use dma DREQ values defined in dreqs/dma.h

Author: kilograham

src/rp2_common/hardware_dma/include/hardware/dma.h

@@ -35,11 +35,11 @@ extern "C" {
  */
 
 // these are not defined in generated dreq.h
-#define DREQ_DMA_TIMER0 0x3b
-#define DREQ_DMA_TIMER1 0x3c
-#define DREQ_DMA_TIMER2 0x3d
-#define DREQ_DMA_TIMER3 0x3e
-#define DREQ_FORCE      0x3f
+#define DREQ_DMA_TIMER0 DMA_CH0_CTRL_TRIG_TREQ_SEL_VALUE_TIMER0
+#define DREQ_DMA_TIMER1 DMA_CH0_CTRL_TRIG_TREQ_SEL_VALUE_TIMER1
+#define DREQ_DMA_TIMER2 DMA_CH0_CTRL_TRIG_TREQ_SEL_VALUE_TIMER2
+#define DREQ_DMA_TIMER3 DMA_CH0_CTRL_TRIG_TREQ_SEL_VALUE_TIMER3
+#define DREQ_FORCE      DMA_CH0_CTRL_TRIG_TREQ_SEL_VALUE_PERMANENT
 
 // PICO_CONFIG: PARAM_ASSERTIONS_ENABLED_DMA, Enable/disable DMA assertions, type=bool, default=0, group=hardware_dma
 #ifndef PARAM_ASSERTIONS_ENABLED_DMA