machine/samd21: use HasBits() method to simplify bit comparisons
Signed-off-by: Ron Evans <ron@hybridgroup.com>
Этот коммит содержится в:
Ron Evans
Ayke
родитель
be491abc46
коммит
2504754325
3 изменённых файлов: 63 добавлений и 63 удалений
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@ -201,7 +201,7 @@ func (a ADC) Get() uint16 {
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waitADCSync()
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// Waiting for conversion to complete
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for (sam.ADC.INTFLAG.Get() & sam.ADC_INTFLAG_RESRDY) == 0 {
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for !sam.ADC.INTFLAG.HasBits(sam.ADC_INTFLAG_RESRDY) {
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}
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val := sam.ADC.RESULT.Get()
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@ -242,7 +242,7 @@ func (a ADC) getADCChannel() uint8 {
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}
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func waitADCSync() {
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for (sam.ADC.STATUS.Get() & sam.ADC_STATUS_SYNCBUSY) > 0 {
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for sam.ADC.STATUS.HasBits(sam.ADC_STATUS_SYNCBUSY) {
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}
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}
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@ -325,8 +325,8 @@ func (uart UART) Configure(config UARTConfig) {
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// reset SERCOM0
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uart.Bus.CTRLA.SetBits(sam.SERCOM_USART_CTRLA_SWRST)
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for (uart.Bus.CTRLA.Get()&sam.SERCOM_USART_CTRLA_SWRST) > 0 ||
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(uart.Bus.SYNCBUSY.Get()&sam.SERCOM_USART_SYNCBUSY_SWRST) > 0 {
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for uart.Bus.CTRLA.HasBits(sam.SERCOM_USART_CTRLA_SWRST) ||
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uart.Bus.SYNCBUSY.HasBits(sam.SERCOM_USART_SYNCBUSY_SWRST) {
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}
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// set UART mode/sample rate
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@ -365,7 +365,7 @@ func (uart UART) Configure(config UARTConfig) {
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// Enable USART1 port.
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// sercom->USART.CTRLA.bit.ENABLE = 0x1u;
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uart.Bus.CTRLA.SetBits(sam.SERCOM_USART_CTRLA_ENABLE)
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for (uart.Bus.SYNCBUSY.Get() & sam.SERCOM_USART_SYNCBUSY_ENABLE) > 0 {
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for uart.Bus.SYNCBUSY.HasBits(sam.SERCOM_USART_SYNCBUSY_ENABLE) {
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}
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// setup interrupt on receive
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@ -398,7 +398,7 @@ func (uart UART) SetBaudRate(br uint32) {
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// WriteByte writes a byte of data to the UART.
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func (uart UART) WriteByte(c byte) error {
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// wait until ready to receive
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for (uart.Bus.INTFLAG.Get() & sam.SERCOM_USART_INTFLAG_DRE) == 0 {
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for !uart.Bus.INTFLAG.HasBits(sam.SERCOM_USART_INTFLAG_DRE) {
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}
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uart.Bus.DATA.Set(uint16(c))
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return nil
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@ -454,8 +454,8 @@ func (i2c I2C) Configure(config I2CConfig) {
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// reset SERCOM
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i2c.Bus.CTRLA.SetBits(sam.SERCOM_I2CM_CTRLA_SWRST)
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for (i2c.Bus.CTRLA.Get()&sam.SERCOM_I2CM_CTRLA_SWRST) > 0 ||
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(i2c.Bus.SYNCBUSY.Get()&sam.SERCOM_I2CM_SYNCBUSY_SWRST) > 0 {
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for i2c.Bus.CTRLA.HasBits(sam.SERCOM_I2CM_CTRLA_SWRST) ||
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i2c.Bus.SYNCBUSY.HasBits(sam.SERCOM_I2CM_SYNCBUSY_SWRST) {
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}
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// Set i2c master mode
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@ -467,12 +467,12 @@ func (i2c I2C) Configure(config I2CConfig) {
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// Enable I2CM port.
