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[atm90e32] Only read 1 register per SPI transaction per datasheet. (#10258)

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This commit is contained in:
Ben Winslow
2025-08-18 23:45:30 -04:00
committed by Jesse Hills
parent fd07e1d979
commit 225de226b0
2 changed files with 5 additions and 17 deletions
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21
esphome/components/atm90e32/atm90e32.cpp
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@@ -382,20 +382,15 @@ float ATM90E32Component::get_setup_priority() const { return setup_priority::IO;
// R/C registers can conly be cleared after the LastSPIData register is updated (register 78H)
// Peakdetect period: 05H. Bit 15:8 are PeakDet_period in ms. 7:0 are Sag_period
// Default is 143FH (20ms, 63ms)
uint16_t ATM90E32Component::read16_transaction_(uint16_t a_register) {
uint16_t ATM90E32Component::read16_(uint16_t a_register) {
this->enable();
delay_microseconds_safe(1); // min delay between CS low and first SCK is 200ns - 1us is plenty
uint8_t addrh = (1 << 7) | ((a_register >> 8) & 0x03);
uint8_t addrl = (a_register & 0xFF);
uint8_t data[4] = {addrh, addrl, 0x00, 0x00};
this->transfer_array(data, 4);
uint16_t output = encode_uint16(data[2], data[3]);
ESP_LOGVV(TAG, "read16_ 0x%04" PRIX16 " output 0x%04" PRIX16, a_register, output);
return output;
}
uint16_t ATM90E32Component::read16_(uint16_t a_register) {
this->enable();
delay_microseconds_safe(1); // min delay between CS low and first SCK is 200ns - 1us is plenty
uint16_t output = this->read16_transaction_(a_register);
delay_microseconds_safe(1); // allow the last clock to propagate before releasing CS
this->disable();
delay_microseconds_safe(1); // meet minimum CS high time before next transaction
@@ -403,14 +398,8 @@ uint16_t ATM90E32Component::read16_(uint16_t a_register) {
}
int ATM90E32Component::read32_(uint16_t addr_h, uint16_t addr_l) {
this->enable();
delay_microseconds_safe(1);
const uint16_t val_h = this->read16_transaction_(addr_h);
delay_microseconds_safe(1);
const uint16_t val_l = this->read16_transaction_(addr_l);
delay_microseconds_safe(1);
this->disable();
delay_microseconds_safe(1);
const uint16_t val_h = this->read16_(addr_h);
const uint16_t val_l = this->read16_(addr_l);
const int32_t val = (val_h << 16) | val_l;
ESP_LOGVV(TAG,

1
esphome/components/atm90e32/atm90e32.h
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@@ -140,7 +140,6 @@ class ATM90E32Component : public PollingComponent,
number::Number *ref_currents_[3]{nullptr, nullptr, nullptr};
#endif
uint16_t read16_(uint16_t a_register);
uint16_t read16_transaction_(uint16_t a_register);
int read32_(uint16_t addr_h, uint16_t addr_l);
void write16_(uint16_t a_register, uint16_t val, bool validate = true);
float get_local_phase_voltage_(uint8_t phase);