GNSS for CHESTER-U1 and CHESTER-M

1

Hi,

The latest baseline specifies GNSS use based on the hardware configuration. For CHESTER-U1 devices, GNSS is automatically enabled through the LTE v2 module, while CHESTER-M devices use the SAM-M8Q module. However, some legacy applications on CHESTER-U1 still rely on the SAM-M8Q, developed before the LTE v2 GNSS subsystem was available. To ensure backward compatibility, the following code in ctr_gnss.c must be updated to allow CHESTER-U1 applications to select either the LTE v2 modem GNSS or the SAM-M8Q module.

#if defined(CONFIG_CTR_GNSS_M8)
	if (product_family == CTR_INFO_PRODUCT_FAMILY_CHESTER_M) {
		ctr_gnss_m8_set_handler(m_user_cb, m_user_data);
		return ctr_gnss_m8_start();
	}
#endif

#if defined(CONFIG_CTR_LTE_V2_GNSS)
	if (product_family == CTR_INFO_PRODUCT_FAMILY_CHESTER_U1) {
		ctr_lte_v2_gnss_set_handler(lte_v2_gnss_handler, NULL);
		return ctr_lte_v2_gnss_set_enable(true);
	}
#endif

For example, we could simply remove the product_family verification:

#if defined(CONFIG_CTR_GNSS_M8)
	ctr_gnss_m8_set_handler(m_user_cb, m_user_data);
	return ctr_gnss_m8_start();
#endif

#if defined(CONFIG_CTR_LTE_V2_GNSS)
	ctr_lte_v2_gnss_set_handler(lte_v2_gnss_handler, NULL);
	return ctr_lte_v2_gnss_set_enable(true);
#endif

Best,
David