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// sercom->USART.CTRLA.bit.ENABLE = 0x1u;
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i2c.Bus.CTRLA.SetBits(sam.SERCOM_I2CM_CTRLA_ENABLE)
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for (i2c.Bus.SYNCBUSY.Get() & sam.SERCOM_I2CM_SYNCBUSY_ENABLE) > 0 {
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for i2c.Bus.SYNCBUSY.HasBits(sam.SERCOM_I2CM_SYNCBUSY_ENABLE) {
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}
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// set bus idle mode
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i2c.Bus.STATUS.SetBits(wireIdleState << sam.SERCOM_I2CM_STATUS_BUSSTATE_Pos)
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for (i2c.Bus.SYNCBUSY.Get() & sam.SERCOM_I2CM_SYNCBUSY_SYSOP) > 0 {
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for i2c.Bus.SYNCBUSY.HasBits(sam.SERCOM_I2CM_SYNCBUSY_SYSOP) {
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}
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// enable pins
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@ -499,7 +499,7 @@ func (i2c I2C) Tx(addr uint16, w, r []byte) error {
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// wait until transmission complete
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timeout := i2cTimeout
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for (i2c.Bus.INTFLAG.Get() & sam.SERCOM_I2CM_INTFLAG_MB) == 0 {
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for !i2c.Bus.INTFLAG.HasBits(sam.SERCOM_I2CM_INTFLAG_MB) {
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timeout--
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if timeout == 0 {
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return errors.New("I2C timeout on ready to write data")
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@ -507,7 +507,7 @@ func (i2c I2C) Tx(addr uint16, w, r []byte) error {
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}
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// ACK received (0: ACK, 1: NACK)
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if (i2c.Bus.STATUS.Get() & sam.SERCOM_I2CM_STATUS_RXNACK) > 0 {
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if i2c.Bus.STATUS.HasBits(sam.SERCOM_I2CM_STATUS_RXNACK) {
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return errors.New("I2C write error: expected ACK not NACK")
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}
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@ -529,17 +529,17 @@ func (i2c I2C) Tx(addr uint16, w, r []byte) error {
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i2c.sendAddress(addr, false)
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// wait transmission complete
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for (i2c.Bus.INTFLAG.Get() & sam.SERCOM_I2CM_INTFLAG_SB) == 0 {
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for !i2c.Bus.INTFLAG.HasBits(sam.SERCOM_I2CM_INTFLAG_SB) {
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// If the slave NACKS the address, the MB bit will be set.
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// In that case, send a stop condition and return error.
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if (i2c.Bus.INTFLAG.Get() & sam.SERCOM_I2CM_INTFLAG_MB) > 0 {
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if i2c.Bus.INTFLAG.HasBits(sam.SERCOM_I2CM_INTFLAG_MB) {
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i2c.Bus.CTRLB.SetBits(wireCmdStop << sam.SERCOM_I2CM_CTRLB_CMD_Pos) // Stop condition
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return errors.New("I2C read error: expected ACK not NACK")
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}
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}
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// ACK received (0: ACK, 1: NACK)
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if (i2c.Bus.STATUS.Get() & sam.SERCOM_I2CM_STATUS_RXNACK) > 0 {
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if i2c.Bus.STATUS.HasBits(sam.SERCOM_I2CM_STATUS_RXNACK) {
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return errors.New("I2C read error: expected ACK not NACK")
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}
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@ -574,9 +574,9 @@ func (i2c I2C) WriteByte(data byte) error {
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// wait until transmission successful
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timeout := i2cTimeout
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for (i2c.Bus.INTFLAG.Get() & sam.SERCOM_I2CM_INTFLAG_MB) == 0 {
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for !i2c.Bus.INTFLAG.HasBits(sam.SERCOM_I2CM_INTFLAG_MB) {
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// check for bus error
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if (sam.SERCOM3_I2CM.STATUS.Get() & sam.SERCOM_I2CM_STATUS_BUSERR) > 0 {
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if sam.SERCOM3_I2CM.STATUS.HasBits(sam.SERCOM_I2CM_STATUS_BUSERR) {
