Add support for building with IAR

adc/adc_console/adc_console.c

@@ -72,7 +72,7 @@ int main(void) {
                     printf("%03x\n", sample_buf[i]);
                 break;
             }
-            case 'w':
+            case 'w': {
                 printf("\nPress any key to stop wiggling\n");
                 int i = 1;
                 gpio_set_dir_all_bits(-1);
@@ -85,6 +85,7 @@ int main(void) {
                 gpio_set_dir_all_bits(0);
                 printf("Wiggling halted.\n");
                 break;
+            }
             case '\n':
             case '\r':
                 break;

adc/microphone_adc/microphone_adc.c

@@ -44,6 +44,4 @@ int main() {
         printf("%.2f\n", adc_raw * ADC_CONVERT);
         sleep_ms(10);
     }
-
-    return 0;
 }

adc/onboard_temperature/onboard_temperature.c

@@ -58,6 +58,4 @@ int main() {
 #endif
         sleep_ms(990);
     }
-
-    return 0;
 }

flash/cache_perfctr/flash_cache_perfctr.c

@@ -79,7 +79,9 @@ int main() {
     printf("Hit rate so far: %.1f%%\n", hit * 100.f / access);
 
     printf("Calculate 25th fibonacci number: %d\n", recursive_fibonacci(25));
-    printf("New hit rate after printf and fibonacci: %.1f%%\n", xip_ctrl_hw->ctr_hit * 100.f / xip_ctrl_hw->ctr_acc);
+    uint32_t ctr_hit = xip_ctrl_hw->ctr_hit;
+    uint32_t ctr_acc = xip_ctrl_hw->ctr_acc;
+    printf("New hit rate after printf and fibonacci: %.1f%%\n", ctr_hit * 100.f / ctr_acc);
 
     check_hit_miss_invalidate();
 

gpio/hello_7segment/hello_7segment.c

@@ -89,7 +89,5 @@ int main() {
         sleep_ms(250);
         gpio_clr_mask(mask);
     }
-
-    return 0;
 }
 /// \end::hello_gpio[]

gpio/hello_gpio_irq/hello_gpio_irq.c

@@ -27,8 +27,6 @@ int main() {
 
     // Wait forever
     while (1);
-
-    return 0;
 }
 
 

hello_world/serial/hello_serial.c

@@ -13,5 +13,4 @@ int main() {
         printf("Hello, world!\n");
         sleep_ms(1000);
     }
-    return 0;
 }

hello_world/usb/hello_usb.c

@@ -13,5 +13,4 @@ int main() {
         printf("Hello, world!\n");
         sleep_ms(1000);
     }
-    return 0;
 }

i2c/bmp280_i2c/bmp280_i2c.c

@@ -214,6 +214,7 @@ int main() {
 #if !defined(i2c_default) || !defined(PICO_DEFAULT_I2C_SDA_PIN) || !defined(PICO_DEFAULT_I2C_SCL_PIN)
     #warning i2c / bmp280_i2c example requires a board with I2C pins
         puts("Default I2C pins were not defined");
+    return 0;
 #else
     // useful information for picotool
     bi_decl(bi_2pins_with_func(PICO_DEFAULT_I2C_SDA_PIN, PICO_DEFAULT_I2C_SCL_PIN, GPIO_FUNC_I2C));
@@ -248,7 +249,5 @@ int main() {
         // poll every 500ms
         sleep_ms(500);
     }
-
 #endif
-    return 0;
 }

i2c/lcd_1602_i2c/lcd_1602_i2c.c

@@ -163,7 +163,5 @@ int main() {
             lcd_clear();
         }
     }
-
-    return 0;
 #endif
 }

i2c/lis3dh_i2c/lis3dh_i2c.c

@@ -122,8 +122,7 @@ int main() {
         sleep_ms(500);
 
         // Clear terminal 
-        printf("\e[1;1H\e[2J");
+        printf("%c[1;1H%c[2J", 27, 27);
     }
 #endif
-    return 0;
 }

i2c/mma8451_i2c/mma8451_i2c.c

@@ -121,7 +121,7 @@ int main() {
         sleep_ms(500);
 
