Problem with setting two uart on pca10040 board
hello
I am reading the log by teraterm by connecting pca10040 board to PC via USB.
I am trying to connect 6pin and 8pin of the board to other devices through uart.
The example used ble_app_uart.
The problem occurs with NRF_BREAKPOINT_COND in uart init.
In my opinion, it seems to conflict with printf output to teraterm and 6,8 pin uart.
Is there a way to use two uarts separately?
//best regards
Hello,
Is there a way to use two uarts separately?
Unfortunately no, the nRF52832 SoC only has 1 UART instance.
The problem occurs with NRF_BREAKPOINT_COND in uart init.
I would think this error you are seeing is from trying to initialize the one instance twice.
If you would like to verify this, please add DEBUG to your preprocessor defines as shown in the included picture, to see what error is being generated.
I am trying to connect 6pin and 8pin of the board to other devices through uart.
What other devices are you trying to connect with? Perhaps the other devices support another serial interface?
Best regards,
Karl
Thanks for your kind response.
The device I am trying to connect is the IMU Module.
I am trying to connect the uart pin (vcc,gnd,rx,tx) of the device with the PCA10040 board.
The purpose is to send the value of the IMU Module to the PCA10040 board
and then send the value back to the terminal of the PC via USB.
Recompiled using the method you indicated.
Is there any way to solve the problem?
Best regards,
tobaro4
Hello Tobaro,
tobaro4 said:The device I am trying to connect is the IMU Module.
I am trying to connect the uart pin (vcc,gnd,rx,tx) of the device with the PCA10040 board.
The purpose is to send the value of the IMU Module to the PCA10040 board
and then send the value back to the terminal of the PC via USB.
Thank you for the clarification.
The error NRF_ERROR_SVC_HANDLER_MISSING is often caused by not having enabled the SoftDevice (using sd_ble_enable) or if the headers included for the SoftDevice are not the correct headers for the particular SoftDevice you are using.
Could you verify that you have indeed enabled the SoftDevice, and that the included headers match the particular SoftDevice you are using?
Best regards,
Karl
Thank you.
If it is sd_ble_enable, do you mean NRF_SDH_BLE_ENABLED in sdk_config.h?
If so, it is active.
If not, can you tell me which SoftDevice to set up?
Sorry, but maybe I didn't understand your advice.
add
It leaves a detailed compilation error message:
<info> app_timer: RTC: initialized.
<error> app: Communication error occurred while handling UART.
<error> app: ERROR 1 [NRF_ERROR_SVC_HANDLER_MISSING] at C:\work\99.study\nordic\Nordic_SDK_v17\nRF5_SDK_17.0.0_9d13099\examples\ble_central\ble_app_uart_c\main.c:394
PC at: 0x00027587
<error> app: End of error report
I searched for the related error message:
https://devzone.nordicsemi.com/f/nordic-q-a/37193/nrf_error_svc_handler_missing-of-uart
There is something like this, but I still don't understand.
Best regards,
tobaro4
Hello Tobaro4,
tobaro4 said:Thank you.
No problem at all, I am happy to help!
tobaro4 said:If it is sd_ble_enable, do you mean NRF_SDH_BLE_ENABLED in sdk_config.h?
If so, it is active.
If not, can you tell me which SoftDevice to set up?
Sorry, but maybe I didn't understand your advice.
I will try to be more specific. Please let me know if anything still should be unclear.
In the unmodified ble_app_uart example the SoftDevice is enabled as part of the ble_stack_init function ( specifically during the nrf_sdh_enable_request ).
Have you made any changes to this?
Does your application start, or could you go into debugger mode to see if the application gets past this function call at all?
If it does not, then there is a problem with the SoftDevice configuration or setup.
tobaro4 said:
I searched for the related error message:
https://devzone.nordicsemi.com/f/nordic-q-a/37193/nrf_error_svc_handler_missing-of-uart
There is something like this, but I still don't understand.
This is a good find, and may apply to your situation if the debugging check I mentioned above does not produce anything. If your application is able to start, and begin communication before suddenly failing during uart transfer, then it might indeed be an overrun error.
In that case, we will need to take a look at the buffer size you have specified, and how frequently they are processed and emptied.
Best regards,
Karl
I know you're doing your best for me. Thanks for this.
But I am completely newbie on this part. I'm using an unmodified example and I don't know how to fix it.