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return errors.New("I2C bus error")
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}
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timeout--
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@ -585,7 +585,7 @@ func (i2c I2C) WriteByte(data byte) error {
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}
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}
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if (i2c.Bus.STATUS.Get() & sam.SERCOM_I2CM_STATUS_RXNACK) > 0 {
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if i2c.Bus.STATUS.HasBits(sam.SERCOM_I2CM_STATUS_RXNACK) {
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return errors.New("I2C write error: expected ACK not NACK")
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}
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@ -601,8 +601,8 @@ func (i2c I2C) sendAddress(address uint16, write bool) error {
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// wait until bus ready
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timeout := i2cTimeout
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for (i2c.Bus.STATUS.Get()&(wireIdleState<<sam.SERCOM_I2CM_STATUS_BUSSTATE_Pos)) == 0 &&
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(i2c.Bus.STATUS.Get()&(wireOwnerState<<sam.SERCOM_I2CM_STATUS_BUSSTATE_Pos)) == 0 {
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for !i2c.Bus.STATUS.HasBits(wireIdleState<<sam.SERCOM_I2CM_STATUS_BUSSTATE_Pos) &&
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!i2c.Bus.STATUS.HasBits(wireOwnerState<<sam.SERCOM_I2CM_STATUS_BUSSTATE_Pos) {
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timeout--
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if timeout == 0 {
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return errors.New("I2C timeout on bus ready")
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@ -616,7 +616,7 @@ func (i2c I2C) sendAddress(address uint16, write bool) error {
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func (i2c I2C) signalStop() error {
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i2c.Bus.CTRLB.SetBits(wireCmdStop << sam.SERCOM_I2CM_CTRLB_CMD_Pos) // Stop command
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timeout := i2cTimeout
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for (i2c.Bus.SYNCBUSY.Get() & sam.SERCOM_I2CM_SYNCBUSY_SYSOP) > 0 {
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for i2c.Bus.SYNCBUSY.HasBits(sam.SERCOM_I2CM_SYNCBUSY_SYSOP) {
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timeout--
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if timeout == 0 {
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return errors.New("I2C timeout on signal stop")
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@ -628,7 +628,7 @@ func (i2c I2C) signalStop() error {
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func (i2c I2C) signalRead() error {
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i2c.Bus.CTRLB.SetBits(wireCmdRead << sam.SERCOM_I2CM_CTRLB_CMD_Pos) // Read command
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timeout := i2cTimeout
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for (i2c.Bus.SYNCBUSY.Get() & sam.SERCOM_I2CM_SYNCBUSY_SYSOP) > 0 {
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for i2c.Bus.SYNCBUSY.HasBits(sam.SERCOM_I2CM_SYNCBUSY_SYSOP) {
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timeout--
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if timeout == 0 {
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return errors.New("I2C timeout on signal read")
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@ -638,7 +638,7 @@ func (i2c I2C) signalRead() error {
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}
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func (i2c I2C) readByte() byte {
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for (i2c.Bus.INTFLAG.Get() & sam.SERCOM_I2CM_INTFLAG_SB) == 0 {
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for !i2c.Bus.INTFLAG.HasBits(sam.SERCOM_I2CM_INTFLAG_SB) {
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}
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return byte(i2c.Bus.DATA.Get())
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}
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@ -697,11 +697,11 @@ func (i2s I2S) Configure(config I2SConfig) {
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// reset the device
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i2s.Bus.CTRLA.SetBits(sam.I2S_CTRLA_SWRST)
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for (i2s.Bus.SYNCBUSY.Get() & sam.I2S_SYNCBUSY_SWRST) > 0 {
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for i2s.Bus.SYNCBUSY.HasBits(sam.I2S_SYNCBUSY_SWRST) {
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}
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// disable device before continuing
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for (i2s.Bus.SYNCBUSY.Get() & sam.I2S_SYNCBUSY_ENABLE) > 0 {
