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This commit is contained in:
rusEfi 2014-09-20 17:02:48 -05:00
parent 4aaf627e5b
commit c746528767
1 changed files with 79 additions and 3 deletions
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82
firmware/hw_layer/max31855.c
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@ -15,15 +15,19 @@
#include "max31855.h"
#include "pin_repository.h"
#include "settings.h"
#include "hardware.h"
// that's for swap
#include "tunerstudio_algo.h"
#if EFI_MAX_31855
static Logging logger;
static SPIConfig spiConfig[MAX31855_CS_COUNT];
static void showEgtInfo(board_configuration_s *boardConfiguration) {
printSpiState(&logger, boardConfiguration);
for (int i = 0; i < MAX31855_CS_COUNT; i++) {
if (boardConfiguration->max31855_cs[i] != GPIO_NONE) {
scheduleMsg(&logger, "%d ETG @ %s", i, hwPortname(boardConfiguration->max31855_cs[i]));
@ -33,18 +37,90 @@ static void showEgtInfo(board_configuration_s *boardConfiguration) {
}
}
static uint32_t rx_buff;
// bits D17 and D3 are always expected to be zero
#define MC_RESERVED_BITS 0x20008
#define MC_OPEN_BIT 1
#define MC_GND_BIT 2
#define MC_VCC_BIT 4
typedef enum {
MC_OK = 0, MC_INVALID = 1, MC_OPEN = 2, MC_SHORT_GND = 3, MC_SHORT_VCC = 4,
} max_32855_code;
static const char * getMcCode(max_32855_code code) {
switch (code) {
case MC_OK:
return "Ok";
case MC_OPEN:
return "Open";
case MC_SHORT_GND:
return "short gnd";
case MC_SHORT_VCC:
return "short VCC";
default:
return "invalid";
}
}
static void egtRead(board_configuration_s *boardConfiguration) {
scheduleMsg(&logger, "Reading egt");
SPIDriver *driver = getSpiDevice(SPI_DEVICE_3);
spiStart(driver, &spiConfig[0]);
spiSelect(driver);
spiReceive(driver, 4, &rx_buff);
spiUnselect(driver);
spiStop(driver);
rx_buff = SWAP_UINT32(rx_buff);
max_32855_code code;
if ((rx_buff & MC_RESERVED_BITS) != 0) {
code = MC_INVALID;
} else if ((rx_buff & MC_OPEN_BIT) != 0) {
code = MC_OPEN;
} else if ((rx_buff & MC_GND_BIT) != 0) {
code = MC_SHORT_GND;
} else if ((rx_buff & MC_VCC_BIT) != 0) {
code = MC_SHORT_VCC;
} else {
code = MC_OK;
}
scheduleMsg(&logger, "egt %x code=%d %s", rx_buff, code, getMcCode(code));
if (code != MC_INVALID) {
int refBits = ((rx_buff & 0xFFFF) / 16); // bits 15:4
float refTemp = refBits / 16.0;
scheduleMsg(&logger, "reference temperature %f", refTemp);
}
}
void initMax31855(board_configuration_s *boardConfiguration) {
initLogging(&logger, "EGT");
addConsoleActionP("egtinfo", (VoidPtr) showEgtInfo, boardConfiguration);
addConsoleActionP("egtread", (VoidPtr) egtRead, boardConfiguration);
turnOnSpi(SPI_DEVICE_3);
for (int i = 0; i < MAX31855_CS_COUNT; i++) {
if (boardConfiguration->max31855_cs[i] != GPIO_NONE) {
initSpiCs(&spiConfig[i], boardConfiguration->max31855_cs[i]);
spiConfig[i].cr1 = SPI_BaudRatePrescaler_8;
}
}
}
#endif /* EFI_MAX_31855 */