Should I call the ble_stack_init() function before the uart_init() function? I really don't understand. I'm really sorry.
If the IMU device is connected to the rx pin, the program will not run. If you don't connect the rx pin, the program will run. However, if I connect the rx pin while the program is running, it dies quickly. It seems to die reading about 147 bytes. How to process or empty the buffer size?
Best regards,
tobaro4
tobaro4 said:I know you're doing your best for me. Thanks for this.
tobaro4 said:But I am completely newbie on this part. I'm using an unmodified example and I don't know how to fix it.
It is truly no problem at all, do not worry :)
tobaro4 said:Should I call the ble_stack_init() function before the uart_init() function? I really don't understand. I'm really sorry.
Lets take it from the start instead. Have you tried running an unmodified version of the example? I.e, does the example work as intended when you program your device with an unmodified version?
The unmodified Nordic UART peripheral example should behave as described in its documentation.
When we have confirmed that this is working as intended, then we may move on to modifying the example to suit the needs of your application.
tobaro4 said:If the IMU device is connected to the rx pin, the program will not run. If you don't connect the rx pin, the program will run. However, if I connect the rx pin while the program is running, it dies quickly.
This is very interesting. Could you elaborate what you mean when you say that the program dies, or what happens if it does not start at all?
Perhaps this is caused by the buffers being overrun.
tobaro4 said:It seems to die reading about 147 bytes. How to process or empty the buffer size?
Is it an option to use flow control on the UART communication to the IMU?
Or, could you share the parts of the code in which you empty / process the contents of the RX buffer?
Looking forward to resolving this issue together!
Best regards,
Karl
tobaro4 said:I know you're doing your best for me. Thanks for this.
tobaro4 said:But I am completely newbie on this part. I'm using an unmodified example and I don't know how to fix it.
It is truly no problem at all, do not worry :)
tobaro4 said:Should I call the ble_stack_init() function before the uart_init() function? I really don't understand. I'm really sorry.
Lets take it from the start instead. Have you tried running an unmodified version of the example? I.e, does the example work as intended when you program your device with an unmodified version?
The unmodified Nordic UART peripheral example should behave as described in its documentation.
When we have confirmed that this is working as intended, then we may move on to modifying the example to suit the needs of your application.
tobaro4 said:If the IMU device is connected to the rx pin, the program will not run. If you don't connect the rx pin, the program will run. However, if I connect the rx pin while the program is running, it dies quickly.
This is very interesting. Could you elaborate what you mean when you say that the program dies, or what happens if it does not start at all?
Perhaps this is caused by the buffers being overrun.
tobaro4 said:It seems to die reading about 147 bytes. How to process or empty the buffer size?
Is it an option to use flow control on the UART communication to the IMU?
Or, could you share the parts of the code in which you empty / process the contents of the RX buffer?
Looking forward to resolving this issue together!
Best regards,
Karl
ok
Thanks to you, I am encouraged.
When I say that the program dies, it dies with NRF_BREAKPOINT_COND as in the screenshot I posted above.
When looking at the IMU's menual, it seems that flow control is not used.
Attach the c file of the program I modified.
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*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form, except as embedded into a Nordic
* Semiconductor ASA integrated circuit in a product or a software update for
* such product, must reproduce the above copyright notice, this list of
* conditions and the following disclaimer in the documentation and/or other
* materials provided with the distribution.
*
* 3. Neither the name of Nordic Semiconductor ASA nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* 4. This software, with or without modification, must only be used with a
* Nordic Semiconductor ASA integrated circuit.
*
* 5. Any software provided in binary form under this license must not be reverse
* engineered, decompiled, modified and/or disassembled.
