bool BME280::WriteSettings()
{
uint8_t ctrlHum, ctrlMeas, config;
CalculateRegisters(ctrlHum, ctrlMeas, config);
WriteRegister(CTRL_HUM_ADDR, ctrlHum);
WriteRegister(CTRL_MEAS_ADDR, ctrlMeas);
WriteRegister(CONFIG_ADDR, config);
}
int BattOn(int vbhIn, int vblIn, int vbpIn)
{
uint8 data[20] = { 0 };
int i;
uint16 vbhTarget;
uint16 vblTarget;
uint16 vbpTarget;
uint8 vbhHex;
uint8 vblHex;
uint8 vbpHex;
uint8 calVbhHex;
uint8 calVblHex;
uint8 calVbpHex;
/* Argument checking */
if (vblIn > 0) {
mvOsPrintf(" VBL must be negative or zero\n");
return -1;
}
if (vbhIn > 0) {
mvOsPrintf(" VBH must be negative or zero\n");
return -1;
}
if (vbpIn < 0) {
mvOsPrintf(" VBP must be positive or zero\n");
return -1;
}
if (vblIn - vbhIn < 5 && vblIn != 0) {
mvOsPrintf(" VBH must be at least 5V more negative than VBL\n");
return -1;
}
/* 16 no-ops to clear MPI buffer */
for (i = 0; i < 16; i++)
data[i] = VP880_NO_OP;
VpMpiCmd(gDev1Id, EC_BOTH, VP880_NO_OP, 16, data);
VpMpiCmd(gDev2Id, EC_BOTH, VP880_NO_OP, 16, data);
/* Read RCN/PCN and check that the devices are what we expect */
VpMpiCmd(gDev1Id, EC_BOTH, VP880_DEVTYPE_CMD, VP880_DEVTYPE_LEN, data);
if (data[0] != VP880_REV_JE || data[1] != VP880_DEV_PCN_88506) {
mvOsPrintf("Invalid device 1, RCN/PCN 0x%02X%02X\n", data[0], data[1]);
return -1;
}
VpMpiCmd(gDev2Id, EC_BOTH, VP880_DEVTYPE_CMD, VP880_DEVTYPE_LEN, data);
if (data[0] != VP880_REV_JE || data[1] != VP880_DEV_PCN_88506) {
mvOsPrintf("Invalid device 2, RCN/PCN 0x%02X%02X\n", data[0], data[1]);
return -1;
}
/* Run MPI checks on both devices to make sure that it's safe to start
* programming the devices. If the signal integrity is bad, it could be
* dangerous to continue. */
if (MpiTest(gDev1Id) < 0 || MpiTest(gDev2Id) < 0)
return -1;
/* HW reset */
VpMpiCmd(gDev1Id, EC_BOTH, VP880_HW_RESET_CMD, 0, NULL);
VpMpiCmd(gDev2Id, EC_BOTH, VP880_HW_RESET_CMD, 0, NULL);
/* Configure 8.192MHz mclk */
data[0] = 0x8A;
VpMpiCmd(gDev1Id, EC_BOTH, VP880_MCLK_CNT_WRT, VP880_MCLK_CNT_LEN, data);
VpMpiCmd(gDev2Id, EC_BOTH, VP880_MCLK_CNT_WRT, VP880_MCLK_CNT_LEN, data);
/* Unmask CFAIL */
data[0] = 0xFF & ~(VP880_CFAIL_MASK);
data[1] = 0xFF;
VpMpiCmd(gDev1Id, EC_BOTH, VP880_INT_MASK_WRT, VP880_INT_MASK_LEN, data);
VpMpiCmd(gDev2Id, EC_BOTH, VP880_INT_MASK_WRT, VP880_INT_MASK_LEN, data);
/* Make sure CFAIL clears on both devices */
for (i = 0; i < 11; i++) {
VpMpiCmd(gDev1Id, EC_BOTH, VP880_UL_SIGREG_RD, VP880_UL_SIGREG_LEN, data);
if ((data[0] & VP880_CFAIL_MASK) == 0)
break;
if (i == 10) {
mvOsPrintf("Couldn't clear CFAIL on dev 1");
return -1;
}
mvOsDelay(10);
}
for (i = 0; i < 11; i++) {
VpMpiCmd(gDev2Id, EC_BOTH, VP880_UL_SIGREG_RD, VP880_UL_SIGREG_LEN, data);
if ((data[0] & VP880_CFAIL_MASK) == 0)
break;
if (i == 10) {
