Peter Siegmund
8bf9e8f462
write is working (print into log), but notify doesn't work yet Signed-off-by: Peter Siegmund <mars3142@users.noreply.github.com>
71 lines
2.4 KiB
C
71 lines
2.4 KiB
C
#include "include/uart_service.h"
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static const char *TAG = "uart_service";
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// Service UUID: 6E400001-B5A3-F393-E0A9-E50E24DCCA9E
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const ble_uuid128_t gatt_svr_svc_uart_uuid =
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BLE_UUID128_INIT(0x9E, 0xCA, 0xDC, 0x24, 0x0E, 0xE5, 0xA9, 0xE0, 0x93, 0xF3, 0xA3, 0xB5, 0x01, 0x00, 0x40, 0x6E);
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// RX Characteristic UUID: 6E400002-B5A3-F393-E0A9-E50E24DCCA9E
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const ble_uuid128_t gatt_svr_chr_uart_rx_uuid =
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BLE_UUID128_INIT(0x9E, 0xCA, 0xDC, 0x24, 0x0E, 0xE5, 0xA9, 0xE0, 0x93, 0xF3, 0xA3, 0xB5, 0x02, 0x00, 0x40, 0x6E);
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// TX Characteristic UUID: 6E400003-B5A3-F393-E0A9-E50E24DCCA9E
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const ble_uuid128_t gatt_svr_chr_uart_tx_uuid =
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BLE_UUID128_INIT(0x9E, 0xCA, 0xDC, 0x24, 0x0E, 0xE5, 0xA9, 0xE0, 0x93, 0xF3, 0xA3, 0xB5, 0x03, 0x00, 0x40, 0x6E);
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uint16_t conn_handle;
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uint16_t tx_chr_val_handle;
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// Callback function for GATT events (read/write on characteristics)
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int gatt_svr_chr_uart_access(uint16_t conn_handle, uint16_t attr_handle, struct ble_gatt_access_ctxt *ctxt, void *arg)
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{
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switch (ctxt->op)
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{
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case BLE_GATT_ACCESS_OP_WRITE_CHR:
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// Check if the RX characteristic is being written to
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// if (ble_uuid_cmp((const ble_uuid_t *)&ctxt->chr->uuid, (const ble_uuid_t *)&gatt_svr_chr_uart_rx_uuid) == 0)
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{
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// Get data from the buffer
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uint16_t data_len = OS_MBUF_PKTLEN(ctxt->om);
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char *data = (char *)malloc(data_len + 1);
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if (data)
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{
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int rc = ble_hs_mbuf_to_flat(ctxt->om, data, data_len, NULL);
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if (rc == 0)
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{
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data[data_len] = '\0';
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ESP_LOGI(TAG, "Received data: %s", data);
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}
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free(data);
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}
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return 0;
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}
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break;
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default:
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break;
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}
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return BLE_ATT_ERR_UNLIKELY;
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}
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// Function to send data via the TX characteristic
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void send_ble_data(const char *data)
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{
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if (conn_handle != 0)
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{ // Only send when connected
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struct os_mbuf *om = ble_hs_mbuf_from_flat(data, strlen(data));
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if (om)
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{
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int rc = ble_gatts_notify_custom(conn_handle, tx_chr_val_handle, om);
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if (rc == 0)
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{
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ESP_LOGI(TAG, "Sent data: %s", data);
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}
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else
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{
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ESP_LOGE(TAG, "Error sending data: %d", rc);
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}
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}
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}
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}
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