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Makes SPI edge changes more obvious (#1056)

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Rising and Falling mean the opposite when active is set high vs low. Leading and trailing makes much more sense.

Closes #925
This commit is contained in:
Thad House
2018-05-14 18:16:36 -07:00
committed by Peter Johnson
parent 560123ab7d
commit ab70220ecf
9 changed files with 57 additions and 7 deletions
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2
wpilibc/src/main/native/cpp/ADXL345_SPI.cpp
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@@ -23,7 +23,7 @@ ADXL345_SPI::ADXL345_SPI(SPI::Port port, ADXL345_SPI::Range range)
: m_spi(port) {
m_spi.SetClockRate(500000);
m_spi.SetMSBFirst();
m_spi.SetSampleDataOnFalling();
m_spi.SetSampleDataOnTrailingEdge();
m_spi.SetClockActiveLow();
m_spi.SetChipSelectActiveHigh();

2
wpilibc/src/main/native/cpp/ADXL362.cpp
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@@ -47,7 +47,7 @@ ADXL362::ADXL362(Range range) : ADXL362(SPI::Port::kOnboardCS1, range) {}
ADXL362::ADXL362(SPI::Port port, Range range) : m_spi(port) {
m_spi.SetClockRate(3000000);
m_spi.SetMSBFirst();
m_spi.SetSampleDataOnFalling();
m_spi.SetSampleDataOnTrailingEdge();
m_spi.SetClockActiveLow();
m_spi.SetChipSelectActiveLow();

2
wpilibc/src/main/native/cpp/ADXRS450_Gyro.cpp
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@@ -64,7 +64,7 @@ ADXRS450_Gyro::ADXRS450_Gyro() : ADXRS450_Gyro(SPI::kOnboardCS0) {}
ADXRS450_Gyro::ADXRS450_Gyro(SPI::Port port) : m_spi(port) {
m_spi.SetClockRate(3000000);
m_spi.SetMSBFirst();
m_spi.SetSampleDataOnRising();
m_spi.SetSampleDataOnLeadingEdge();
m_spi.SetClockActiveHigh();
m_spi.SetChipSelectActiveLow();

18
wpilibc/src/main/native/cpp/SPI.cpp
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@@ -174,6 +174,24 @@ void SPI::SetLSBFirst() {
HAL_SetSPIOpts(m_port, m_msbFirst, m_sampleOnTrailing, m_clk_idle_high);
}
/**
* Configure that the data is stable on the leading edge and the data
* changes on the trailing edge.
*/
void SPI::SetSampleDataOnLeadingEdge() {
m_sampleOnTrailing = false;
HAL_SetSPIOpts(m_port, m_msbFirst, m_sampleOnTrailing, m_clk_idle_high);
}
/**
* Configure that the data is stable on the trailing edge and the data
* changes on the leading edge.
*/
void SPI::SetSampleDataOnTrailingEdge() {
m_sampleOnTrailing = true;
HAL_SetSPIOpts(m_port, m_msbFirst, m_sampleOnTrailing, m_clk_idle_high);
}
/**
* Configure that the data is stable on the falling edge and the data
* changes on the rising edge.