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#include <stdio.h>
#include <stdint.h>
#include <stdbool.h>
#include "nordic_common.h"
#include "app_error.h"
#include "app_uart.h"
#include "ble_db_discovery.h"
#include "app_timer.h"
#include "app_util.h"
#include "bsp_btn_ble.h"
#include "ble.h"
#include "ble_gap.h"
#include "ble_hci.h"
#include "nrf_sdh.h"
#include "nrf_sdh_ble.h"
#include "nrf_sdh_soc.h"
#include "ble_nus_c.h"
#include "nrf_ble_gatt.h"
#include "nrf_pwr_mgmt.h"
#include "nrf_ble_scan.h"
#include "nrf_log.h"
#include "nrf_log_ctrl.h"
#include "nrf_log_default_backends.h"
#define APP_BLE_CONN_CFG_TAG 1 /**< Tag that refers to the BLE stack configuration set with @ref sd_ble_cfg_set. The default tag is @ref BLE_CONN_CFG_TAG_DEFAULT. */
#define APP_BLE_OBSERVER_PRIO 3 /**< BLE observer priority of the application. There is no need to modify this value. */
#define UART_TX_BUF_SIZE 256 /**< UART TX buffer size. */
#define UART_RX_BUF_SIZE 256 /**< UART RX buffer size. */
#define NUS_SERVICE_UUID_TYPE BLE_UUID_TYPE_VENDOR_BEGIN /**< UUID type for the Nordic UART Service (vendor specific). */
#define ECHOBACK_BLE_UART_DATA 1 /**< Echo the UART data that is received over the Nordic UART Service (NUS) back to the sender. */
BLE_NUS_C_DEF(m_ble_nus_c); /**< BLE Nordic UART Service (NUS) client instance. */
NRF_BLE_GATT_DEF(m_gatt); /**< GATT module instance. */
BLE_DB_DISCOVERY_DEF(m_db_disc); /**< Database discovery module instance. */
NRF_BLE_SCAN_DEF(m_scan); /**< Scanning Module instance. */
NRF_BLE_GQ_DEF(m_ble_gatt_queue, /**< BLE GATT Queue instance. */
NRF_SDH_BLE_CENTRAL_LINK_COUNT,
NRF_BLE_GQ_QUEUE_SIZE);
static uint16_t m_ble_nus_max_data_len = BLE_GATT_ATT_MTU_DEFAULT - OPCODE_LENGTH - HANDLE_LENGTH; /**< Maximum length of data (in bytes) that can be transmitted to the peer by the Nordic UART service module. */
/**@brief NUS UUID. */
static ble_uuid_t const m_nus_uuid =
{
.uuid = BLE_UUID_NUS_SERVICE,
.type = NUS_SERVICE_UUID_TYPE
};
////////////tobaro4
static uint32_t m_button_number = 0;
static uint32_t m_beacon_number = 0;
static uint32_t m_rx_done_flag = 0;
static int m_beacon_rssi[4] = {0,};
/**@brief Function for handling asserts in the SoftDevice.
*
* @details This function is called in case of an assert in the SoftDevice.
*
* @warning This handler is only an example and is not meant for the 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] p_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(0xDEADBEEF, line_num, p_file_name);
}
/**@brief Function for handling the Nordic UART Service Client errors.
*
* @param[in] nrf_error Error code containing information about what went wrong.
*/
static void nus_error_handler(uint32_t nrf_error)
{
APP_ERROR_HANDLER(nrf_error);
}
/**@brief Function to start scanning. */
static void scan_start(void)
{
ret_code_t ret;
ret = nrf_ble_scan_start(&m_scan);
APP_ERROR_CHECK(ret);
ret = bsp_indication_set(BSP_INDICATE_SCANNING);
APP_ERROR_CHECK(ret);
}
/**@brief Function for handling Scanning Module events.
*/
static void scan_evt_handler(scan_evt_t const * p_scan_evt)
{
ret_code_t err_code;
switch(p_scan_evt->scan_evt_id)
{
case NRF_BLE_SCAN_EVT_CONNECTING_ERROR:
{
err_code = p_scan_evt->params.connecting_err.err_code;
APP_ERROR_CHECK(err_code);
} break;
case NRF_BLE_SCAN_EVT_CONNECTED:
{
ble_gap_evt_connected_t const * p_connected =
p_scan_evt->params.connected.p_connected;
// Scan is automatically stopped by the connection.
