi_buf[SIZE_OF_SPI_BUF]; /**< RX buffer. */
//static const uint8_t m_length = SIZE_OF_BUF; /**< Transfer length. */
#define SPI_INSTANCE 0 /**< SPI instance index. */
static const nrf_drv_spi_t spi = NRF_DRV_SPI_INSTANCE(SPI_INSTANCE); /**< SPI instance. */
static volatile bool spi_xfer_done; /**< Flag used to indicate that SPI instance completed the transfer. */
#define SPI_SCK_PIN 26
#define SPI_MOSI_PIN 29
#define SPI_MISO_PIN 30
#define AS_SPI_CS 31
//****************************************************************************//
// SPI FUNCTIONS
//****************************************************************************//
void as_spi_write_reg(uint8_t addr, uint8_t data)
{
// Reset rx buffer and transfer done flag
memset(rx_spi_buf, 0, SIZE_OF_SPI_BUF);
spi_xfer_done = false;
tx_spi_buf[0] = addr;
tx_spi_buf[1] = data;
nrf_gpio_pin_set(AS_SPI_CS);
APP_ERROR_CHECK(nrf_drv_spi_transfer(&spi, tx_spi_buf, 2, rx_spi_buf, 0));
while (!spi_xfer_done) __WFE(); //Wait For Event
nrf_gpio_pin_clear(AS_SPI_CS);
}
/**
* @brief SPI user event handler.
* @param event
*/
void spi_event_handler(nrf_drv_spi_evt_t const * p_event,
void * p_context)
{
spi_xfer_done = true;
}
//****************************************************************************//
// BLE FUNCTIONS
//****************************************************************************//
/**@brief Struct that contains pointers to the encoded advertising data. */
static ble_gap_adv_data_t m_adv_data =
{
.adv_data =
{
.p_data = m_enc_advdata,
.len = BLE_GAP_ADV_SET_DATA_SIZE_MAX
},
.scan_rsp_data =
{
.p_data = NULL,
.len = 0
}
};
static uint8_t m_beacon_info[APP_BEACON_INFO_LENGTH] = /**< Information advertised by the Beacon. */
{
APP_DEVICE_TYPE, // Manufacturer specific information. Specifies the device type in this
// implementation.
APP_ADV_DATA_LENGTH, // Manufacturer specific information. Specifies the length of the
// manufacturer specific data in this implementation.
APP_BEACON_UUID, // 128 bit UUID value.
APP_MAJOR_VALUE, // Major arbitrary value that can be used to distinguish between Beacons.
APP_MINOR_VALUE, // Minor arbitrary value that can be used to distinguish between Beacons.
APP_MEASURED_RSSI // Manufacturer specific information. The Beacon's measured TX power in
// this implementation.
};
/**@brief Callback function for asserts in the SoftDevice.
*
* @details This function will be called in case of an assert in the SoftDevice.
*
* @warning This handler is an example only and does not fit a final product. You need to analyze
* how your product is supposed to react in case of Assert.
* @warning On assert from the SoftDevice, the system can only recover on reset.
*
* @param[in] line_num Line number of the failing ASSERT call.
* @param[in] file_name File name of the failing ASSERT call.
*/
void assert_nrf_callback(uint16_t line_num, const uint8_t * p_file_name)
{
app_error_handler(DEAD_BEEF, line_num, p_file_name);
}
/**@brief Function for initializing the Advertising functionality.
*
* @details Encodes the required advertising data and passes it to the stack.
* Also builds a structure to be passed to the stack when starting advertising.
*/
static void advertising_init(void)
{
uint32_t err_code;
ble_advdata_t advdata;
uint8_t flags = BLE_GAP_ADV_FLAG_BR_EDR_NOT_SUPPORTED;
ble_advdata_manuf_data_t manuf_specific_data;
manuf_specific_data.company_identifier = APP_COMPANY_IDENTIFIER;
#if defined(USE_UICR_FOR_MAJ_MIN_VALUES)
// If USE_UICR_FOR_MAJ_MIN_VALUES is defined, the major and minor values will be read from the
// UICR instead of using the default values. The major and minor values obtained from the UICR
// are encoded into advertising data in big endian order (MSB First).
// To set the UICR used by this example to a desired value, write to the address 0x10001080
// using the nrfjprog tool. The command to be used is as follows.
// nrfjprog --snr <Segger-chip-Serial-Number> --memwr 0x10001080 --val <your major/minor value>
// For example, for a major value and minor value of 0xabcd and 0x0102 respectively, the
// the following command should be used.
