bissen21/Marlin_Firmware
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Very minor SPI speedup

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This commit is contained in:
Scott Lahteine
2019-02-20 04:00:49 -06:00
parent 422dd6666e
commit 758c6c9464
3 changed files with 47 additions and 60 deletions
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24
Marlin/src/HAL/HAL_LPC1768/HAL_spi.cpp
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@ -81,17 +81,15 @@
uint8_t spiRec() { return spiTransfer(0xFF); }
void spiRead(uint8_t*buf, uint16_t nbyte) {
if (nbyte)
for (int i = 0; i < nbyte; i++)
buf[i] = spiTransfer(0xFF);
for (int i = 0; i < nbyte; i++)
buf[i] = spiTransfer(0xFF);
}
void spiSend(uint8_t b) { (void)spiTransfer(b); }
void spiSend(const uint8_t* buf, size_t n) {
if (n)
for (uint16_t i = 0; i < n; i++)
(void)spiTransfer(buf[i]);
void spiSend(const uint8_t* buf, size_t nbyte) {
for (uint16_t i = 0; i < nbyte; i++)
(void)spiTransfer(buf[i]);
}
void spiSendBlock(uint8_t token, const uint8_t* buf) {
@ -178,15 +176,14 @@
void spiSend(uint8_t b) { doio(b); }
void spiSend(const uint8_t* buf, size_t n) {
if (n)
for (uint16_t i = 0; i < n; i++) doio(buf[i]);
void spiSend(const uint8_t* buf, size_t nbyte) {
for (uint16_t i = 0; i < nbyte; i++) doio(buf[i]);
}
void spiSend(uint32_t chan, byte b) {
}
void spiSend(uint32_t chan, const uint8_t* buf, size_t n) {
void spiSend(uint32_t chan, const uint8_t* buf, size_t nbyte) {
}
// Read single byte from SPI
@ -195,9 +192,8 @@
uint8_t spiRec(uint32_t chan) { return 0; }
// Read from SPI into buffer
void spiRead(uint8_t*buf, uint16_t nbyte) {
if (nbyte)
for (int i = 0; i < nbyte; i++) buf[i] = doio(0xff);
void spiRead(uint8_t *buf, uint16_t nbyte) {
for (uint16_t i = 0; i < nbyte; i++) buf[i] = doio(0xFF);
}
static uint8_t spiTransfer(uint8_t b) {