NRF_LOG_INFO("Connecting to target %02x%02x%02x%02x%02x%02x",
p_connected->peer_addr.addr[0],
p_connected->peer_addr.addr[1],
p_connected->peer_addr.addr[2],
p_connected->peer_addr.addr[3],
p_connected->peer_addr.addr[4],
p_connected->peer_addr.addr[5]
);
} break;
case NRF_BLE_SCAN_EVT_SCAN_TIMEOUT:
{
NRF_LOG_INFO("Scan timed out.");
scan_start();
} break;
case NRF_BLE_SCAN_EVT_NOT_FOUND:
{
ble_gap_evt_adv_report_t const * p_adv_report =
p_scan_evt->params.p_not_found;
//NRF_LOG_INFO("[SCAN][data:%02x%02x%02x%02x%02x%02x][mac:%02x%02x%02x]",
if((p_adv_report->data.p_data != NULL) && (p_adv_report->data.len != 0))
{
#if 1
if((p_adv_report->data.p_data[5] == 0x59) && (p_adv_report->data.p_data[6] == 0x00) &&
(p_adv_report->data.p_data[7] == 0x02) && (p_adv_report->data.p_data[8] == 0x15) &&
(p_adv_report->data.p_data[25] == 0xAB) && (p_adv_report->data.p_data[26] == 0xCD) &&
(p_adv_report->data.p_data[27] == 0xEF))
{
if((p_adv_report->data.p_data[28] & 0x0F) == 1)
{
m_beacon_rssi[0] = p_adv_report->rssi;
}
else if((p_adv_report->data.p_data[28] & 0x0F) == 2)
{
m_beacon_rssi[1] = p_adv_report->rssi;
}
else if((p_adv_report->data.p_data[28] & 0x0F) == 3)
{
m_beacon_rssi[2] = p_adv_report->rssi;
}
else if((p_adv_report->data.p_data[28] & 0x0F) == 4)
{
m_beacon_rssi[3] = p_adv_report->rssi;
}
}
#else
switch(m_button_number)
{
case 1:
{
printf("[SCANDATA][NAME(%d):", p_adv_report->data.len);
for(int i = 0; i < p_adv_report->data.len; i++)
{
printf("%02x", p_adv_report->data.p_data[i]);
}
printf("][MACADR:%02x%02x%02x%02x%02x%02x \r\n",
p_adv_report->peer_addr.addr[5],
p_adv_report->peer_addr.addr[4],
p_adv_report->peer_addr.addr[3],
p_adv_report->peer_addr.addr[2],
p_adv_report->peer_addr.addr[1],
p_adv_report->peer_addr.addr[0]);
}
break;
case 2:
{
if((p_adv_report->data.p_data[5] == 0x59) && (p_adv_report->data.p_data[6] == 0x00) &&
(p_adv_report->data.p_data[7] == 0x02) && (p_adv_report->data.p_data[8] == 0x15) &&
(p_adv_report->data.p_data[25] == 0xAB) && (p_adv_report->data.p_data[26] == 0xCD) &&
(p_adv_report->data.p_data[27] == 0xEF))
{
printf("[SCANDATA][NAME(%d):", p_adv_report->data.len);
for(int i = 0; i < p_adv_report->data.len; i++)
{
printf("%02x", p_adv_report->data.p_data[i]);
}
printf("][MACADR:%02x%02x%02x%02x%02x%02x][RSSI:%d] \r\n",
p_adv_report->peer_addr.addr[5],
p_adv_report->peer_addr.addr[4],
p_adv_report->peer_addr.addr[3],
p_adv_report->peer_addr.addr[2],
p_adv_report->peer_addr.addr[1],
p_adv_report->peer_addr.addr[0],
p_adv_report->rssi);
}
}
break;
case 3:
{
if((p_adv_report->data.p_data[5] == 0x59) && (p_adv_report->data.p_data[6] == 0x00) &&
(p_adv_report->data.p_data[7] == 0x02) && (p_adv_report->data.p_data[8] == 0x15) &&
(p_adv_report->data.p_data[25] == 0xAB) && (p_adv_report->data.p_data[26] == 0xCD) &&
(p_adv_report->data.p_data[27] == 0xEF))
{
if((p_adv_report->data.p_data[28] & 0x0F) == m_beacon_number)
{
printf("[SCANDATA][NAME(%d):", p_adv_report->data.len);
for(int i = 0; i < p_adv_report->data.len; i++)
{
printf("%02x", p_adv_report->data.p_data[i]);
}
printf("][MACADR:%02x%02x%02x%02x%02x%02x][RSSI:%d] \r\n",
p_adv_report->peer_addr.addr[5],
p_adv_report->peer_addr.addr[4],
p_adv_report->peer_addr.addr[3],
p_adv_report->peer_addr.addr[2],
p_adv_report->peer_addr.addr[1],
p_adv_report->peer_addr.addr[0],
p_adv_report->rssi);
}
}
}
break;
case 4:
{
}
break;
}
#endif
}
} break;
default:
break;
}
}
/**@brief Function for initializing the scanning and setting the filters.
