tinygo-org/tinygo
1
0
Fork 0
mirror of https://github.com/tinygo-org/tinygo.git synced 2026-08-03 02:27:48 +00:00
Code Issues Packages Projects Releases 6 Wiki Activity

machine/rp2: unexport machine-specific errors

Browse Source 
Errors are part of API, and the exported rp2 errors seemed arbitrary.
For example, the very particular ErrRP2040I2CDisable was exported, but
errI2CWriteTimeout (which is defined on all platforms) is not.

While here, remove "RP2040" from an error name and make the messages
consistent and idiomatic.
This commit is contained in:
Elias Naur
2025-05-03 11:41:07 +02:00
committed by Ron Evans
parent d840971c42
commit 2da9d26e21
1 changed files with 19 additions and 19 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/machine/machine_rp2_i2c.go
+19 -19
View File
@@ -58,15 +58,15 @@ type I2C struct {
}
var (
ErrInvalidI2CBaudrate = errors.New("invalid i2c baudrate")
ErrInvalidTgtAddr = errors.New("invalid target i2c address not in 0..0x80 or is reserved")
ErrI2CGeneric = errors.New("i2c error")
ErrRP2040I2CDisable = errors.New("i2c rp2040 peripheral timeout in disable")
errInvalidI2CSDA = errors.New("invalid I2C SDA pin")
errInvalidI2CSCL = errors.New("invalid I2C SCL pin")
ErrI2CAlreadyListening = errors.New("i2c already listening")
ErrI2CWrongMode = errors.New("i2c wrong mode")
ErrI2CUnderflow = errors.New("i2c underflow")
errInvalidI2CBaudrate = errors.New("i2c: invalid baudrate")
errInvalidTgtAddr = errors.New("i2c: invalid target address: not in 0..0x80 or is reserved")
errI2CGeneric = errors.New("i2c: generic error")
errI2CDisable = errors.New("i2c: peripheral timeout in disable")
errInvalidI2CSDA = errors.New("i2c: invalid SDA pin")
errInvalidI2CSCL = errors.New("i2c: invalid SCL pin")
errI2CAlreadyListening = errors.New("i2c: already listening")
errI2CWrongMode = errors.New("i2c: wrong mode")
errI2CUnderflow = errors.New("i2c: underflow")
)
// Tx performs a write and then a read transfer placing the result in
@@ -84,7 +84,7 @@ var (
// Performs only a write transfer.
func (i2c *I2C) Tx(addr uint16, w, r []byte) error {
if i2c.mode != I2CModeController {
return ErrI2CWrongMode
return errI2CWrongMode
}
return i2c.tx(uint8(addr), w, r)
}
@@ -94,7 +94,7 @@ func (i2c *I2C) Tx(addr uint16, w, r []byte) error {
// addr is the address to listen to
func (i2c *I2C) Listen(addr uint16) error {
if i2c.mode != I2CModeTarget {
return ErrI2CWrongMode
return errI2CWrongMode
}
return i2c.listen(uint8(addr))
@@ -155,7 +155,7 @@ func (i2c *I2C) Configure(config I2CConfig) error {
func (i2c *I2C) SetBaudRate(br uint32) error {
if br == 0 {
return ErrInvalidI2CBaudrate
return errInvalidI2CBaudrate
}
// I2C is synchronous design that runs from clk_sys
@@ -167,7 +167,7 @@ func (i2c *I2C) SetBaudRate(br uint32) error {
hcnt := period - lcnt
// Check for out-of-range divisors:
if hcnt > rp.I2C0_IC_FS_SCL_HCNT_IC_FS_SCL_HCNT_Msk || hcnt < 8 || lcnt > rp.I2C0_IC_FS_SCL_LCNT_IC_FS_SCL_LCNT_Msk || lcnt < 8 {
return ErrInvalidI2CBaudrate
return errInvalidI2CBaudrate
}
// Per I2C-bus specification a device in standard or fast mode must
@@ -187,7 +187,7 @@ func (i2c *I2C) SetBaudRate(br uint32) error {
}
if sdaTxHoldCnt > lcnt-2 {
return ErrInvalidI2CBaudrate
return errInvalidI2CBaudrate
}
err := i2c.disable()
if err != nil {
@@ -220,7 +220,7 @@ func (i2c *I2C) disable() error {
i2c.Bus.IC_ENABLE.Set(0)
for i2c.Bus.IC_ENABLE_STATUS.Get()&1 != 0 {
if ticks() > deadline {
return ErrRP2040I2CDisable
return errI2CDisable
}
}
return nil
@@ -286,7 +286,7 @@ func (i2c *I2C) tx(addr uint8, tx, rx []byte) (err error) {
const timeout_us = 4_000
deadline := ticks() + timeout_us
if addr >= 0x80 || isReservedI2CAddr(addr) {
return ErrInvalidTgtAddr
return errInvalidTgtAddr
}
txlen := len(tx)
rxlen := len(rx)
@@ -420,7 +420,7 @@ func (i2c *I2C) tx(addr uint8, tx, rx []byte) (err error) {
case abortReason == 0 || abortReason&rp.I2C0_IC_TX_ABRT_SOURCE_ABRT_7B_ADDR_NOACK != 0:
// No reported errors - seems to happen if there is nothing connected to the bus.
// Address byte not acknowledged
err = ErrI2CGeneric
err = errI2CGeneric
case abortReason&rp.I2C0_IC_TX_ABRT_SOURCE_ABRT_TXDATA_NOACK != 0:
// Address acknowledged, some data not acknowledged
fallthrough
@@ -434,7 +434,7 @@ func (i2c *I2C) tx(addr uint8, tx, rx []byte) (err error) {
// listen sets up for async handling of requests on the I2C bus.
func (i2c *I2C) listen(addr uint8) error {
if addr >= 0x80 || isReservedI2CAddr(addr) {
return ErrInvalidTgtAddr
return errInvalidTgtAddr
}
err := i2c.disable()
@@ -497,7 +497,7 @@ func (i2c *I2C) Reply(buf []byte) error {
stat := i2c.Bus.IC_RAW_INTR_STAT.Get()
if stat&rp.I2C0_IC_INTR_MASK_M_RD_REQ == 0 {
return ErrI2CWrongMode
return errI2CWrongMode
}
i2c.Bus.IC_CLR_RD_REQ.Get() // clear restart