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for i2s.Bus.SYNCBUSY.HasBits(sam.I2S_SYNCBUSY_ENABLE) {
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}
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i2s.Bus.CTRLA.ClearBits(sam.I2S_CTRLA_ENABLE)
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@ -797,17 +797,17 @@ func (i2s I2S) Configure(config I2SConfig) {
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// re-enable
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i2s.Bus.CTRLA.SetBits(sam.I2S_CTRLA_ENABLE)
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for (i2s.Bus.SYNCBUSY.Get() & sam.I2S_SYNCBUSY_ENABLE) > 0 {
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for i2s.Bus.SYNCBUSY.HasBits(sam.I2S_SYNCBUSY_ENABLE) {
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}
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// enable i2s clock
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i2s.Bus.CTRLA.SetBits(sam.I2S_CTRLA_CKEN0)
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for (i2s.Bus.SYNCBUSY.Get() & sam.I2S_SYNCBUSY_CKEN0) > 0 {
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for i2s.Bus.SYNCBUSY.HasBits(sam.I2S_SYNCBUSY_CKEN0) {
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}
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// enable i2s serializer
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i2s.Bus.CTRLA.SetBits(sam.I2S_CTRLA_SEREN1)
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for (i2s.Bus.SYNCBUSY.Get() & sam.I2S_SYNCBUSY_SEREN1) > 0 {
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for i2s.Bus.SYNCBUSY.HasBits(sam.I2S_SYNCBUSY_SEREN1) {
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}
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}
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@ -817,10 +817,10 @@ func (i2s I2S) Read(p []uint32) (n int, err error) {
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i := 0
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for i = 0; i < len(p); i++ {
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// Wait until ready
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for (i2s.Bus.INTFLAG.Get() & sam.I2S_INTFLAG_RXRDY1) == 0 {
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for !i2s.Bus.INTFLAG.HasBits(sam.I2S_INTFLAG_RXRDY1) {
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}
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for (i2s.Bus.SYNCBUSY.Get() & sam.I2S_SYNCBUSY_DATA1) > 0 {
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for i2s.Bus.SYNCBUSY.HasBits(sam.I2S_SYNCBUSY_DATA1) {
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}
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// read data
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@ -839,10 +839,10 @@ func (i2s I2S) Write(p []uint32) (n int, err error) {
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i := 0
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for i = 0; i < len(p); i++ {
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// Wait until ready
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for (i2s.Bus.INTFLAG.Get() & sam.I2S_INTFLAG_TXRDY1) == 0 {
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for !i2s.Bus.INTFLAG.HasBits(sam.I2S_INTFLAG_TXRDY1) {
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}
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for (i2s.Bus.SYNCBUSY.Get() & sam.I2S_SYNCBUSY_DATA1) > 0 {
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for i2s.Bus.SYNCBUSY.HasBits(sam.I2S_SYNCBUSY_DATA1) {
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}
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// write data
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@ -858,7 +858,7 @@ func (i2s I2S) Write(p []uint32) (n int, err error) {
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// Close the I2S bus.
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func (i2s I2S) Close() error {
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// Sync wait
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for (i2s.Bus.SYNCBUSY.Get() & sam.I2S_SYNCBUSY_ENABLE) > 0 {
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for i2s.Bus.SYNCBUSY.HasBits(sam.I2S_SYNCBUSY_ENABLE) {
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}
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// disable I2S
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@ -868,7 +868,7 @@ func (i2s I2S) Close() error {
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}
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func waitForSync() {
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for (sam.GCLK.STATUS.Get() & sam.GCLK_STATUS_SYNCBUSY) > 0 {
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for sam.GCLK.STATUS.HasBits(sam.GCLK_STATUS_SYNCBUSY) {
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}
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}
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@ -903,7 +903,7 @@ func (spi SPI) Configure(config SPIConfig) {
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// Disable SPI port.