// nrfjprog --snr <Segger-chip-Serial-Number> --memwr 0x10001080 --val 0xabcd0102
uint16_t major_value = ((*(uint32_t *)UICR_ADDRESS) & 0xFFFF0000) >> 16;
uint16_t minor_value = ((*(uint32_t *)UICR_ADDRESS) & 0x0000FFFF);
uint8_t index = MAJ_VAL_OFFSET_IN_BEACON_INFO;
m_beacon_info[index++] = MSB_16(major_value);
m_beacon_info[index++] = LSB_16(major_value);
m_beacon_info[index++] = MSB_16(minor_value);
m_beacon_info[index++] = LSB_16(minor_value);
#endif
manuf_specific_data.data.p_data = (uint8_t *) m_beacon_info;
manuf_specific_data.data.size = APP_BEACON_INFO_LENGTH;
// Build and set advertising data.
memset(&advdata, 0, sizeof(advdata));
advdata.name_type = BLE_ADVDATA_NO_NAME;
advdata.flags = flags;
advdata.p_manuf_specific_data = &manuf_specific_data;
// Initialize advertising parameters (used when starting advertising).
memset(&m_adv_params, 0, sizeof(m_adv_params));
//m_adv_params.properties.type = BLE_GAP_ADV_TYPE_NONCONNECTABLE_NONSCANNABLE_UNDIRECTED;
m_adv_params.properties.type = BLE_GAP_ADV_TYPE_NONCONNECTABLE_SCANNABLE_UNDIRECTED;
m_adv_params.p_peer_addr = NULL; // Undirected advertisement.
m_adv_params.filter_policy = BLE_GAP_ADV_FP_ANY;
m_adv_params.interval = NON_CONNECTABLE_ADV_INTERVAL;
m_adv_params.duration = 0; // Never time out.
m_adv_params.scan_req_notification = 1; //VLS
err_code = ble_advdata_encode(&advdata, m_adv_data.adv_data.p_data, &m_adv_data.adv_data.len);
APP_ERROR_CHECK(err_code);
err_code = sd_ble_gap_adv_set_configure(&m_adv_handle, &m_adv_data, &m_adv_params);
APP_ERROR_CHECK(err_code);
}
/**@brief Function for starting advertising.
*/
static void advertising_start(void)
{
ret_code_t err_code;
err_code = sd_ble_gap_adv_start(m_adv_handle, APP_BLE_CONN_CFG_TAG);
APP_ERROR_CHECK(err_code);
//err_code = bsp_indication_set(BSP_INDICATE_ADVERTISING);
//APP_ERROR_CHECK(err_code);
}
/**@brief Function for handling BLE events.
*
* @param[in] p_ble_evt Bluetooth stack event.
* @param[in] p_context Unused.
*/
static void ble_evt_handler(ble_evt_t const * p_ble_evt, void * p_context)
{
ret_code_t err_code;
switch (p_ble_evt->header.evt_id)
{
case BLE_GAP_EVT_SCAN_REQ_REPORT:
NRF_LOG_INFO("RSSI %d",p_ble_evt->evt.gap_evt.params.scan_req_report.rssi);
break;
default:
// No implementation needed.
break;
}
}
/**@brief Function for initializing the BLE stack.
*
* @details Initializes the SoftDevice and the BLE event interrupt.
*/
static void ble_stack_init(void)
{
ret_code_t err_code;
err_code = nrf_sdh_enable_request();
APP_ERROR_CHECK(err_code);
// Configure the BLE stack using the default settings.
// Fetch the start address of the application RAM.
uint32_t ram_start = 0;
err_code = nrf_sdh_ble_default_cfg_set(APP_BLE_CONN_CFG_TAG, &ram_start);
APP_ERROR_CHECK(err_code);
// Enable BLE stack.
err_code = nrf_sdh_ble_enable(&ram_start);
APP_ERROR_CHECK(err_code);
// Register a handler for BLE events.
NRF_SDH_BLE_OBSERVER(m_ble_observer, APP_BLE_OBSERVER_PRIO, ble_evt_handler, NULL);
}
/**@brief Function for initializing logging. */
static void log_init(void)
{
ret_code_t err_code = NRF_LOG_INIT(NULL);
APP_ERROR_CHECK(err_code);
NRF_LOG_DEFAULT_BACKENDS_INIT();
}
/**@brief Function for initializing timers. */
static void timers_init(void)
{
ret_code_t err_code = app_timer_init();
APP_ERROR_CHECK(err_code);
}
/**@brief Function for initializing power management.
*/
static void power_management_init(void)
{
ret_code_t err_code;
err_code = nrf_pwr_mgmt_init();
APP_ERROR_CHECK(err_code);
}
/**@brief Function for handling the idle state (main loop).
*
* @details If there is no pending log operation, then sleep until next the next event occurs.
*/
static void idle_state_handle(void)
{
if (NRF_LOG_PROCESS() == false)
{
nrf_pwr_mgmt_run();
}
}
/**
* @brief Function for application main entry.
*/
int main(void)
{
// Initialize.
log_init();
timers_init();
power_management_init();
ble_stack_init();
advertising_init();
// Start execution.
NRF_LOG_INFO("Beacon started.");
advertising_start();
nrf_drv_spi_config_t spi_config = NRF_DRV_SPI_DEFAULT_CONFIG;
nrf_gpio_cfg_output(AS_SPI_CS);
nrf_gpio_pin_clear(AS_SPI_CS);
spi_config.miso_pin = SPI_MISO_PIN;
spi_config.mosi_pin = SPI_MOSI_PIN;
spi_config.sck_pin = SPI_SCK_PIN;
APP_ERROR_CHECK(nrf_drv_spi_init(&spi, &spi_config, spi_event_handler, NULL));
as_spi_write_reg(0x00,0x00);
// Enter main loop.
for (;;)
{
idle_state_handle();
}
}
Thanks in advance
SDK_17.0.0_9d13099, nRF52832
