rp2/rp2_dma: Fix fetching 'write' buffers for writing not reading.

nickovs · dpgeorge · commit f8cabe82f71a · 2024-01-07T18:25:52.000+11:00
Signed-off-by: Nicko van Someren &lt;nicko@nicko.org&gt;
diff --git a/ports/rp2/rp2_dma.c b/ports/rp2/rp2_dma.c
@@ -86,7 +86,7 @@ STATIC const uint32_t rp2_dma_ctrl_field_count = MP_ARRAY_SIZE(rp2_dma_ctrl_fiel
 STATIC uint32_t rp2_dma_register_value_from_obj(mp_obj_t o, int reg_type) {
     if (reg_type == REG_TYPE_ADDR_READ || reg_type == REG_TYPE_ADDR_WRITE) {
         mp_buffer_info_t buf_info;
-        mp_uint_t flags = MP_BUFFER_READ;
+        mp_uint_t flags = (reg_type == REG_TYPE_ADDR_READ) ? MP_BUFFER_READ : MP_BUFFER_WRITE;
         if (mp_get_buffer(o, &buf_info, flags)) {
             return (uint32_t)buf_info.buf;
         }

Original file line number	Diff line number	Diff line change
`@@ -86,7 +86,7 @@ STATIC const uint32_t rp2_dma_ctrl_field_count = MP_ARRAY_SIZE(rp2_dma_ctrl_fiel`
`86`	`86`	`STATIC uint32_t rp2_dma_register_value_from_obj(mp_obj_t o, int reg_type) {`
`87`	`87`	`if (reg_type == REG_TYPE_ADDR_READ \|\| reg_type == REG_TYPE_ADDR_WRITE) {`
`88`	`88`	`mp_buffer_info_t buf_info;`
`89`		`- mp_uint_t flags = MP_BUFFER_READ;`
	`89`	`+ mp_uint_t flags = (reg_type == REG_TYPE_ADDR_READ) ? MP_BUFFER_READ : MP_BUFFER_WRITE;`
`90`	`90`	`if (mp_get_buffer(o, &buf_info, flags)) {`
`91`	`91`	`return (uint32_t)buf_info.buf;`
`92`	`92`	`}`