SNU - Second Stage Bootloader for WiFi NINA enabled boards #512
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Tested with |
…U bootloader makes no sense
… a NINA W102 module
… maximum size which is available for the SNU second stage bootloader. In case of the MKR VIDOR 4000 the necessary FPGA bitstream is injected in the binary image above the usable flash of the MCU by the build system. When using the SNU for the MKR VIDOR 4000 we have to rely on the bitstream being already in place (not a unrealistic assumption, given that the SNU is compiled into a complete Vidor binary + fpga application).
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Successfully tested by @giulcioffi |
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SNU is a second stage bootloader for SAMD boards with WiFi NINA module (MKR WIFI 1010 and MKR VIDOR 4000). The SNU is loaded by the ATSAMD21G18 bootloader and in turn loads the firmware image stored in WiFi NINA W102 module.
Memory map of ATSAMD21G18 flash space with bootloader, SNU and application:
