154c7c691b
This commit changes the number of wait states for the stm32f103 chip to 2 instead of 4. This gets it back in line with the datasheet, but it also has the side effect of breaking I2C. Therefore, another (seemingly unrelated) change is needed: the i2cTimeout constant must be increased to a higher value to adjust to the lower flash wait states - presumably because the lower number of wait states allows the chip to run code faster.
68 строки
1,2 КиБ
Go
68 строки
1,2 КиБ
Go
// +build stm32f4disco
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package machine
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import (
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"device/stm32"
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"runtime/interrupt"
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)
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const (
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LED = LED_BUILTIN
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LED1 = LED_GREEN
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LED2 = LED_ORANGE
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LED3 = LED_RED
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LED4 = LED_BLUE
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LED_BUILTIN = LED_GREEN
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LED_GREEN = PD12
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LED_ORANGE = PD13
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LED_RED = PD14
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LED_BLUE = PD15
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)
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// UART pins
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const (
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UART_TX_PIN = PA2
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UART_RX_PIN = PA3
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)
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var (
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UART0 = UART{
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Buffer: NewRingBuffer(),
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Bus: stm32.USART2,
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AltFuncSelector: AF7_USART1_2_3,
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}
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UART1 = &UART0
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)
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// set up RX IRQ handler. Follow similar pattern for other UARTx instances
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func init() {
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UART0.Interrupt = interrupt.New(stm32.IRQ_USART2, UART0.handleInterrupt)
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}
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// SPI pins
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const (
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SPI1_SCK_PIN = PA5
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SPI1_SDI_PIN = PA6
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SPI1_SDO_PIN = PA7
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SPI0_SCK_PIN = SPI1_SCK_PIN
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SPI0_SDI_PIN = SPI1_SDI_PIN
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SPI0_SDO_PIN = SPI1_SDO_PIN
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)
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// MEMs accelerometer
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const (
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MEMS_ACCEL_CS = PE3
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MEMS_ACCEL_INT1 = PE0
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MEMS_ACCEL_INT2 = PE1
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)
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// Since the first interface is named SPI1, both SPI0 and SPI1 refer to SPI1.
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// TODO: implement SPI2 and SPI3.
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var (
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SPI0 = SPI{
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Bus: stm32.SPI1,
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AltFuncSelector: AF5_SPI1_SPI2,
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}
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SPI1 = &SPI0
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)
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