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chip/pn53x: set register directly if mask cover whole value.

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This commit is contained in:
Romuald Conty 2011-02-01 21:38:25 +00:00
parent 58ad2a5760
commit 91419f8ad3
1 changed files with 9 additions and 5 deletions
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14
libnfc/chips/pn53x.c
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@ -250,11 +250,15 @@ pn53x_set_reg (nfc_device_t * pnd, uint16_t ui16Reg, uint8_t ui8SymbolMask, uint
abtCmd[2] = ui16Reg >> 8;
abtCmd[3] = ui16Reg & 0xff;
if (!pn53x_get_reg (pnd, ui16Reg, &ui8Current))
return false;
abtCmd[4] = ui8Value | (ui8Current & (~ui8SymbolMask));
return (abtCmd[4] != ui8Current) ? pn53x_transceive (pnd, abtCmd, sizeof (pncmd_set_register), NULL, NULL) : true;
if (ui8SymbolMask != 0xff) {
if (!pn53x_get_reg (pnd, ui16Reg, &ui8Current))
return false;
abtCmd[4] = ui8Value | (ui8Current & (~ui8SymbolMask));
return (abtCmd[4] != ui8Current) ? pn53x_transceive (pnd, abtCmd, sizeof (pncmd_set_register), NULL, NULL) : true;
} else {
abtCmd[4] = ui8Value;
return pn53x_transceive (pnd, abtCmd, sizeof (pncmd_set_register), NULL, NULL);
}
}
bool