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fix: avoid repeated SDRAM allocator setup #1117

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fix: avoid repeated SDRAM allocator setup #1117

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9 changes: 8 additions & 1 deletion libraries/Portenta_SDRAM/src/SDRAM.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -29,6 +29,7 @@ static void MPU_Config() {
}

int SDRAMClass::begin(uint32_t start_address) {
static uint32_t malloc_start_address = 0;

if (FMC_SDRAM_DEVICE->SDCMR == 0x00000000U) {
bool ret = sdram_init();
Expand All @@ -51,7 +52,13 @@ int SDRAMClass::begin(uint32_t start_address) {
}

if (start_address) {
malloc_addblock((void*)start_address, SDRAM_END_ADDRESS - start_address);
if (malloc_start_address && malloc_start_address != start_address) {
return 0;
}
if (!malloc_start_address) {
malloc_addblock((void*)start_address, SDRAM_END_ADDRESS - start_address);
malloc_start_address = start_address;
}
}

return 1;
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