diff options
Diffstat (limited to 'src/drivers/InternalFlash.cpp')
-rw-r--r-- | src/drivers/InternalFlash.cpp | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/src/drivers/InternalFlash.cpp b/src/drivers/InternalFlash.cpp new file mode 100644 index 00000000..bc89ff1a --- /dev/null +++ b/src/drivers/InternalFlash.cpp @@ -0,0 +1,39 @@ +#include <sdk/modules/nrfx/mdk/nrf.h> +#include "InternalFlash.h" +using namespace Pinetime::Drivers; + +void InternalFlash::ErasePage(uint32_t address) { + // Enable erase. + NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Een; + __ISB(); + __DSB(); + + // Erase the page + NRF_NVMC->ERASEPAGE = address; + Wait(); + + // Disable erase + NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Ren; + __ISB(); + __DSB(); +} + +void InternalFlash::WriteWord(uint32_t address, uint32_t value) { + // Enable write. + NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Wen; + __ISB(); + __DSB(); + + // Write word + *(uint32_t*)address = value; + Wait(); + + // Disable write + NRF_NVMC->CONFIG = NVMC_CONFIG_WEN_Ren; + __ISB(); + __DSB(); +} + +void InternalFlash::Wait() { + while (NRF_NVMC->READY == NVMC_READY_READY_Busy) {;} +} |