mvOsPrintf("Couldn't clear CFAIL on dev 2");
return -1;
}
mvOsDelay(10);
}
/* Set the switcher timings */
data[0] = 0xB2; /* Device defaults */
data[1] = 0x00;
data[2] = 0xB1;
data[3] = 0x00;
data[4] = 0xB0;
data[5] = 0x40;
VpMpiCmd(gDev1Id, EC_BOTH, VP880_INT_SWREG_PARAM_WRT, VP880_INT_SWREG_PARAM_LEN, data);
VpMpiCmd(gDev2Id, EC_BOTH, VP880_INT_SWREG_PARAM_WRT, VP880_INT_SWREG_PARAM_LEN, data);
/* ICR2 settings: c_tip_on and c_ring_on for measuring in disconnect,
* 150V battery limit */
data[0] = VP880_ICR2_TIP_SENSE | VP880_ICR2_RING_SENSE;
data[1] = VP880_ICR2_TIP_SENSE | VP880_ICR2_RING_SENSE;
data[2] = VP880_ICR2_SWY_LIM_CTRL | VP880_ICR2_SWY_LIM_CTRL1;
data[3] = VP880_ICR2_SWY_LIM_CTRL | VP880_ICR2_SWY_LIM_CTRL1;
VpMpiCmd(gDev1Id, EC_BOTH, VP880_ICR2_WRT, VP880_ICR2_LEN, data);
VpMpiCmd(gDev2Id, EC_BOTH, VP880_ICR2_WRT, VP880_ICR2_LEN, data);
/* ICR3 settings: VREF ctrl, "line block control circuitry override" for
* measuring in disconnect */
data[0] = VP880_ICR3_VREF_CTRL | VP880_ICR3_LINE_CTRL;
data[1] = VP880_ICR3_VREF_CTRL | VP880_ICR3_LINE_CTRL;
data[2] = 0;
data[3] = 0;
VpMpiCmd(gDev1Id, EC_BOTH, VP880_ICR3_WRT, VP880_ICR3_LEN, data);
VpMpiCmd(gDev2Id, EC_BOTH, VP880_ICR3_WRT, VP880_ICR3_LEN, data);
/* ICR4 settings: voice ADC override for measuring in disconnect */
data[0] = VP880_ICR4_VOICE_ADC_CTRL;
data[1] = VP880_ICR4_VOICE_ADC_CTRL;
data[2] = 0;
data[3] = 0;
VpMpiCmd(gDev1Id, EC_BOTH, VP880_ICR4_WRT, VP880_ICR4_LEN, data);
VpMpiCmd(gDev2Id, EC_BOTH, VP880_ICR4_WRT, VP880_ICR4_LEN, data);
/* Wait for VREF to stabilize */
mvOsDelay(20);
/* Disable auto system state ctrl, zero cross ringing, auto clock fail
* switching, and thermal fault switching. Enable auto battery shutdown */
data[0] = VP880_ACFS_DIS | VP880_ATFS_DIS | VP880_ZXR_DIS | VP880_AUTO_SSC_DIS | VP880_AUTO_BAT_SHUTDOWN_EN;
VpMpiCmd(gDev1Id, EC_BOTH, VP880_SS_CONFIG_WRT, VP880_SS_CONFIG_LEN, data);
VpMpiCmd(gDev2Id, EC_BOTH, VP880_SS_CONFIG_WRT, VP880_SS_CONFIG_LEN, data);
/* Zero out signal generator params for the channel (ch2 on dev1) that will
* be in ringing */
for (i = 0; i < VP880_SIGA_PARAMS_LEN; i++)
data[i] = 0;
VpMpiCmd(gDev1Id, EC_2, VP880_SIGA_PARAMS_WRT, VP880_SIGA_PARAMS_LEN, data);
/* Calculate the register settings. Calculations are performed based on
* units of cV and unsigned, for example -65.3 V == 6530 */
vbhTarget = (ABS(vbhIn) * 100);
vblTarget = (ABS(vblIn) * 100);
vbpTarget = (ABS(vbpIn) * 100);
DBG("VBH Calibration:\n");
CalculateRegisters(vbhTarget, gVbhCalAry, &vbhHex, &calVbhHex);
DBG("VBH results, vbhHex %02X, calVbhHex %02X\n\n", vbhHex, calVbhHex);
DBG("VBL Calibration:\n");
CalculateRegisters(vblTarget, gVblCalAry, &vblHex, &calVblHex);
DBG("VBL results, vblHex %02X, calVblHex %02X\n\n", vblHex, calVblHex);
DBG("VBP Calibration:\n");
