/**
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*******************************************************************************
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* @file uart_spp.c
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* @create 2023-08-01
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* @author Panchip BLE GROUP
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* @note
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* Copyright (c) 2022 Shanghai Panchip Microelectronics Co.,Ltd.
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*
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*******************************************************************************
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*/
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#include <assert.h>
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#include <stdio.h>
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#include <string.h>
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#include "uart_spp.h"
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#include "host/ble_hs.h"
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#include "host/ble_uuid.h"
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uint16_t uart_tx_handle;
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int ble_svc_spp_uart_write(uint8_t *p, uint32_t len);
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static int ble_svc_chr_access_spp(uint16_t conn_handle, uint16_t attr_handle,
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struct ble_gatt_access_ctxt *ctxt, void *arg);
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static const struct ble_gatt_svc_def ble_svc_uart_spp_defs[] =
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{
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{
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.type = BLE_GATT_SVC_TYPE_PRIMARY,
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.uuid = BLE_UUID128_DECLARE(BLE_SVC_SPP_UUID128),
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.characteristics = (struct ble_gatt_chr_def[])
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{
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{
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.uuid = BLE_UUID128_DECLARE(BLE_SVC_SPP_CHR_UUID128_RX),
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.access_cb = ble_svc_chr_access_spp,
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.flags = BLE_GATT_CHR_F_WRITE_NO_RSP,
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},
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{
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.uuid = BLE_UUID128_DECLARE(BLE_SVC_SPP_CHR_UUID128_TX),
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.access_cb = ble_svc_chr_access_spp,
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.val_handle = &uart_tx_handle,
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.flags = BLE_GATT_CHR_F_NOTIFY,
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}, {
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0, /* No more characteristics in this service */
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},
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}
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},{
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0, /* No more services */
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},
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};
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static int ble_svc_chr_access_spp(uint16_t conn_handle, uint16_t attr_handle,
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struct ble_gatt_access_ctxt *ctxt, void *arg)
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{
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uint8_t data[256] = {0};
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volatile uint16_t uuid;
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uint16_t om_len;
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int rc;
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if(ctxt->op == BLE_GATT_ACCESS_OP_WRITE_CHR) {
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uuid = ble_uuid_u16(ctxt->chr->uuid);
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om_len = OS_MBUF_PKTLEN(ctxt->om);
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rc = ble_hs_mbuf_to_flat(ctxt->om, data, sizeof(data), &om_len);
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if (rc != 0) {
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assert(0);
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return BLE_ATT_ERR_UNLIKELY;
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}
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/* UART send data */
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ble_svc_spp_uart_write(data, om_len);
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}
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else if(ctxt->op == BLE_GATT_ACCESS_OP_READ_CHR) {
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uuid = ble_uuid_u16(ctxt->chr->uuid);
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}
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return 0;
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}
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__WEAK int ble_svc_spp_uart_write(uint8_t *p, uint32_t len)
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{
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return 0;
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}
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int ble_svc_spp_send_notify(uint16_t conn_handle, uint8_t *pdata, uint32_t len)
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{
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int rc = 0;
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struct os_mbuf *om = ble_hs_mbuf_from_flat(pdata, len);
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if(om == NULL){
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return BLE_HS_ENOMEM;
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}
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rc = ble_gatts_notify_custom(conn_handle, uart_tx_handle, om);
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return rc;
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}
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int ble_svc_spp_init(void)
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{
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int rc = 0;
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rc = ble_gatts_count_cfg(ble_svc_uart_spp_defs);
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if (rc != 0) {
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return rc;
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}
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rc = ble_gatts_add_svcs(ble_svc_uart_spp_defs);
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if (rc != 0) {
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return rc;
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}
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return 0;
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}
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