X-Git-Url: http://mj.ucw.cz/gitweb/?a=blobdiff_plain;ds=sidebyside;f=nucleo-test%2FSrc%2Ftest.c;h=717771dbdee783a314a8686df1901fc1e5b763f5;hb=298caf27bd9ccbd3669c8d6fbd3eca133481525d;hp=4216c10f0caa4af0bd7835ebb0d3738a1de28a3e;hpb=985bd34a1d699d8870cd4be9e170bcb80dadcf3a;p=home-hw.git

diff --git a/nucleo-test/Src/test.c b/nucleo-test/Src/test.c
index 4216c10..717771d 100644
--- a/nucleo-test/Src/test.c
+++ b/nucleo-test/Src/test.c
@@ -253,7 +253,7 @@ void run_test(void)
     }
 }
 
-#else
+#elif 0
 
 static const byte Gentium23x32[] = {
         0x17, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xF8, 0x1F, 0x00, 0x80, 0xFF, 0xFF, 0x00, 0xE0, 0xFF, 0xFF, 0x03, 0xF0, 0xFF, 0xFF, 0x0F, 0xF8, 0xFF, 0xFF, 0x1F, 0xFC, 0xFF, 0xFF, 0x3F, 0xFE, 0x01, 0xE0, 0x3F, 0x3E, 0x00, 0x00, 0x7F, 0x1F, 0x00, 0x00, 0x7C, 0x0F, 0x00, 0x00, 0x78, 0x0F, 0x00, 0x00, 0x78, 0x1F, 0x00, 0x00, 0x78, 0x3F, 0x00, 0x00, 0x78, 0x7F, 0x00, 0x00, 0x3E, 0xFE, 0x07, 0xC0, 0x3F, 0xFE, 0xFF, 0xFF, 0x1F, 0xFC, 0xFF, 0xFF, 0x0F, 0xF8, 0xFF, 0xFF, 0x07, 0xE0, 0xFF, 0xFF, 0x03, 0x80, 0xFF, 0xFF, 0x00, 0x00, 0xFC, 0x0F, 0x00,  // Code for char 0
@@ -419,4 +419,100 @@ void run_test(void)
     }
 }
 
+#else
+
+static volatile uint32_t dma_buffer;
+
+static void ds18b20_reset(void)
+{
+  debug_puts("DS18B20: Reset\r\n");
+  LL_TIM_DisableCounter(TIM3);
+  LL_TIM_SetOnePulseMode(TIM3, LL_TIM_ONEPULSEMODE_SINGLE);
+  LL_TIM_CC_SetDMAReqTrigger(TIM3, LL_TIM_CCDMAREQUEST_CC);
+
+  dma_buffer = 0xdeadbeef;
+  LL_DMA_SetMemoryAddress(DMA1, LL_DMA_CHANNEL_4, (uint32_t) &dma_buffer);
+  LL_DMA_SetPeriphAddress(DMA1, LL_DMA_CHANNEL_4, (uint32_t) &THERMO_GPIO_Port->IDR);
+  LL_DMA_SetDataLength(DMA1, LL_DMA_CHANNEL_4, 1);
+  LL_DMA_EnableChannel(DMA1, LL_DMA_CHANNEL_4);
+
+  LL_TIM_OC_InitTypeDef oc;
+
+  LL_TIM_OC_StructInit(&oc);
+  oc.OCMode = LL_TIM_OCMODE_FROZEN;
+  oc.CompareValue = 560;
+  LL_TIM_OC_Init(TIM3, LL_TIM_CHANNEL_CH1, &oc);
+  LL_TIM_EnableDMAReq_CC1(TIM3);
+
+  LL_TIM_OC_StructInit(&oc);
+  oc.OCMode = LL_TIM_OCMODE_FORCED_ACTIVE;
+  oc.OCState = LL_TIM_OCSTATE_ENABLE;
+  oc.CompareValue = 480;
+  oc.OCPolarity = LL_TIM_OCPOLARITY_LOW;
+  LL_TIM_OC_Init(TIM3, LL_TIM_CHANNEL_CH2, &oc);
+
+  LL_TIM_SetAutoReload(TIM3, 999);
+  LL_TIM_OC_SetMode(TIM3, LL_TIM_CHANNEL_CH2, LL_TIM_OCMODE_INACTIVE);
+
+  LL_TIM_EnableCounter(TIM3);
+
+  while (LL_TIM_IsEnabledCounter(TIM3))
+    ;
+  // Counter is automatically disabled at the end of cycle
+
+  LL_TIM_DisableDMAReq_CC1(TIM3);
+  LL_DMA_DisableChannel(DMA1, LL_DMA_CHANNEL_4);
+
+  debug_printf("DMA = %08x [%u] (%u remains)\r\n", dma_buffer, !!(dma_buffer & THERMO_Pin), LL_DMA_GetDataLength(DMA1, LL_DMA_CHANNEL_4));
+}
+
+static void ds18b20_send_byte(byte b)
+{
+  LL_TIM_SetAutoReload(TIM3, 99);
+  for (uint m=0x80; m; m >>= 1)
+    {
+      LL_TIM_OC_SetCompareCH2(TIM3, ((b & m) ? 1 : 89));
+      LL_TIM_OC_SetMode(TIM3, LL_TIM_CHANNEL_CH2, LL_TIM_OCMODE_FORCED_ACTIVE);
+      LL_TIM_OC_SetMode(TIM3, LL_TIM_CHANNEL_CH2, LL_TIM_OCMODE_INACTIVE);
+      LL_TIM_EnableCounter(TIM3);
+      while (LL_TIM_IsEnabledCounter(TIM3))
+	;
+    }
+}
+
+void run_test(void)
+{
+  uint cnt = 0;
+
+  debug_puts("Init\r\n");
+  NVIC_DisableIRQ(TIM3_IRQn);
+
+#if 0
+  LL_GPIO_InitTypeDef GPIO_InitStruct;
+  GPIO_InitStruct.Pin = THERMO_Pin;
+  GPIO_InitStruct.Mode = LL_GPIO_MODE_OUTPUT;
+  GPIO_InitStruct.Speed = LL_GPIO_SPEED_FREQ_HIGH;
+  GPIO_InitStruct.OutputType = LL_GPIO_OUTPUT_PUSHPULL;
+  GPIO_InitStruct.Pull = LL_GPIO_PULL_NO;
+  LL_GPIO_Init(THERMO_GPIO_Port, &GPIO_InitStruct);
+  LL_GPIO_SetOutputPin(THERMO_GPIO_Port, THERMO_Pin);
+#endif
+
+  ds18b20_reset();
+
+  for (;;)
+    {
+      LL_GPIO_TogglePin(LD2_GPIO_Port, LD2_Pin);
+
+      debug_printf("Tick tock: %d\r\n", cnt);
+      // ds18b20_send_byte(0xcc);
+      ds18b20_reset();
+
+      LL_GPIO_TogglePin(LD2_GPIO_Port, LD2_Pin);
+
+      LL_mDelay(100);
+      cnt++;
+    }
+}
+
 #endif