         // Clear terminal 
-        printf("\e[1;1H\e[2J");
+        printf("%c[1;1H%c[2J", 27, 27);
     }
 
 #endif

i2c/mpl3115a2_i2c/mpl3115a2_i2c.c

@@ -148,12 +148,15 @@ void mpl3115a2_convert_fifo_batch(uint8_t start, volatile uint8_t buf[], struct
 
     // 3 altitude registers: MSB (8 bits), CSB (8 bits) and LSB (4 bits, starting from MSB)
     // first two are integer bits (2's complement) and LSB is fractional bits -> makes 20 bit signed integer
-    int32_t h = (int32_t) ((uint32_t) buf[start] << 24 | buf[start + 1] << 16 | buf[start + 2] << 8);
+    int32_t h = (int32_t) buf[start] << 24;
+    h |= (int32_t) buf[start + 1] << 16;
+    h |= (int32_t) buf[start + 2] << 8;
     data->altitude = ((float)h) / 65536.f;
 
     // 2 temperature registers: MSB (8 bits) and LSB (4 bits, starting from MSB)
     // first 8 are integer bits with sign and LSB is fractional bits -> 12 bit signed integer
-    int16_t t = (int16_t) (((uint16_t) buf[start + 3]) << 8 | buf[start + 4]);
+    int16_t t = (int16_t) buf[start + 3] << 8;
+    t |= (int16_t) buf[start + 4];
     data->temperature = ((float)t) / 256.f;
 }
 
@@ -162,6 +165,7 @@ int main() {
 #if !defined(i2c_default) || !defined(PICO_DEFAULT_I2C_SDA_PIN) || !defined(PICO_DEFAULT_I2C_SCL_PIN)
 #warning i2c / mpl3115a2_i2c example requires a board with I2C pins
     puts("Default I2C pins were not defined");
+    return 0;
 #else
     printf("Hello, MPL3115A2. Waiting for something to interrupt me!...\n");
 
@@ -202,5 +206,4 @@ int main() {
     };
 
 #endif
-    return 0;
 }

i2c/mpu6050_i2c/mpu6050_i2c.c

@@ -82,6 +82,7 @@ int main() {
 #if !defined(i2c_default) || !defined(PICO_DEFAULT_I2C_SDA_PIN) || !defined(PICO_DEFAULT_I2C_SCL_PIN)
     #warning i2c/mpu6050_i2c example requires a board with I2C pins
     puts("Default I2C pins were not defined");
+    return 0;
 #else
     printf("Hello, MPU6050! Reading raw data from registers...\n");
 
@@ -111,7 +112,5 @@ int main() {
 
         sleep_ms(100);
     }
-
 #endif
-    return 0;
 }

i2c/pa1010d_i2c/pa1010d_i2c.c

@@ -149,8 +149,7 @@ int main() {
         sleep_ms(1000);
 
         // Clear terminal 
-        printf("\e[1;1H\e[2J");
+        printf("%c[1;1H%c[2J", 27, 27);
     }
 #endif
-    return 0;
 }

i2c/pcf8523_i2c/pcf8523_i2c.c

@@ -156,9 +156,8 @@ int main() {
         sleep_ms(500);
 
         // Clear terminal 
-        printf("\e[1;1H\e[2J");
+        printf("%c[1;1H%c[2J", 27, 27);
     }
 #endif
-    return 0;
 }
 

interp/hello_interp/hello_interp.c

@@ -58,8 +58,11 @@ void cross_lanes() {
     interp0->base[0] = 1;
     interp0->base[1] = 0;
     puts("Lane result crossover:");
-    for (int i = 0; i < 10; ++i)
-        printf("PEEK0, POP1: %d, %d\n", interp0->peek[0], interp0->pop[1]);
+    for (int i = 0; i < 10; ++i) {
+        uint32_t peek0 = interp0->peek[0];
+        uint32_t pop1 = interp0->pop[1];
+        printf("PEEK0, POP1: %d, %d\n", peek0, pop1);
+    }
 }
 
 void simple_blend1() {
@@ -107,7 +110,7 @@ void simple_blend2() {
     interp_config_set_blend(&cfg, true);
     interp_set_config(interp0, 0, &cfg);
 