*/
static void scan_init(void)
{
ret_code_t err_code;
nrf_ble_scan_init_t init_scan;
memset(&init_scan, 0, sizeof(init_scan));
init_scan.connect_if_match = true;
init_scan.conn_cfg_tag = APP_BLE_CONN_CFG_TAG;
err_code = nrf_ble_scan_init(&m_scan, &init_scan, scan_evt_handler);
APP_ERROR_CHECK(err_code);
//err_code = nrf_ble_scan_filter_set(&m_scan, SCAN_UUID_FILTER, &m_nus_uuid);
//APP_ERROR_CHECK(err_code);
//err_code = nrf_ble_scan_filters_enable(&m_scan, NRF_BLE_SCAN_UUID_FILTER, false);
//APP_ERROR_CHECK(err_code);
}
/**@brief Function for handling database discovery events.
*
* @details This function is a callback function to handle events from the database discovery module.
* Depending on the UUIDs that are discovered, this function forwards the events
* to their respective services.
*
* @param[in] p_event Pointer to the database discovery event.
*/
static void db_disc_handler(ble_db_discovery_evt_t * p_evt)
{
ble_nus_c_on_db_disc_evt(&m_ble_nus_c, p_evt);
}
/**@brief Function for handling characters received by the Nordic UART Service (NUS).
*
* @details This function takes a list of characters of length data_len and prints the characters out on UART.
* If @ref ECHOBACK_BLE_UART_DATA is set, the data is sent back to sender.
*/
static void ble_nus_chars_received_uart_print(uint8_t * p_data, uint16_t data_len)
{
ret_code_t ret_val;
NRF_LOG_DEBUG("Receiving data.");
NRF_LOG_HEXDUMP_DEBUG(p_data, data_len);
for (uint32_t i = 0; i < data_len; i++)
{
do
{
ret_val = app_uart_put(p_data[i]);
if ((ret_val != NRF_SUCCESS) && (ret_val != NRF_ERROR_BUSY))
{
NRF_LOG_ERROR("app_uart_put failed for index 0x%04x.", i);
APP_ERROR_CHECK(ret_val);
}
} while (ret_val == NRF_ERROR_BUSY);
}
if (p_data[data_len-1] == '\r')
{
while (app_uart_put('\n') == NRF_ERROR_BUSY);
}
if (ECHOBACK_BLE_UART_DATA)
{
// Send data back to the peripheral.
do
{
ret_val = ble_nus_c_string_send(&m_ble_nus_c, p_data, data_len);
if ((ret_val != NRF_SUCCESS) && (ret_val != NRF_ERROR_BUSY))
{
NRF_LOG_ERROR("Failed sending NUS message. Error 0x%x. ", ret_val);
APP_ERROR_CHECK(ret_val);
}
} while (ret_val == NRF_ERROR_BUSY);
}
}
/**@brief Function for handling app_uart events.
*
* @details This function receives a single character from the app_uart module and appends it to
* a string. The string is sent over BLE when the last character received is a
* 'new line' '\n' (hex 0x0A) or if the string reaches the maximum data length.
*/
void uart_event_handle(app_uart_evt_t * p_event)
{
static uint8_t data_array[BLE_NUS_MAX_DATA_LEN];
static uint16_t index = 0;
uint32_t ret_val;
//char data_copy[256] = {0,};
//int idx = 0;
switch (p_event->evt_type)
{
/**@snippet [Handling data from UART] */
case APP_UART_DATA_READY:
UNUSED_VARIABLE(app_uart_get(&data_array[index]));
if(data_array[index] == '*')
{
printf("1,%d, 2,%d 3,%d 4,%d %c,", m_beacon_rssi[0], m_beacon_rssi[1], m_beacon_rssi[2], m_beacon_rssi[3], data_array[index]);
//idx == 0;
//m_rx_done_flag = 1;
//printf("%c,", data_array[index]);
}
else
printf("%c", data_array[index]);
//data_copy[idx++] = data_array[index];
index++;
if ((data_array[index - 1] == '\n') ||
(data_array[index - 1] == '\r') ||
(index >= (m_ble_nus_max_data_len)))
{
//else
{
NRF_LOG_DEBUG("Ready to send data over BLE NUS");
NRF_LOG_HEXDUMP_DEBUG(data_array, index);
do
{
ret_val = ble_nus_c_string_send(&m_ble_nus_c, data_array, index);
if ( (ret_val != NRF_ERROR_INVALID_STATE) && (ret_val != NRF_ERROR_RESOURCES) )
{
APP_ERROR_CHECK(ret_val);
}
} while (ret_val == NRF_ERROR_RESOURCES);
index = 0;
}
}
break;
/**@snippet [Handling data from UART] */
case APP_UART_COMMUNICATION_ERROR:
NRF_LOG_ERROR("Communication error occurred while handling UART.");
APP_ERROR_HANDLER(p_event->data.error_communication);
break;
case APP_UART_FIFO_ERROR:
NRF_LOG_ERROR("Error occurred in FIFO module used by UART.");
APP_ERROR_HANDLER(p_event->data.error_code);
break;
default:
break;
}
}
/**@brief Callback handling Nordic UART Service (NUS) client events.
