found the problem with not compiling... Typo

ked/csl/interfaces/spi.h

@@ -25,7 +25,7 @@ extern "C" {
 
 /** This is the spi hardware channel class*/
 
-void spi_initMaster(spiCH_t spi_hw_ch);
+void spi_init(spiCH_t spi_hw_ch);
 
 
 /*!

ked/csl/stm32f042/Src/spi.c

@@ -4,7 +4,7 @@
 
 // https://controllerstech.com/spi-using-registers-in-stm32/
 
-void spi_initMater(spiCH_t spi_hw_ch)
+void spi_init(spiCH_t spi_hw_ch)
 {
 	RCC->APB2ENR |= (1<<12);  // Enable SPI1 CLock
 	

main.c

@@ -76,8 +76,9 @@ int main(int argc, char *argv[])
 	
 	pinWrite(pinB3,0);
 
-	spi_initMaster(SPI_CH_1);
+	spi_init(SPI_CH_1);
 	for(i = 10; i > 0; i--) {
+		pinToggle(pinB3);
 		spi_trx(SPI_CH_1, 0xAE);
 	}