-    interp0->base[0] = -1000;
+    interp0->base[0] = (uint32_t) -1000;
     interp0->base[1] = 1000;
 
     puts("signed:");
@@ -178,8 +181,10 @@ void linear_interpolation() {
         int16_t *sample_pair = (int16_t *) interp0->peek[2];
         interp0->base[0] = sample_pair[0];
         interp0->base[1] = sample_pair[1];
-        printf("%d\t(%d%% between %d and %d)\n", (int) interp0->peek[1],
-               100 * (interp0->add_raw[1] & 0xff) / 0xff,
+        uint32_t peek1 = interp0->peek[1];
+        uint32_t add_raw1 = interp0->add_raw[1];
+        printf("%d\t(%d%% between %d and %d)\n", (int) peek1,
+               100 * (add_raw1 & 0xff) / 0xff,
                sample_pair[0], sample_pair[1]);
         interp0->add_raw[0] = step;
     }

multicore/multicore_runner_queue/multicore_runner_queue.c

@@ -13,7 +13,7 @@
 
 typedef struct
 {
-    void *func;
+    int32_t (*func)(int32_t);
     int32_t data;
 } queue_entry_t;
 
@@ -31,8 +31,7 @@ void core1_entry() {
 
         queue_remove_blocking(&call_queue, &entry);
 
-        int32_t (*func)() = (int32_t(*)())(entry.func);
-        int32_t result = (*func)(entry.data);
+        int32_t result = entry.func(entry.data);
 
         queue_add_blocking(&results_queue, &result);
     }
@@ -78,7 +77,7 @@ int main() {
 
     multicore_launch_core1(core1_entry);
 
-    queue_entry_t entry = {&factorial, TEST_NUM};
+    queue_entry_t entry = {factorial, TEST_NUM};
     queue_add_blocking(&call_queue, &entry);
 
     // We could now do a load of stuff on core 0 and get our result later
@@ -88,7 +87,7 @@ int main() {
     printf("Factorial %d is %d\n", TEST_NUM, res);
 
     // Now try a different function
-    entry.func = &fibonacci;
+    entry.func = fibonacci;
     queue_add_blocking(&call_queue, &entry);
 
     queue_remove_blocking(&results_queue, &res);

pio/apa102/apa102.c

@@ -20,6 +20,10 @@
 // Global brightness value 0->31
 #define BRIGHTNESS 16
 
+#ifndef M_PI
+#define M_PI 3.14159265358979323846
+#endif
+
 void put_start_frame(PIO pio, uint sm) {
     pio_sm_put_blocking(pio, sm, 0u);
 }
@@ -50,7 +54,7 @@ int main() {
     apa102_mini_program_init(pio, sm, offset, SERIAL_FREQ, PIN_CLK, PIN_DIN);
 
     for (int i = 0; i < TABLE_SIZE; ++i)
-        wave_table[i] = powf(sinf(i * M_PI / TABLE_SIZE), 5.f) * 255;
+        wave_table[i] = (uint8_t) (powf(sinf(i * M_PI / TABLE_SIZE), 5.f) * 255);
 
     uint t = 0;
     while (true) {

pio/i2c/i2c.pio

@@ -110,8 +110,8 @@ static inline void i2c_program_init(PIO pio, uint sm, uint offset, uint pin_sda,
 
     // Clear IRQ flag before starting, and make sure flag doesn't actually
     // assert a system-level interrupt (we're using it as a status flag)
-    pio_set_irq0_source_enabled(pio, pis_interrupt0 + sm, false);
-    pio_set_irq1_source_enabled(pio, pis_interrupt0 + sm, false);
+    pio_set_irq0_source_enabled(pio, (enum pio_interrupt_source) ((uint) pis_interrupt0 + sm), false);
+    pio_set_irq1_source_enabled(pio, (enum pio_interrupt_source) ((uint) pis_interrupt0 + sm), false);
     pio_interrupt_clear(pio, sm);
 
     // Configure and start SM

pio/i2c/pio_i2c.c

@@ -33,10 +33,14 @@ static inline void pio_i2c_put16(PIO pio, uint sm, uint16_t data) {
     while (pio_sm_is_tx_fifo_full(pio, sm))
         ;
     // some versions of GCC dislike this
+#ifdef __GNUC__
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wstrict-aliasing"
+#endif
     *(io_rw_16 *)&pio->txf[sm] = data;
+#ifdef __GNUC__
 #pragma GCC diagnostic pop
+#endif
 }
 
