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Fix corrupted ASCII arrows, tolerances, and box formatting in Week 9 notes and rebuild PDF

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Kevin Thomas committed 2026-10-17 12:24:39 -04:00
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commit ccc5ac950e
2 files changed
+14 -14
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WEEK09/WEEK09.md
+14 -14
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@@ -205,7 +205,7 @@ int result = x << 1; // Shift left by 1: 0b00001100 = 12
| x << 1 means "shift all bits LEFT by 1 position" |
| |
| Before: 0 0 0 0 0 1 1 0 (6) |
| ? ? ? ? ? ? ? ? |
| < < < < < < < < |
| After: 0 0 0 0 1 1 0 0 (12) |
| |
| Each left shift DOUBLES the value! |
@@ -288,8 +288,8 @@ The **DHT11** is a low-cost digital temperature and humidity sensor. It uses a s
| Parameter | Range | Accuracy |
| --------------- | ------------ | -------- |
| **Humidity** | 20% - 90% RH | ?5% RH |
| **Temperature** | 0 deg C - 50 deg C | ?2 deg C |
| **Humidity** | 20% - 90% RH | +/- 5% RH |
| **Temperature** | 0 deg C - 50 deg C | +/- 2 deg C |
### How DHT11 Communication Works
@@ -312,7 +312,7 @@ float hum, temp;
// Pass ADDRESSES to the function so it can modify our variables
if (dht11_read(&hum, &temp)) {
printf("Humidity: %.1f%%, Temperature: %.1f?C\n", hum, temp);
printf("Humidity: %.1f%%, Temperature: %.1f C\n", hum, temp);
}
```
@@ -322,10 +322,10 @@ if (dht11_read(&hum, &temp)) {
| |
| Stack Memory |
| +----------------------------+ |
| | Address 0x20000008: hum |?--- &hum (passed to function) |
| | Address 0x20000008: hum |<--- &hum (passed to function) |
| | Value: 51.0 | |
| +----------------------------+ |
| | Address 0x2000000C: temp |?--- &temp (passed to function) |
| | Address 0x2000000C: temp |<--- &temp (passed to function) |
| | Value: 23.8 | |
| +----------------------------+ |
| |
@@ -368,11 +368,11 @@ Connect your DHT11 like this:
| Pico 2 DHT11 Sensor |
| +----------+ +----------+ |
| | | | | |
| | GPIO 4 |---------- DATA ------?| DATA | |
| | GPIO 4 |---------- DATA ------>| DATA | |
| | | | | |
| | 3.3V |---------- VCC -------?| VCC | |
| | 3.3V |---------- VCC ------->| VCC | |
| | | | | |
| | GND |---------- GND -------?| GND | |
| | GND |---------- GND ------->| GND | |
| | | | | |
| +----------+ +----------+ |
| |
@@ -435,7 +435,7 @@ int main(void) {
float hum, temp;
if (dht11_read(&hum, &temp)) {
printf("Humidity: %.1f%%, Temperature: %.1f?C\r\n", hum, temp);
printf("Humidity: %.1f%%, Temperature: %.1f C\r\n", hum, temp);
} else {
printf("DHT11 read failed\r\n");
}
@@ -768,9 +768,9 @@ The Reset_Handler typically calls three functions:
| Reset_Handler Flow (crt0.S) |
| |
| Reset_Handler: |
| 1. Call some_init() ?-- Initialize hardware |
| 2. Call main() ?-- THIS IS WHAT WE WANT! |
| 3. Call exit() ?-- Never returns |
| 1. Call some_init() <-- Initialize hardware |
| 2. Call main() <-- THIS IS WHAT WE WANT! |
| 3. Call exit() <-- Never returns |
| |
| The MIDDLE function is main! |
| |
@@ -912,7 +912,7 @@ Let's decode the bytes `cc cc cc 3d`:
4. **Calculate value:**
- Actual exponent: 123 - 127 = -4
- Mantissa value: 1.6 (approximately)
- Final value: 1.6 * 2^(-4) ? 0.1
- Final value: 1.6 * 2^(-4) ~= 0.1
### Example: Encoding -1.0f as 0xbf800000
WEEK09/WEEK09.pdf
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