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fix(nimble): Fix prox service to handle negative values

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This commit is contained in:
Rahul Tank
2026-04-08 14:14:44 +05:30
parent 662a18e159
commit d5bf44c5fe
2 changed files with 4 additions and 17 deletions
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components/bt/host/nimble/nimble
+1 -1
Submodule components/bt/host/nimble/nimble updated: e934bb10bc...f40b4612ec
examples/bluetooth/nimble/ble_proximity_sensor/proximity_sensor_cent/main/main.c
+3 -16
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@@ -24,14 +24,6 @@ static int8_t tx_pwr_lvl;
static struct ble_prox_cent_conn_peer conn_peer[MYNEWT_VAL(BLE_MAX_CONNECTIONS) + 1];
static struct ble_prox_cent_link_lost_peer disconn_peer[MYNEWT_VAL(BLE_MAX_CONNECTIONS) + 1];
/* Note: Path loss is calculated using formula : threshold - RSSI value
* by default threshold is kept -128 as per the spec
* high_threshold and low_threshold are hardcoded after testing and noting
* RSSI values when distance between devices are less and more.
*/
static int8_t high_threshold = -70;
static int8_t low_threshold = -100;
void ble_store_config_init(void);
static void ble_prox_cent_scan(void);
static int ble_prox_cent_gap_event(struct ble_gap_event *event, void *arg);
@@ -661,16 +653,11 @@ ble_prox_cent_path_loss_task(void *pvParameters)
MODLOG_DFLT(INFO, "path loss = %d pwr lvl = %d rssi = %d",
path_loss, tx_pwr_lvl, rssi);
if ((conn_peer[i].val_handle != 0) &&
(path_loss > high_threshold || path_loss < low_threshold)) {
if (path_loss < low_threshold) {
path_loss = 0;
}
if (conn_peer[i].val_handle != 0) {
int8_t path_loss_val = (int8_t)path_loss;
#if MYNEWT_VAL(BLE_GATTC)
rc = ble_gattc_write_no_rsp_flat(i, conn_peer[i].val_handle,
&path_loss, sizeof(path_loss));
&path_loss_val, sizeof(path_loss_val));
if (rc != 0) {
MODLOG_DFLT(ERROR, "Error: Failed to write characteristic; rc=%d\n",
rc);