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spi.Bus.CTRLA.ClearBits(sam.SERCOM_SPI_CTRLA_ENABLE)
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for (spi.Bus.SYNCBUSY.Get() & sam.SERCOM_SPI_SYNCBUSY_ENABLE) > 0 {
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for spi.Bus.SYNCBUSY.HasBits(sam.SERCOM_SPI_SYNCBUSY_ENABLE) {
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}
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// enable pins
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@ -913,8 +913,8 @@ func (spi SPI) Configure(config SPIConfig) {
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// reset SERCOM
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spi.Bus.CTRLA.SetBits(sam.SERCOM_SPI_CTRLA_SWRST)
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for (spi.Bus.CTRLA.Get()&sam.SERCOM_SPI_CTRLA_SWRST) > 0 ||
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(spi.Bus.SYNCBUSY.Get()&sam.SERCOM_SPI_SYNCBUSY_SWRST) > 0 {
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for spi.Bus.CTRLA.HasBits(sam.SERCOM_SPI_CTRLA_SWRST) ||
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spi.Bus.SYNCBUSY.HasBits(sam.SERCOM_SPI_SYNCBUSY_SWRST) {
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}
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// set bit transfer order
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@ -932,7 +932,7 @@ func (spi SPI) Configure(config SPIConfig) {
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spi.Bus.CTRLB.SetBits((0 << sam.SERCOM_SPI_CTRLB_CHSIZE_Pos) | // 8bit char size
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sam.SERCOM_SPI_CTRLB_RXEN) // receive enable
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for (spi.Bus.SYNCBUSY.Get() & sam.SERCOM_SPI_SYNCBUSY_CTRLB) > 0 {
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for spi.Bus.SYNCBUSY.HasBits(sam.SERCOM_SPI_SYNCBUSY_CTRLB) {
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}
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// set mode
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@ -959,7 +959,7 @@ func (spi SPI) Configure(config SPIConfig) {
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// Enable SPI port.
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spi.Bus.CTRLA.SetBits(sam.SERCOM_SPI_CTRLA_ENABLE)
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for (spi.Bus.SYNCBUSY.Get() & sam.SERCOM_SPI_SYNCBUSY_ENABLE) > 0 {
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for spi.Bus.SYNCBUSY.HasBits(sam.SERCOM_SPI_SYNCBUSY_ENABLE) {
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}
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}
|
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|
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@ -969,7 +969,7 @@ func (spi SPI) Transfer(w byte) (byte, error) {
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spi.Bus.DATA.Set(uint32(w))
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// wait for receive
|
||||