*
* @details This function is called to notify the application of NUS client events.
*
* @param[in] p_ble_nus_c NUS client handle. This identifies the NUS client.
* @param[in] p_ble_nus_evt Pointer to the NUS client event.
*/
/**@snippet [Handling events from the ble_nus_c module] */
static void ble_nus_c_evt_handler(ble_nus_c_t * p_ble_nus_c, ble_nus_c_evt_t const * p_ble_nus_evt)
{
ret_code_t err_code;
switch (p_ble_nus_evt->evt_type)
{
case BLE_NUS_C_EVT_DISCOVERY_COMPLETE:
NRF_LOG_INFO("Discovery complete.");
err_code = ble_nus_c_handles_assign(p_ble_nus_c, p_ble_nus_evt->conn_handle, &p_ble_nus_evt->handles);
APP_ERROR_CHECK(err_code);
err_code = ble_nus_c_tx_notif_enable(p_ble_nus_c);
APP_ERROR_CHECK(err_code);
NRF_LOG_INFO("Connected to device with Nordic UART Service.");
break;
case BLE_NUS_C_EVT_NUS_TX_EVT:
ble_nus_chars_received_uart_print(p_ble_nus_evt->p_data, p_ble_nus_evt->data_len);
break;
case BLE_NUS_C_EVT_DISCONNECTED:
NRF_LOG_INFO("Disconnected.");
scan_start();
break;
}
}
/**@snippet [Handling events from the ble_nus_c module] */
/**
* @brief Function for handling shutdown events.
*
* @param[in] event Shutdown type.
*/
static bool shutdown_handler(nrf_pwr_mgmt_evt_t event)
{
ret_code_t err_code;
err_code = bsp_indication_set(BSP_INDICATE_IDLE);
APP_ERROR_CHECK(err_code);
switch (event)
{
case NRF_PWR_MGMT_EVT_PREPARE_WAKEUP:
// Prepare wakeup buttons.
err_code = bsp_btn_ble_sleep_mode_prepare();
APP_ERROR_CHECK(err_code);
break;
default:
break;
}
return true;
}
NRF_PWR_MGMT_HANDLER_REGISTER(shutdown_handler, APP_SHUTDOWN_HANDLER_PRIORITY);
/**@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;
ble_gap_evt_t const * p_gap_evt = &p_ble_evt->evt.gap_evt;
switch (p_ble_evt->header.evt_id)
{
case BLE_GAP_EVT_CONNECTED:
err_code = ble_nus_c_handles_assign(&m_ble_nus_c, p_ble_evt->evt.gap_evt.conn_handle, NULL);
APP_ERROR_CHECK(err_code);
err_code = bsp_indication_set(BSP_INDICATE_CONNECTED);
APP_ERROR_CHECK(err_code);
// start discovery of services. The NUS Client waits for a discovery result
err_code = ble_db_discovery_start(&m_db_disc, p_ble_evt->evt.gap_evt.conn_handle);
APP_ERROR_CHECK(err_code);
break;
case BLE_GAP_EVT_DISCONNECTED:
NRF_LOG_INFO("Disconnected. conn_handle: 0x%x, reason: 0x%x",
p_gap_evt->conn_handle,
p_gap_evt->params.disconnected.reason);
break;
case BLE_GAP_EVT_TIMEOUT:
if (p_gap_evt->params.timeout.src == BLE_GAP_TIMEOUT_SRC_CONN)
{
NRF_LOG_INFO("Connection Request timed out.");
}
break;
case BLE_GAP_EVT_SEC_PARAMS_REQUEST:
// Pairing not supported.
