MindSDK_MM32F5270/demo_apps/cmsis-dsp/arm_sin_cos_example

hello_world

实验过程

• 板子初始化。
• 打印“cos & sin basic examples”。
• 计算数据buffer的cos(x) & sin(x)，参考和测试的误差，并打印。
• 用户通过串口向设备发送任意字符，设备通过串口返回用户发送的字符。

实验结果

用户定义的待计算的x数组

testInput_f32[MAX_BLOCKSIZE] = { 1.570796326794896619, -1.244916875853235400, -4.793533929171324800, 0.360705030233248850, 0.827929644170887320, -3.299532218312426900, 3.427441903227623800, 3.422401784294607700,
0.941943896490312180, 0.502609575000365850, -0.537345278736373500, 2.088817392965764500, -1.693168684143455700, 6.283185307179590700, -0.392545884746175080, 0.327893095115825040, 3.070147440456292300, 0.170611405884662230, -0.275275082396073010, -2.395492805446796300, 0.847311163536506600, -3.845517018083148800, 2.055818378415868300, 4.672594161978930800, -1.990923030266425800, 2.469305197656249500, 3.609002606064021000, -4.586736582331667500, -4.147080139136136300, 1.643756718868359500, -1.150866392366494800, -0.108308165334010680 };

串口结果打印

cos & sin basic examples. cosOutput = 0.000000 sinOutput = 1.000000 diff = 0.000000 cosOutput = 0.320136 sinOutput = -0.947352 diff = 0.000037 cosOutput = 0.081054 sinOutput = 0.996692 diff = 0.000036 cosOutput = 0.935631 sinOutput = 0.352928 diff = 0.000036 cosOutput = 0.676389 sinOutput = 0.736519 diff = 0.000037 cosOutput = -0.987545 sinOutput = 0.157282 diff = 0.000017 cosOutput = -0.959408 sinOutput = -0.281968 diff = 0.000031 cosOutput = -0.960824 sinOutput = -0.277131 diff = 0.000016 cosOutput = 0.588209 sinOutput = 0.808692 diff = 0.000028 cosOutput = 0.876326 sinOutput = 0.481712 diff = 0.000006 cosOutput = 0.859060 sinOutput = -0.511851 diff = 0.000025 cosOutput = -0.495156 sinOutput = 0.868790 diff = 0.000025 cosOutput = -0.122067 sinOutput = -0.992520 diff = 0.000004 cosOutput = 1.000000 sinOutput = 0.000000 diff = 0.000000 cosOutput = 0.923937 sinOutput = -0.382542 diff = 0.000002 cosOutput = 0.946709 sinOutput = 0.322044 diff = 0.000030 cosOutput = -0.997438 sinOutput = 0.071384 diff = 0.000022 cosOutput = 0.985475 sinOutput = 0.169784 diff = 0.000013 cosOutput = 0.962333 sinOutput = -0.271807 diff = 0.000037 cosOutput = -0.734333 sinOutput = -0.678772 diff = 0.000024 cosOutput = 0.661999 sinOutput = 0.749501 diff = 0.000006 cosOutput = -0.762295 sinOutput = 0.647203 diff = 0.000035 cosOutput = -0.466219 sinOutput = 0.884648 diff = 0.000038 cosOutput = -0.039784 sinOutput = -0.999194 diff = 0.000028 cosOutput = -0.407870 sinOutput = -0.913025 diff = 0.000027 cosOutput = -0.782389 sinOutput = 0.622769 diff = 0.000026 cosOutput = -0.892733 sinOutput = -0.450573 diff = 0.000012 cosOutput = -0.125320 sinOutput = 0.992103 diff = 0.000027 cosOutput = -0.535675 sinOutput = 0.844419 diff = 0.000009 cosOutput = -0.072895 sinOutput = 0.997336 diff = 0.000008 cosOutput = 0.407691 sinOutput = -0.913106 diff = 0.000026 cosOutput = 0.994130 sinOutput = -0.108095 diff = 0.000022 SUCCESS