for (spi.Bus.INTFLAG.Get() & sam.SERCOM_SPI_INTFLAG_RXC) == 0 {
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for !spi.Bus.INTFLAG.HasBits(sam.SERCOM_SPI_INTFLAG_RXC) {
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}
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|
||||
// return data
|
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@ -988,14 +988,14 @@ func InitPWM() {
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sam.GCLK.CLKCTRL.Set((sam.GCLK_CLKCTRL_ID_TCC0_TCC1 << sam.GCLK_CLKCTRL_ID_Pos) |
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(sam.GCLK_CLKCTRL_GEN_GCLK0 << sam.GCLK_CLKCTRL_GEN_Pos) |
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sam.GCLK_CLKCTRL_CLKEN)
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for (sam.GCLK.STATUS.Get() & sam.GCLK_STATUS_SYNCBUSY) > 0 {
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for sam.GCLK.STATUS.HasBits(sam.GCLK_STATUS_SYNCBUSY) {
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}
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|
||||
// Use GCLK0 for TCC2/TC3
|
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sam.GCLK.CLKCTRL.Set((sam.GCLK_CLKCTRL_ID_TCC2_TC3 << sam.GCLK_CLKCTRL_ID_Pos) |
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(sam.GCLK_CLKCTRL_GEN_GCLK0 << sam.GCLK_CLKCTRL_GEN_Pos) |
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sam.GCLK_CLKCTRL_CLKEN)
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for (sam.GCLK.STATUS.Get() & sam.GCLK_STATUS_SYNCBUSY) > 0 {
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for sam.GCLK.STATUS.HasBits(sam.GCLK_STATUS_SYNCBUSY) {
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}
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}
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@ -1007,20 +1007,20 @@ func (pwm PWM) Configure() {
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// disable timer
|
||||
timer.CTRLA.ClearBits(sam.TCC_CTRLA_ENABLE)
|
||||
// Wait for synchronization
|
||||
for (timer.SYNCBUSY.Get() & sam.TCC_SYNCBUSY_ENABLE) > 0 {
|
||||
for timer.SYNCBUSY.HasBits(sam.TCC_SYNCBUSY_ENABLE) {
|
||||
}
|
||||
|
||||
// Use "Normal PWM" (single-slope PWM)
|
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timer.WAVE.SetBits(sam.TCC_WAVE_WAVEGEN_NPWM)
|
||||
// Wait for synchronization
|
||||
for (timer.SYNCBUSY.Get() & sam.TCC_SYNCBUSY_WAVE) > 0 {
|
||||
for timer.SYNCBUSY.HasBits(sam.TCC_SYNCBUSY_WAVE) {
|
||||
}
|
||||
|
||||
// Set the period (the number to count to (TOP) before resetting timer)
|
||||
//TCC0->PER.reg = period;
|
||||
timer.PER.Set(period)
|
||||
// Wait for synchronization
|
||||
for (timer.SYNCBUSY.Get() & sam.TCC_SYNCBUSY_PER) > 0 {
|
||||
for timer.SYNCBUSY.HasBits(sam.TCC_SYNCBUSY_PER) {
|
||||
}
|
||||
|
||||
// Set pin as output
|
||||
|
|
@ -1060,23 +1060,23 @@ func (pwm PWM) Set(value uint16) {
|
|||
timer.CTRLA.ClearBits(sam.TCC_CTRLA_ENABLE)
|
||||
|
||||
// Wait for synchronization
|
||||
for (timer.SYNCBUSY.Get() & sam.TCC_SYNCBUSY_ENABLE) > 0 {
|
||||