 
@@ -48,10 +52,14 @@ void pio_i2c_put_or_err(PIO pio, uint sm, uint16_t data) {
     if (pio_i2c_check_error(pio, sm))
         return;
     // some versions of GCC dislike this
+#ifdef __GNUC__
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wstrict-aliasing"
+#endif
     *(io_rw_16 *)&pio->txf[sm] = data;
+#ifdef __GNUC__
 #pragma GCC diagnostic pop
+#endif
 }
 
 uint8_t pio_i2c_get(PIO pio, uint sm) {

pio/st7789_lcd/st7789_lcd.c

@@ -29,6 +29,10 @@
 
 #define SERIAL_CLK_DIV 1.f
 
+#ifndef M_PI
+#define M_PI 3.14159265358979323846
+#endif
+
 // Format: cmd length (including cmd byte), post delay in units of 5 ms, then cmd payload
 // Note the delays have been shortened a little
 static const uint8_t st7789_init_seq[] = {
@@ -129,8 +133,8 @@ int main() {
         if (theta > theta_max)
             theta -= theta_max;
         int32_t rotate[4] = {
-                cosf(theta) * (1 << UNIT_LSB), -sinf(theta) * (1 << UNIT_LSB),
-                sinf(theta) * (1 << UNIT_LSB), cosf(theta) * (1 << UNIT_LSB)
+                (int32_t) (cosf(theta) * (1 << UNIT_LSB)), (int32_t) (-sinf(theta) * (1 << UNIT_LSB)),
+                (int32_t) (sinf(theta) * (1 << UNIT_LSB)), (int32_t) (cosf(theta) * (1 << UNIT_LSB))
         };
         interp0->base[0] = rotate[0];
         interp0->base[1] = rotate[2];

pwm/measure_duty_cycle/measure_duty_cycle.c

@@ -64,7 +64,7 @@ int main() {
     // values should be very close!
     for (int i = 0; i < count_of(test_duty_cycles); ++i) {
         float output_duty_cycle = test_duty_cycles[i];
-        pwm_set_gpio_level(OUTPUT_PIN, output_duty_cycle * (count_top + 1));
+        pwm_set_gpio_level(OUTPUT_PIN, (uint16_t) (output_duty_cycle * (count_top + 1)));
         float measured_duty_cycle = measure_duty_cycle(MEASURE_PIN);
         printf("Output duty cycle = %.1f%%, measured input duty cycle = %.1f%%\n",
                output_duty_cycle * 100.f, measured_duty_cycle * 100.f);

rtc/hello_rtc/hello_rtc.c

@@ -43,7 +43,5 @@ int main() {
         printf("\r%s      ", datetime_str);
         sleep_ms(100);
     }
-
-    return 0;
 }
 /// \end::hello_rtc_main[]

rtc/rtc_alarm_repeat/rtc_alarm_repeat.c

@@ -56,6 +56,4 @@ int main() {
 
     // Alarm will keep firing forever
     while(1);
-
-    return 0;
 }

spi/bme280_spi/bme280_spi.c

@@ -235,7 +235,5 @@ int main() {
 
         sleep_ms(1000);
     }
-
-    return 0;
 #endif
 }

spi/max7219_32x8_spi/max7219_32x8_spi.c

@@ -55,15 +55,6 @@ static inline void cs_deselect() {
 #endif
 
 #if defined(spi_default) && defined(PICO_DEFAULT_SPI_CSN_PIN)
-static void write_register(uint8_t reg, uint8_t data) {
-    uint8_t buf[2];
-    buf[0] = reg;
-    buf[1] = data;
-    cs_select();
-    spi_write_blocking(spi_default, buf, 2);
-    cs_deselect();
-    sleep_ms(1);
-}
 
 static void write_register_all(uint8_t reg, uint8_t data) {
     uint8_t buf[2];
@@ -135,7 +126,5 @@ int main() {
 
         bright++;
     }
-
-    return 0;
 #endif
 }