CalculateRegisters(vbpTarget, gVbpCalAry, &vbpHex, &calVbpHex);
DBG("VBP results, vbpHex %02X, calVbpHex %02X\n\n", vbpHex, calVbpHex);
/* Set up switching regulator params - fixed, programmable */
data[0] = VP880_FLYBACK_MODE | VP880_ZRING_TRACK_DIS | VP880_YRING_TRACK_DIS;
data[1] = VP880_SWY_AUTOPOWER_DIS | vbhHex;
data[2] = VP880_SWZ_AUTOPOWER_DIS | vblHex;
VpMpiCmd(gDev1Id, EC_BOTH, VP880_REGULATOR_PARAM_WRT, VP880_REGULATOR_PARAM_LEN, data);
data[0] = VP880_FLYBACK_MODE | VP880_ZRING_TRACK_DIS | VP880_YRING_TRACK_DIS;
data[1] = VP880_SWY_AUTOPOWER_DIS | vbpHex;
data[2] = VP880_SWZ_AUTOPOWER_DIS;
VpMpiCmd(gDev2Id, EC_BOTH, VP880_REGULATOR_PARAM_WRT, VP880_REGULATOR_PARAM_LEN, data);
/* Set battery calibration registers */
data[1] = 0;
data[0] = calVbhHex << 3;
VpMpiCmd(gDev1Id, EC_1, VP880_BAT_CALIBRATION_WRT, VP880_BAT_CALIBRATION_LEN, data);
data[0] = calVblHex << 3;
VpMpiCmd(gDev1Id, EC_2, VP880_BAT_CALIBRATION_WRT, VP880_BAT_CALIBRATION_LEN, data);
data[0] = calVbpHex << 3;
VpMpiCmd(gDev2Id, EC_1, VP880_BAT_CALIBRATION_WRT, VP880_BAT_CALIBRATION_LEN, data);
/* Disable high-pass filter, cut off TX/RX */
data[0] = VP880_HIGH_PASS_DIS | VP880_CUT_TXPATH | VP880_CUT_RXPATH;
VpMpiCmd(gDev1Id, EC_BOTH, VP880_OP_COND_WRT, VP880_OP_COND_LEN, data);
VpMpiCmd(gDev2Id, EC_BOTH, VP880_OP_COND_WRT, VP880_OP_COND_LEN, data);
/* Set to linear mode, use default filters */
data[0] = VP880_LINEAR_CODEC | VP880_DEFAULT_OP_FUNC_MODE;
VpMpiCmd(gDev1Id, EC_BOTH, VP880_OP_FUNC_WRT, VP880_OP_FUNC_LEN, data);
VpMpiCmd(gDev2Id, EC_BOTH, VP880_OP_FUNC_WRT, VP880_OP_FUNC_LEN, data);
/* Set default DISN (00) */
data[0] = VP880_DEFAULT_DISN_GAIN;
VpMpiCmd(gDev1Id, EC_BOTH, VP880_DISN_WRT, VP880_DISN_LEN, data);
VpMpiCmd(gDev2Id, EC_BOTH, VP880_DISN_WRT, VP880_DISN_LEN, data);
mvOsDelay(50);
/*** Bring up HBAT ***/
/* Set HBAT switcher to low power. */
data[0] = 0;
if (vbhTarget != 0)
data[0] |= VP880_SWY_LP;
VpMpiCmd(gDev1Id, EC_BOTH, VP880_REGULATOR_CTRL_WRT, VP880_REGULATOR_CTRL_LEN, data);
mvOsDelay(10);
/* Set the line state:
* Dev 1 ch 1: disconnect (switcher Y)
* Disconnect is needed so that the voltages don't track to VOC */
data[0] = VP880_SS_DISCONNECT | VP880_SS_ACTIVATE_MASK;
VpMpiCmd(gDev1Id, EC_1, VP880_SYS_STATE_WRT, VP880_SYS_STATE_LEN, data);
mvOsDelay(100);
/*** Bring up LBAT ***/
/* Do a read/modify/write of ICR2 to override the LBAT switcher (Z) to off
* so that we can set the line state to ringing before turning it on */
VpMpiCmd(gDev1Id, EC_2, VP880_ICR2_RD, VP880_ICR2_LEN, data);
data[2] |= VP880_ICR2_SWY_CTRL_EN;
data[3] &= ~VP880_ICR2_SWY_CTRL_EN;
VpMpiCmd(gDev1Id, EC_2, VP880_ICR2_WRT, VP880_ICR2_LEN, data);
/* Set the switcher control to low power. It won't actually turn on yet