for timer.SYNCBUSY.HasBits(sam.TCC_SYNCBUSY_ENABLE) {
|
||||
}
|
||||
|
||||
// Set PWM signal to output duty cycle
|
||||
pwm.setChannel(uint32(value))
|
||||
|
||||
// Wait for synchronization on all channels
|
||||
for (timer.SYNCBUSY.Get() & (sam.TCC_SYNCBUSY_CC0 |
|
||||
for timer.SYNCBUSY.HasBits(sam.TCC_SYNCBUSY_CC0 |
|
||||
sam.TCC_SYNCBUSY_CC1 |
|
||||
sam.TCC_SYNCBUSY_CC2 |
|
||||
sam.TCC_SYNCBUSY_CC3)) > 0 {
|
||||
sam.TCC_SYNCBUSY_CC3) {
|
||||
}
|
||||
|
||||
// enable
|
||||
timer.CTRLA.SetBits(sam.TCC_CTRLA_ENABLE)
|
||||
// Wait for synchronization
|
||||
for (timer.SYNCBUSY.Get() & sam.TCC_SYNCBUSY_ENABLE) > 0 {
|
||||
for timer.SYNCBUSY.HasBits(sam.TCC_SYNCBUSY_ENABLE) {
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -1233,8 +1233,8 @@ var (
|
|||
func (usbcdc USBCDC) Configure(config UARTConfig) {
|
||||
// reset USB interface
|
||||
sam.USB_DEVICE.CTRLA.SetBits(sam.USB_DEVICE_CTRLA_SWRST)
|
||||
for (sam.USB_DEVICE.SYNCBUSY.Get()&sam.USB_DEVICE_SYNCBUSY_SWRST) > 0 ||
|
||||
(sam.USB_DEVICE.SYNCBUSY.Get()&sam.USB_DEVICE_SYNCBUSY_ENABLE) > 0 {
|
||||
for sam.USB_DEVICE.SYNCBUSY.HasBits(sam.USB_DEVICE_SYNCBUSY_SWRST) ||
|
||||
sam.USB_DEVICE.SYNCBUSY.HasBits(sam.USB_DEVICE_SYNCBUSY_ENABLE) {
|
||||
}
|
||||
|
||||
sam.USB_DEVICE.DESCADD.Set(uint32(uintptr(unsafe.Pointer(&usbEndpointDescriptors))))
|
||||
|
|
|
|||
|
|
@ -439,7 +439,7 @@ func (i2c I2C) Tx(addr uint16, w, r []byte) error {
|
|||
|
||||
// clear timeout here
|
||||
timeout := i2cTimeout
|
||||
for !i2c.Bus.SR2.HasBits(stm32.I2C_SR2_MSL|stm32.I2C_SR2_BUSY) {
|
||||
for !i2c.Bus.SR2.HasBits(stm32.I2C_SR2_MSL | stm32.I2C_SR2_BUSY) {
|
||||
timeout--
|
||||
if timeout == 0 {
|
||||
return errors.New("I2C timeout on read clear address")
|
||||
|
|
@ -478,7 +478,7 @@ func (i2c I2C) Tx(addr uint16, w, r []byte) error {
|
|||
|
||||
// clear address here
|
||||
timeout := i2cTimeout
|
||||
for !i2c.Bus.SR2.HasBits(stm32.I2C_SR2_MSL|stm32.I2C_SR2_BUSY) {
|
||||
for !i2c.Bus.SR2.HasBits(stm32.I2C_SR2_MSL | stm32.I2C_SR2_BUSY) {
|
||||
timeout--
|
||||
if timeout == 0 {
|
||||
return errors.New("I2C timeout on read clear address")
|
||||
|
|
@ -524,7 +524,7 @@ func (i2c I2C) Tx(addr uint16, w, r []byte) error {
|
|||
|
||||
// clear address here
|
||||
timeout := i2cTimeout
|
||||
for !i2c.Bus.SR2.HasBits(stm32.I2C_SR2_MSL|stm32.I2C_SR2_BUSY) {
|
||||
for !i2c.Bus.SR2.HasBits(stm32.I2C_SR2_MSL | stm32.I2C_SR2_BUSY) {
|
||||
timeout--
|
||||
if timeout == 0 {
|
||||
return errors.New("I2C timeout on read clear address")
|
||||
|
|
@ -579,7 +579,7 @@ func (i2c I2C) Tx(addr uint16, w, r []byte) error {
|
|||
|
||||
// clear address here
|
||||
timeout := i2cTimeout
|
||||
for !i2c.Bus.SR2.HasBits(stm32.I2C_SR2_MSL|stm32.I2C_SR2_BUSY) {
|
||||
for !i2c.Bus.SR2.HasBits(stm32.I2C_SR2_MSL | stm32.I2C_SR2_BUSY) {
|
||||
timeout--
|
||||
if timeout == 0 {
|
||||
return errors.New("I2C timeout on read clear address")
|
||||
|
|
@ -721,7 +721,7 @@ func (i2c I2C) sendAddress(address uint8, write bool) error {
|
|||
}
|
||||
|
||||