err_code = sd_ble_gap_sec_params_reply(p_ble_evt->evt.gap_evt.conn_handle, BLE_GAP_SEC_STATUS_PAIRING_NOT_SUPP, NULL, NULL);
APP_ERROR_CHECK(err_code);
break;
case BLE_GAP_EVT_CONN_PARAM_UPDATE_REQUEST:
// Accepting parameters requested by peer.
err_code = sd_ble_gap_conn_param_update(p_gap_evt->conn_handle,
&p_gap_evt->params.conn_param_update_request.conn_params);
APP_ERROR_CHECK(err_code);
break;
case BLE_GAP_EVT_PHY_UPDATE_REQUEST:
{
NRF_LOG_DEBUG("PHY update request.");
ble_gap_phys_t const phys =
{
.rx_phys = BLE_GAP_PHY_AUTO,
.tx_phys = BLE_GAP_PHY_AUTO,
};
err_code = sd_ble_gap_phy_update(p_ble_evt->evt.gap_evt.conn_handle, &phys);
APP_ERROR_CHECK(err_code);
} break;
case BLE_GATTC_EVT_TIMEOUT:
// Disconnect on GATT Client timeout event.
NRF_LOG_DEBUG("GATT Client Timeout.");
err_code = sd_ble_gap_disconnect(p_ble_evt->evt.gattc_evt.conn_handle,
BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION);
APP_ERROR_CHECK(err_code);
break;
case BLE_GATTS_EVT_TIMEOUT:
// Disconnect on GATT Server timeout event.
NRF_LOG_DEBUG("GATT Server Timeout.");
err_code = sd_ble_gap_disconnect(p_ble_evt->evt.gatts_evt.conn_handle,
BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION);
APP_ERROR_CHECK(err_code);
break;
default:
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 handling events from the GATT library. */
void gatt_evt_handler(nrf_ble_gatt_t * p_gatt, nrf_ble_gatt_evt_t const * p_evt)
{
if (p_evt->evt_id == NRF_BLE_GATT_EVT_ATT_MTU_UPDATED)
{
NRF_LOG_INFO("ATT MTU exchange completed.");
m_ble_nus_max_data_len = p_evt->params.att_mtu_effective - OPCODE_LENGTH - HANDLE_LENGTH;
NRF_LOG_INFO("Ble NUS max data length set to 0x%X(%d)", m_ble_nus_max_data_len, m_ble_nus_max_data_len);
}
}
/**@brief Function for initializing the GATT library. */
void gatt_init(void)
{
ret_code_t err_code;
err_code = nrf_ble_gatt_init(&m_gatt, gatt_evt_handler);
APP_ERROR_CHECK(err_code);
err_code = nrf_ble_gatt_att_mtu_central_set(&m_gatt, NRF_SDH_BLE_GATT_MAX_MTU_SIZE);
APP_ERROR_CHECK(err_code);
}
/**@brief Function for handling events from the BSP module.
*
* @param[in] event Event generated by button press.
*/
void bsp_event_handler(bsp_event_t event)
{
ret_code_t err_code;
switch (event)
{
case BSP_EVENT_KEY_0:
m_button_number = 1;
//printf("[BTNPUSH] Push Button Number 1!!! \r\n");
break;
case BSP_EVENT_KEY_1:
m_button_number = 2;
//printf("[BTNPUSH] Push Button Number 2!!! \r\n");
break;
case BSP_EVENT_KEY_2:
m_button_number = 3;
m_beacon_number++;
if(m_beacon_number > 4)
m_beacon_number = 1;
//printf("[BTNPUSH] Push Button Number 3!!!, beacon number %d \r\n", m_beacon_number);
break;
case BSP_EVENT_KEY_3:
m_button_number = 4;
//printf("[BTNPUSH] Push Button Number 4!!! \r\n");
break;
/*
case BSP_EVENT_SLEEP:
printf("[BTNPUSH] Push Button Number 1!!! \r\n");
nrf_pwr_mgmt_shutdown(NRF_PWR_MGMT_SHUTDOWN_GOTO_SYSOFF);
break;
case BSP_EVENT_DISCONNECT:
printf("[BTNPUSH] Push Button Number 2!!! \r\n");
err_code = sd_ble_gap_disconnect(m_ble_nus_c.conn_handle,
BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION);
if (err_code != NRF_ERROR_INVALID_STATE)
{
APP_ERROR_CHECK(err_code);
}
break;
*/
default:
break;
}
}
/**@brief Function for initializing the UART. */
static void uart_init(void)
{
ret_code_t err_code;
app_uart_comm_params_t const comm_params =
{
.rx_pin_no = RX_PIN_NUMBER,
.tx_pin_no = TX_PIN_NUMBER,
.rts_pin_no = RTS_PIN_NUMBER,
