CCSBK::CCSBK(const unsigned char* bytes) : m_CSBKO(CSBKO_NONE), m_FID(0x00U), m_bsId(0U), m_srcId(0U), m_dstId(0U), m_valid(false) { assert(bytes != NULL); CBPTC19696 bptc; unsigned char data[12U]; bptc.decode(bytes, data); data[10U] ^= CSBK_CRC_MASK[0U]; data[11U] ^= CSBK_CRC_MASK[1U]; m_valid = CCRC::checkCCITT16(data, 12U); m_CSBKO = CSBKO(data[0U] & 0x3FU); m_FID = data[1U]; switch (m_CSBKO) { case CSBKO_BSDWNACT: m_bsId = data[4U] << 16 | data[5U] << 8 | data[6U]; m_srcId = data[7U] << 16 | data[8U] << 8 | data[9U]; CUtils::dump("Download Activate CSBK", data, 12U); break; case CSBKO_UUVREQ: m_dstId = data[4U] << 16 | data[5U] << 8 | data[6U]; m_srcId = data[7U] << 16 | data[8U] << 8 | data[9U]; CUtils::dump("Unit to Unit Service Request CSBK", data, 12U); break; case CSBKO_UUANSRSP: m_dstId = data[4U] << 16 | data[5U] << 8 | data[6U]; m_srcId = data[7U] << 16 | data[8U] << 8 | data[9U]; CUtils::dump("Unit to Unit Service Answer Response CSBK", data, 12U); break; case CSBKO_PRECCSBK: m_dstId = data[4U] << 16 | data[5U] << 8 | data[6U]; m_srcId = data[7U] << 16 | data[8U] << 8 | data[9U]; CUtils::dump("Preamble CSBK", data, 12U); break; case CSBKO_NACKRSP: m_srcId = data[4U] << 16 | data[5U] << 8 | data[6U]; m_dstId = data[7U] << 16 | data[8U] << 8 | data[9U]; CUtils::dump("Negative Acknowledge Response CSBK", data, 12U); break; default: CUtils::dump("Unhandled CSBK type", data, 12U); break; } }
bool CDMRCSBK::put(const unsigned char* bytes) { assert(bytes != NULL); CBPTC19696 bptc; bptc.decode(bytes, m_data); m_data[10U] ^= CSBK_CRC_MASK[0U]; m_data[11U] ^= CSBK_CRC_MASK[1U]; bool valid = CCRC::checkCCITT162(m_data, 12U); if (!valid) return false; // Restore the checksum m_data[10U] ^= CSBK_CRC_MASK[0U]; m_data[11U] ^= CSBK_CRC_MASK[1U]; m_CSBKO = CSBKO(m_data[0U] & 0x3FU); m_FID = m_data[1U]; switch (m_CSBKO) { case CSBKO_BSDWNACT: m_GI = false; m_bsId = m_data[4U] << 16 | m_data[5U] << 8 | m_data[6U]; m_srcId = m_data[7U] << 16 | m_data[8U] << 8 | m_data[9U]; m_dataContent = false; m_CBF = 0U; CUtils::dump(1U, "Downlink Activate CSBK", m_data, 12U); break; case CSBKO_UUVREQ: m_GI = false; m_dstId = m_data[4U] << 16 | m_data[5U] << 8 | m_data[6U]; m_srcId = m_data[7U] << 16 | m_data[8U] << 8 | m_data[9U]; m_dataContent = false; m_CBF = 0U; CUtils::dump(1U, "Unit to Unit Service Request CSBK", m_data, 12U); break; case CSBKO_UUANSRSP: m_GI = false; m_dstId = m_data[4U] << 16 | m_data[5U] << 8 | m_data[6U]; m_srcId = m_data[7U] << 16 | m_data[8U] << 8 | m_data[9U]; m_dataContent = false; m_CBF = 0U; CUtils::dump(1U, "Unit to Unit Service Answer Response CSBK", m_data, 12U); break; case CSBKO_PRECCSBK: m_GI = (m_data[2U] & 0x40U) == 0x40U; m_dstId = m_data[4U] << 16 | m_data[5U] << 8 | m_data[6U]; m_srcId = m_data[7U] << 16 | m_data[8U] << 8 | m_data[9U]; m_dataContent = (m_data[2U] & 0x80U) == 0x80U; m_CBF = m_data[3U]; CUtils::dump(1U, "Preamble CSBK", m_data, 12U); break; case CSBKO_NACKRSP: m_GI = false; m_srcId = m_data[4U] << 16 | m_data[5U] << 8 | m_data[6U]; m_dstId = m_data[7U] << 16 | m_data[8U] << 8 | m_data[9U]; m_dataContent = false; m_CBF = 0U; CUtils::dump(1U, "Negative Acknowledge Response CSBK", m_data, 12U); break; default: m_GI = false; m_srcId = 0U; m_dstId = 0U; m_dataContent = false; m_CBF = 0U; CUtils::dump("Unhandled CSBK type", m_data, 12U); return true; } return true; }