timeout = i2cTimeout
|
||||
for !i2c.Bus.SR2.HasBits(stm32.I2C_SR2_MSL|stm32.I2C_SR2_BUSY|stm32.I2C_SR2_TRA) {
|
||||
for !i2c.Bus.SR2.HasBits(stm32.I2C_SR2_MSL | stm32.I2C_SR2_BUSY | stm32.I2C_SR2_TRA) {
|
||||
timeout--
|
||||
if timeout == 0 {
|
||||
return errors.New("I2C timeout on send write address")
|
||||
|
|
|
|||
|
|
@ -67,13 +67,13 @@ func initClocks() {
|
|||
sam.SYSCTRL_OSC32K_EN1K |
|
||||
sam.SYSCTRL_OSC32K_ENABLE)
|
||||
// Wait for oscillator stabilization
|
||||
for (sam.SYSCTRL.PCLKSR.Get() & sam.SYSCTRL_PCLKSR_OSC32KRDY) == 0 {
|
||||
for !sam.SYSCTRL.PCLKSR.HasBits(sam.SYSCTRL_PCLKSR_OSC32KRDY) {
|
||||
}
|
||||
|
||||
// Software reset the module to ensure it is re-initialized correctly
|
||||
sam.GCLK.CTRL.Set(sam.GCLK_CTRL_SWRST)
|
||||
// Wait for reset to complete
|
||||
for (sam.GCLK.CTRL.Get()&sam.GCLK_CTRL_SWRST) > 0 && (sam.GCLK.STATUS.Get()&sam.GCLK_STATUS_SYNCBUSY) > 0 {
|
||||
for sam.GCLK.CTRL.HasBits(sam.GCLK_CTRL_SWRST) && sam.GCLK.STATUS.HasBits(sam.GCLK_STATUS_SYNCBUSY) {
|
||||
}
|
||||
|
||||
// Put OSC32K as source of Generic Clock Generator 1
|
||||
|
|
@ -96,7 +96,7 @@ func initClocks() {
|
|||
// Remove the OnDemand mode, Bug http://avr32.icgroup.norway.atmel.com/bugzilla/show_bug.cgi?id=9905
|
||||
sam.SYSCTRL.DFLLCTRL.Set(sam.SYSCTRL_DFLLCTRL_ENABLE)
|
||||
// Wait for ready
|
||||
for (sam.SYSCTRL.PCLKSR.Get() & sam.SYSCTRL_PCLKSR_DFLLRDY) == 0 {
|
||||
for !sam.SYSCTRL.PCLKSR.HasBits(sam.SYSCTRL_PCLKSR_DFLLRDY) {
|
||||
}
|
||||
|
||||
// Handle DFLL calibration based on info learned from Arduino SAMD implementation,
|
||||
|
|
@ -130,13 +130,13 @@ func initClocks() {
|
|||
sam.SYSCTRL_DFLLCTRL_USBCRM |
|
||||
sam.SYSCTRL_DFLLCTRL_BPLCKC)
|
||||
// Wait for ready
|
||||
for (sam.SYSCTRL.PCLKSR.Get() & sam.SYSCTRL_PCLKSR_DFLLRDY) == 0 {
|
||||
for !sam.SYSCTRL.PCLKSR.HasBits(sam.SYSCTRL_PCLKSR_DFLLRDY) {
|
||||
}
|
||||
|
||||
// Re-enable the DFLL
|
||||
sam.SYSCTRL.DFLLCTRL.SetBits(sam.SYSCTRL_DFLLCTRL_ENABLE)
|
||||
// Wait for ready
|
||||
for (sam.SYSCTRL.PCLKSR.Get() & sam.SYSCTRL_PCLKSR_DFLLRDY) == 0 {
|
||||
for !sam.SYSCTRL.PCLKSR.HasBits(sam.SYSCTRL_PCLKSR_DFLLRDY) {
|
||||
}
|
||||
|
||||
// Switch Generic Clock Generator 0 to DFLL48M. CPU will run at 48MHz.
|
||||
|
|
@ -154,7 +154,7 @@ func initClocks() {
|
|||
sam.SYSCTRL.OSC8M.SetBits(sam.SYSCTRL_OSC8M_PRESC_0 << sam.SYSCTRL_OSC8M_PRESC_Pos)
|
||||
sam.SYSCTRL.OSC8M.ClearBits(1 << sam.SYSCTRL_OSC8M_ONDEMAND_Pos)
|
||||
// Wait for oscillator stabilization
|
||||
for (sam.SYSCTRL.PCLKSR.Get() & sam.SYSCTRL_PCLKSR_OSC8MRDY) == 0 {
|
||||
for !sam.SYSCTRL.PCLKSR.HasBits(sam.SYSCTRL_PCLKSR_OSC8MRDY) {
|
||||
}
|
||||
|
||||
// Use OSC8M as source for Generic Clock Generator 3
|
||||
|
|
@ -218,7 +218,7 @@ func initRTC() {
|
|||
}
|
||||
|
||||
func waitForSync() {
|
||||
for (sam.GCLK.STATUS.Get() & sam.GCLK_STATUS_SYNCBUSY) > 0 {
|
||||
for sam.GCLK.STATUS.HasBits(sam.GCLK_STATUS_SYNCBUSY) {
|
||||
}
|
||||
}
|
||||
|
||||
|
|
|
|||
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