.cts_pin_no = CTS_PIN_NUMBER,
.flow_control = APP_UART_FLOW_CONTROL_ENABLED,
.use_parity = false,
.baud_rate = UART_BAUDRATE_BAUDRATE_Baud115200
};
APP_UART_FIFO_INIT(&comm_params,
UART_RX_BUF_SIZE,
UART_TX_BUF_SIZE,
uart_event_handle,
APP_IRQ_PRIORITY_LOWEST,
err_code);
APP_ERROR_CHECK(err_code);
}
/**@brief Function for initializing the Nordic UART Service (NUS) client. */
static void nus_c_init(void)
{
ret_code_t err_code;
ble_nus_c_init_t init;
init.evt_handler = ble_nus_c_evt_handler;
init.error_handler = nus_error_handler;
init.p_gatt_queue = &m_ble_gatt_queue;
err_code = ble_nus_c_init(&m_ble_nus_c, &init);
APP_ERROR_CHECK(err_code);
}
/**@brief Function for initializing buttons and leds. */
static void buttons_leds_init(void)
{
ret_code_t err_code;
bsp_event_t startup_event;
err_code = bsp_init(BSP_INIT_LEDS, bsp_event_handler);
APP_ERROR_CHECK(err_code);
err_code = bsp_init(BSP_INIT_BUTTONS, bsp_event_handler);
APP_ERROR_CHECK(err_code);
err_code = bsp_btn_ble_init(NULL, &startup_event);
APP_ERROR_CHECK(err_code);
}
/**@brief Function for initializing the timer. */
static void timer_init(void)
{
ret_code_t err_code = app_timer_init();
APP_ERROR_CHECK(err_code);
}
/**@brief Function for initializing the nrf log module. */
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 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 initializing the database discovery module. */
static void db_discovery_init(void)
{
ble_db_discovery_init_t db_init;
memset(&db_init, 0, sizeof(ble_db_discovery_init_t));
db_init.evt_handler = db_disc_handler;
db_init.p_gatt_queue = &m_ble_gatt_queue;
ret_code_t err_code = ble_db_discovery_init(&db_init);
APP_ERROR_CHECK(err_code);
}
/**@brief Function for handling the idle state (main loop).
*
* @details Handles any pending log operations, then sleeps until the next event occurs.
*/
static void idle_state_handle(void)
{
if (NRF_LOG_PROCESS() == false)
{
nrf_pwr_mgmt_run();
}
}
int main(void)
{
// Initialize.
log_init();
timer_init();
uart_init();
buttons_leds_init();
db_discovery_init();
power_management_init();
ble_stack_init();
gatt_init();
nus_c_init();
scan_init();
// Start execution.
printf("BLE UART central example started.\r\n");
NRF_LOG_INFO("BLE UART central example started.");
scan_start();
// Enter main loop.
for (;;)
{
idle_state_handle();
//if(m_rx_done_flag == 1)
//{
// printf("rx ok! \r\n");
// m_rx_done_flag = 0;
//}
}
}
Even if it doesn't solve the problem, I'll try to find another way.
Thank you again.
Best regards,
tobaro4
Hello Tobaro4,
tobaro4 said:Thanks to you, I am encouraged.
I am happy to hear that!
tobaro4 said:When I say that the program dies, it dies with NRF_BREAKPOINT_COND as in the screenshot I posted above.
When looking at the IMU's menual, it seems that flow control is not used.
I understand. Do you get the exact same error generated, as in the screenshot you shared earlier?
In that case, I would think it is an overrun error, i.e a start bit is received while the previous data is still in the RXD buffer.
Do you have access to a logic analyzer? That would make this very easy to confirm.
tobaro4 said:Attach the c file of the program I modified.
When reading your main.c file I am not entirely sure what the intentions of some of your commented out code is.
Could you walk me through the changes you have made to the uart_event_handler - what is the purpose and goal of these changes?
Best regards,
Karl