* because of the ICR2 command above, but setting the register will allow
* the line state to be set to ringing. */
VpMpiCmd(gDev1Id, EC_BOTH, VP880_REGULATOR_CTRL_RD, VP880_REGULATOR_CTRL_LEN, data);
data[0] = 0;
if (vblTarget != 0)
data[0] |= VP880_SWZ_LP;
VpMpiCmd(gDev1Id, EC_BOTH, VP880_REGULATOR_CTRL_WRT, VP880_REGULATOR_CTRL_LEN, data);
mvOsDelay(10);
/* Set the line state:
* Dev 1 ch 2: ringing (switcher Z) */
data[0] = VP880_SS_BALANCED_RINGING;
VpMpiCmd(gDev1Id, EC_2, VP880_SYS_STATE_WRT, VP880_SYS_STATE_LEN, data);
mvOsDelay(10);
/* Turn the switcher on */
VpMpiCmd(gDev1Id, EC_2, VP880_ICR2_RD, VP880_ICR2_LEN, data);
data[2] |= VP880_ICR2_SWY_CTRL_EN;
data[3] |= VP880_ICR2_SWY_CTRL_EN;
VpMpiCmd(gDev1Id, EC_2, VP880_ICR2_WRT, VP880_ICR2_LEN, data);
mvOsDelay(100);
/*** Bring up PBAT ***/
/* Set PBAT switcher to low power. */
data[0] = 0;
if (vbpTarget != 0)
data[0] |= VP880_SWY_LP;
VpMpiCmd(gDev2Id, EC_BOTH, VP880_REGULATOR_CTRL_WRT, VP880_REGULATOR_CTRL_LEN, data);
mvOsDelay(10);
/* Set the line states:
* Dev 2 ch 1: disconnect (switcher Y)
* Disconnect is needed so that the voltages don't track to VOC */
data[0] = VP880_SS_DISCONNECT | VP880_SS_ACTIVATE_MASK;
VpMpiCmd(gDev2Id, EC_1, VP880_SYS_STATE_WRT, VP880_SYS_STATE_LEN, data);
mvOsDelay(100);
/* Set switchers to high power for non-zero batteries, one at a time */
VpMpiCmd(gDev1Id, EC_BOTH, VP880_REGULATOR_CTRL_RD, VP880_REGULATOR_CTRL_LEN, data);
if (vbhTarget != 0) {
data[0] &= ~VP880_SWY_MODE_MASK;
data[0] |= VP880_SWY_HP;
VpMpiCmd(gDev1Id, EC_BOTH, VP880_REGULATOR_CTRL_WRT, VP880_REGULATOR_CTRL_LEN, data);
}
mvOsDelay(20);
if (vblTarget != 0) {
data[0] &= ~VP880_SWZ_MODE_MASK;
data[0] |= VP880_SWZ_HP;
VpMpiCmd(gDev1Id, EC_BOTH, VP880_REGULATOR_CTRL_WRT, VP880_REGULATOR_CTRL_LEN, data);
}
mvOsDelay(20);
data[0] = 0;
if (vbpTarget != 0) {
data[0] |= VP880_SWY_HP;
VpMpiCmd(gDev2Id, EC_BOTH, VP880_REGULATOR_CTRL_WRT, VP880_REGULATOR_CTRL_LEN, data);
}
/* Set IOs to outputs to control the module LEDs */
data[0] = VP880_IODIR_IO1_OUTPUT | VP880_IODIR_IO2_OUTPUT;
VpMpiCmd(gDev1Id, EC_BOTH, VP880_IODIR_REG_WRT, VP880_IODIR_REG_LEN, data);
VpMpiCmd(gDev2Id, EC_BOTH, VP880_IODIR_REG_WRT, VP880_IODIR_REG_LEN, data);
/* Turn on the LEDs for non-zero batteries. */
data[0] = 0;
if (vbhTarget != 0) {
/* gDev1Id IO1 controls the VBH (v1) LED */
data[0] |= VP880_IODATA_IO1;
}
if (vblTarget != 0) {
/* gDev1Id IO2 controls the VBL (v2) LED */
data[0] |= VP880_IODATA_IO2;
}
VpMpiCmd(gDev1Id, EC_1, VP880_IODATA_REG_WRT, VP880_IODATA_REG_LEN, data);
data[0] = 0;
if (vbpTarget != 0) {
/* gDev2Id IO1 controls the VBP (v3) LED */
data[0] |= VP880_IODATA_IO1;
}
VpMpiCmd(gDev2Id, EC_1, VP880_IODATA_REG_WRT, VP880_IODATA_REG_LEN, data);
mvOsPrintf("Power supply initialized successfully\n");
return 0;
}
