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| author | Jean-François Milants <jf@codingfield.com> | 2023-05-07 18:24:34 +0200 |
|---|---|---|
| committer | JF <JF002@users.noreply.github.com> | 2023-06-04 17:22:27 +0200 |
| commit | 4c0f897953aa8d478f3c941e75d3b2eb5611531d (patch) | |
| tree | 28c926cf8e0319ce5b5369382af6dbf935e17918 /src/drivers/SpiNorFlash.cpp | |
| parent | 2fa3aaa1617849dd29fe55c844d5250df0cba955 (diff) | |
Power optimization - Improve SPI sleep mode
Ensure that all pins are set to their default configuration during sleep mode.
Disable the workaround for FTPAN58 (SPI freezes when transfering a single byte) at the end of the transfer. This disables the resources needed for the workaround.
Those changes reduce the power usage by 430-490µA.
Diffstat (limited to 'src/drivers/SpiNorFlash.cpp')
| -rw-r--r-- | src/drivers/SpiNorFlash.cpp | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/drivers/SpiNorFlash.cpp b/src/drivers/SpiNorFlash.cpp index 28f82fe6..525b812c 100644 --- a/src/drivers/SpiNorFlash.cpp +++ b/src/drivers/SpiNorFlash.cpp @@ -10,6 +10,7 @@ SpiNorFlash::SpiNorFlash(Spi& spi) : spi {spi} { } void SpiNorFlash::Init() { + spi.Init(); device_id = ReadIdentificaion(); NRF_LOG_INFO("[SpiNorFlash] Manufacturer : %d, Memory type : %d, memory density : %d", device_id.manufacturer, @@ -23,10 +24,12 @@ void SpiNorFlash::Uninit() { void SpiNorFlash::Sleep() { auto cmd = static_cast<uint8_t>(Commands::DeepPowerDown); spi.Write(&cmd, sizeof(uint8_t)); + spi.Sleep(); NRF_LOG_INFO("[SpiNorFlash] Sleep") } void SpiNorFlash::Wakeup() { + spi.Wakeup(); // send Commands::ReleaseFromDeepPowerDown then 3 dummy bytes before reading Device ID static constexpr uint8_t cmdSize = 4; uint8_t cmd[cmdSize] = {static_cast<uint8_t>(Commands::ReleaseFromDeepPowerDown), 0x01, 0x02, 0x03}; |