Allow seperate buffer with offset

2026-02-19 17:53:57 +13:00
parent c062110e35
commit 2869ec9300
2 changed files with 6 additions and 4 deletions
--- a/pico/lib/dma.py
+++ b/pico/lib/dma.py
@@ -93,8 +93,8 @@ class PIO_DMA_Transfer():
        self.dma_chan.CTRL_TRIG.INCR_WRITE = 0
        self.dma_chan.CTRL_TRIG.INCR_READ = 1
            
-    def start_transfer(self, buffer):
-        self.dma_chan.READ_ADDR_REG = uctypes.addressof(buffer)
+    def start_transfer(self, buffer, offset=0):
+        self.dma_chan.READ_ADDR_REG = uctypes.addressof(buffer) + offset
        self.dma_chan.CTRL_TRIG.EN = 1

    def transfer_count(self):