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rp2040: use 4MHz as default frequency for SPI

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This matches other SPI implementations. I think the original value of
115200 was from a confusion with UART.
This commit is contained in:
Ayke van Laethem
2023-04-01 23:46:14 +02:00
committed by Ron Evans
parent 9e7882b1b7
commit 7d83e76833
1 changed files with 2 additions and 2 deletions
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src/machine/machine_rp2040_spi.go
+2 -2
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@@ -136,7 +136,7 @@ func (spi SPI) GetBaudRate() uint32 {
}
// Configure is intended to setup/initialize the SPI interface.
// Default baudrate of 115200 is used if Frequency == 0. Default
// Default baudrate of 4MHz is used if Frequency == 0. Default
// word length (data bits) is 8.
// Below is a list of GPIO pins corresponding to SPI0 bus on the rp2040:
//
@@ -152,7 +152,7 @@ func (spi SPI) GetBaudRate() uint32 {
//
// No pin configuration is needed of SCK, SDO and SDI needed after calling Configure.
func (spi SPI) Configure(config SPIConfig) error {
const defaultBaud uint32 = 115200
const defaultBaud uint32 = 4 * MHz
if config.SCK == 0 && config.SDO == 0 && config.SDI == 0 {
// set default pins if config zero valued or invalid clock pin supplied.
switch spi.Bus {